[2.0.x] Enhancements to FILAMENT_RUNOUT_SENSOR (#12069)

- Added FILAMENT_RUNOUT_DISTANCE_MM option
- Added FILAMENT_MOTION_SENSOR option

Marlin/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/default/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/AlephObjects/TAZ4/Configuration.h

@@ -1006,6 +1006,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/AliExpress/CL-260/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Anet/A2/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Anet/A2plus/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Anet/A6/Configuration.h

@@ -1101,6 +1101,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Anet/A8/Configuration.h

@@ -993,6 +993,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Azteeg/X5GT/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/BIBO/TouchX/cyclops/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/BIBO/TouchX/default/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/BQ/Hephestos/Configuration.h

@@ -974,6 +974,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/BQ/Hephestos_2/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/BQ/WITBOX/Configuration.h

@@ -974,6 +974,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Cartesio/Configuration.h

@@ -985,6 +985,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Creality/CR-10/Configuration.h

@@ -996,6 +996,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Creality/CR-10S/Configuration.h

@@ -991,6 +991,18 @@
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
   #define FIL_RUNOUT_PIN 2 // Creality CR10-S stock sensor
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Creality/CR-10mini/Configuration.h

@@ -1005,6 +1005,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Creality/CR-8/Configuration.h

@@ -996,6 +996,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Creality/Ender-2/Configuration.h

@@ -990,6 +990,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Creality/Ender-3/Configuration.h

@@ -990,6 +990,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Creality/Ender-4/Configuration.h

@@ -996,6 +996,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Einstart-S/Configuration.h

@@ -996,6 +996,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Felix/Configuration.h

@@ -968,6 +968,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Felix/DUAL/Configuration.h

@@ -968,6 +968,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/FolgerTech/i3-2020/Configuration.h

@@ -992,6 +992,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Formbot/Raptor/Configuration.h

@@ -1085,6 +1085,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Formbot/T_Rex_2+/Configuration.h

@@ -1028,6 +1028,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Formbot/T_Rex_3/Configuration.h

@@ -1016,6 +1016,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Geeetech/GT2560/Configuration.h

@@ -1001,6 +1001,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Geeetech/I3_Pro_X-GT2560/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Geeetech/MeCreator2/Configuration.h

@@ -993,6 +993,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Geeetech/Prusa i3 Pro B/bltouch/Configuration.h

@@ -1002,6 +1002,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Geeetech/Prusa i3 Pro B/noprobe/Configuration.h

@@ -1001,6 +1001,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Geeetech/Prusa i3 Pro C/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Geeetech/Prusa i3 Pro W/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Infitary/i3-M508/Configuration.h

@@ -990,6 +990,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/JGAurora/A5/Configuration.h

@@ -998,6 +998,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/MakerParts/Configuration.h

@@ -1006,6 +1006,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Malyan/M150/Configuration.h

@@ -1010,6 +1010,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Malyan/M200/Configuration.h

@@ -985,6 +985,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Micromake/C1/basic/Configuration.h

@@ -990,6 +990,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Micromake/C1/enhanced/Configuration.h

@@ -990,6 +990,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Mks/Sbase/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/RepRapPro/Huxley/Configuration.h

@@ -1035,6 +1035,18 @@ Black rubber belt(MXL), 18 - tooth aluminium pulley : 87.489 step per mm (Huxley
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/RepRapWorld/Megatronics/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/RigidBot/Configuration.h

@@ -984,6 +984,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/SCARA/Configuration.h

@@ -999,6 +999,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/STM32F10/Configuration.h

@@ -988,6 +988,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/STM32F4/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Sanguinololu/Configuration.h

@@ -1017,6 +1017,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/TheBorg/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/TinyBoy2/Configuration.h

@@ -1042,6 +1042,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Tronxy/X1/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Tronxy/X3A/Configuration.h

@@ -990,6 +990,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Tronxy/X5S/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Tronxy/XY100/Configuration.h

@@ -997,6 +997,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/UltiMachine/Archim2/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Velleman/K8200/Configuration.h

@@ -1016,6 +1016,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Velleman/K8400/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Velleman/K8400/Dual-head/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/Wanhao/Duplicator 6/Configuration.h

@@ -996,6 +996,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/adafruit/ST7565/Configuration.h

@@ -986,6 +986,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/delta/Anycubic/Kossel/Configuration.h

@@ -1177,6 +1177,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/delta/FLSUN/auto_calibrate/Configuration.h

@@ -1114,6 +1114,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/delta/FLSUN/kossel/Configuration.h

@@ -1113,6 +1113,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/delta/FLSUN/kossel_mini/Configuration.h

@@ -1113,6 +1113,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/delta/Hatchbox_Alpha/Configuration.h

@@ -1116,6 +1116,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/delta/generic/Configuration.h

@@ -1101,6 +1101,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/delta/kossel_mini/Configuration.h

@@ -1103,6 +1103,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/delta/kossel_pro/Configuration.h

@@ -1104,6 +1104,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/delta/kossel_xl/Configuration.h

@@ -1104,6 +1104,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/gCreate/gMax1.5+/Configuration.h

@@ -1000,6 +1000,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/makibox/Configuration.h

@@ -989,6 +989,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/stm32f103ret6/Configuration.h

@@ -988,6 +988,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/tvrrug/Round2/Configuration.h

@@ -981,6 +981,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/config/examples/wt150/Configuration.h

@@ -991,6 +991,18 @@
   #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
   //#define FIL_RUNOUT_PULLDOWN      // Use internal pulldown for filament runout pins.
   #define FILAMENT_RUNOUT_SCRIPT "M600"
+
+  // After a runout is detected, continue printing this length of filament
+  // before executing the runout script. Useful for a sensor at the end of
+  // a feed tube. Requires 4 bytes SRAM per sensor, plus 4 bytes overhead.
+  //#define FILAMENT_RUNOUT_DISTANCE_MM 25
+
+  #ifdef FILAMENT_RUNOUT_DISTANCE_MM
+    // Enable this option to use an encoder disc that toggles the runout pin
+    // as the filament moves. (Be sure to set FILAMENT_RUNOUT_DISTANCE_MM
+    // large enough to avoid false positives.)
+    //#define FILAMENT_MOTION_SENSOR
+  #endif
 #endif
 
 //===========================================================================

Marlin/src/feature/runout.cpp

@@ -32,36 +32,21 @@
 
 FilamentRunoutSensor runout;
 
-bool FilamentRunoutSensor::enabled = true,
+bool FilamentSensorBase::enabled = true,
-     FilamentRunoutSensor::filament_ran_out; // = false
+     FilamentSensorBase::filament_ran_out; // = false
-uint8_t FilamentRunoutSensor::runout_count; // = 0
 
-void FilamentRunoutSensor::setup() {
+void FilamentSensorTypeBase::filament_present(const uint8_t extruder) {
-
+  runout.filament_present(extruder);
-  #if ENABLED(FIL_RUNOUT_PULLUP)
-    #define INIT_RUNOUT_PIN(P) SET_INPUT_PULLUP(P)
-  #elif ENABLED(FIL_RUNOUT_PULLDOWN)
-    #define INIT_RUNOUT_PIN(P) SET_INPUT_PULLDOWN(P)
-  #else
-    #define INIT_RUNOUT_PIN(P) SET_INPUT(P)
-  #endif
-
-  INIT_RUNOUT_PIN(FIL_RUNOUT_PIN);
-  #if NUM_RUNOUT_SENSORS > 1
-    INIT_RUNOUT_PIN(FIL_RUNOUT2_PIN);
-    #if NUM_RUNOUT_SENSORS > 2
-      INIT_RUNOUT_PIN(FIL_RUNOUT3_PIN);
-      #if NUM_RUNOUT_SENSORS > 3
-        INIT_RUNOUT_PIN(FIL_RUNOUT4_PIN);
-        #if NUM_RUNOUT_SENSORS > 4
-          INIT_RUNOUT_PIN(FIL_RUNOUT5_PIN);
-          #if NUM_RUNOUT_SENSORS > 5
-            INIT_RUNOUT_PIN(FIL_RUNOUT6_PIN);
-          #endif
-        #endif
-      #endif
-    #endif
-  #endif
 }
 
+uint8_t FilamentSensorTypeEncoder::motion_detected,
+        FilamentSensorTypeEncoder::old_state; // = 0
+
+#if FILAMENT_RUNOUT_DISTANCE_MM > 0
+  float RunoutResponseDelayed::runout_distance_mm = FILAMENT_RUNOUT_DISTANCE_MM;
+  int32_t RunoutResponseDelayed::steps_since_detection[EXTRUDERS];
+#else
+  uint8_t RunoutResponseDebounced::runout_count; // = 0
+#endif
+
 #endif // FILAMENT_RUNOUT_SENSOR

Marlin/src/feature/runout.h

@@ -19,14 +19,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
+#pragma once
 
 /**
  * feature/runout.h - Runout sensor support
  */
 
-#ifndef _RUNOUT_H_
-#define _RUNOUT_H_
-
 #include "../sd/cardreader.h"
 #include "../module/printcounter.h"
 #include "../module/stepper.h"
@@ -38,20 +36,49 @@
   #include "../lcd/extensible_ui/ui_api.h"
 #endif
 
-#define FIL_RUNOUT_THRESHOLD 5
+//#define FILAMENT_RUNOUT_SENSOR_DEBUG
 
-class FilamentRunoutSensor {
+class FilamentSensorBase {
   public:
     static bool enabled;
 
-    FilamentRunoutSensor() {}
+  protected:
+    static bool filament_ran_out;
+};
 
-    static void setup();
+template<class RESPONSE_T, class SENSOR_T>
+class TFilamentSensor : public FilamentSensorBase {
+  private:
+    typedef RESPONSE_T response_t;
+    typedef SENSOR_T   sensor_t;
+    static response_t response;
+    static sensor_t   sensor;
 
-    FORCE_INLINE static void reset() { runout_count = 0; filament_ran_out = false; }
+  public:
+    static void setup() {
+      sensor.setup();
+    }
 
-    FORCE_INLINE static void run() {
+    inline static void reset() {
-      if ((IS_SD_PRINTING || print_job_timer.isRunning()) && check() && !filament_ran_out) {
+      filament_ran_out = false;
+      response.reset();
+    }
+
+    // The sensor calls this method when filament is present
+    inline static void filament_present(const uint8_t extruder) {
+      response.filament_present(extruder);
+    }
+
+    inline static void block_complete(const block_t *b) {
+      response.block_complete(b);
+      sensor.block_complete(b);
+    }
+
+    static void run() {
+      if (enabled && !filament_ran_out && (IS_SD_PRINTING || print_job_timer.isRunning())) {
+        response.run();
+        sensor.run();
+        if (response.has_runout()) {
           filament_ran_out = true;
           #if ENABLED(EXTENSIBLE_UI)
             UI::onFilamentRunout();
@@ -60,48 +87,217 @@ class FilamentRunoutSensor {
           planner.synchronize();
         }
       }
-  private:
-    static bool filament_ran_out;
-    static uint8_t runout_count;
-
-    FORCE_INLINE static bool check() {
-      if (!enabled) return false;
-      #if NUM_RUNOUT_SENSORS < 2
-        // A single sensor applying to all extruders
-        const bool is_out = READ(FIL_RUNOUT_PIN) == FIL_RUNOUT_INVERTING;
-      #else
-        // Read the sensor for the active extruder
-        bool is_out;
-        #if ENABLED(DUAL_X_CARRIAGE)
-          const bool out1 = READ(FIL_RUNOUT_PIN ) == FIL_RUNOUT_INVERTING,
-                     out2 = READ(FIL_RUNOUT2_PIN) == FIL_RUNOUT_INVERTING;
-          if (extruder_duplication_enabled)
-            is_out = out1 || out2;
-          else
-            is_out = active_extruder ? out2 : out1;
-        #else
-          switch (active_extruder) {
-            case 0: is_out = READ(FIL_RUNOUT_PIN) == FIL_RUNOUT_INVERTING; break;
-            case 1: is_out = READ(FIL_RUNOUT2_PIN) == FIL_RUNOUT_INVERTING; break;
-            #if NUM_RUNOUT_SENSORS > 2
-              case 2: is_out = READ(FIL_RUNOUT3_PIN) == FIL_RUNOUT_INVERTING; break;
-              #if NUM_RUNOUT_SENSORS > 3
-                case 3: is_out = READ(FIL_RUNOUT4_PIN) == FIL_RUNOUT_INVERTING; break;
-                #if NUM_RUNOUT_SENSORS > 4
-                  case 4: is_out = READ(FIL_RUNOUT5_PIN) == FIL_RUNOUT_INVERTING; break;
-                  #if NUM_RUNOUT_SENSORS > 5
-                    case 5: is_out = READ(FIL_RUNOUT6_PIN) == FIL_RUNOUT_INVERTING; break;
-                  #endif // > 5
-                #endif // > 4
-              #endif // > 3
-            #endif // > 2
-        }
-        #endif
-      #endif
-      return (is_out ? ++runout_count : (runout_count = 0)) > FIL_RUNOUT_THRESHOLD;
     }
 };
 
-extern FilamentRunoutSensor runout;
+/*************************** FILAMENT PRESENCE SENSORS ***************************/
 
-#endif // _RUNOUT_H_
+class FilamentSensorTypeBase {
+  protected:
+    static void filament_present(const uint8_t extruder);
+
+  public:
+    static void setup() {
+      #if ENABLED(FIL_RUNOUT_PULLUP)
+        #define INIT_RUNOUT_PIN(P) SET_INPUT_PULLUP(P)
+      #elif ENABLED(FIL_RUNOUT_PULLDOWN)
+        #define INIT_RUNOUT_PIN(P) SET_INPUT_PULLDOWN(P)
+      #else
+        #define INIT_RUNOUT_PIN(P) SET_INPUT(P)
+      #endif
+
+      INIT_RUNOUT_PIN(FIL_RUNOUT_PIN);
+      #if NUM_RUNOUT_SENSORS > 1
+        INIT_RUNOUT_PIN(FIL_RUNOUT2_PIN);
+        #if NUM_RUNOUT_SENSORS > 2
+          INIT_RUNOUT_PIN(FIL_RUNOUT3_PIN);
+          #if NUM_RUNOUT_SENSORS > 3
+            INIT_RUNOUT_PIN(FIL_RUNOUT4_PIN);
+            #if NUM_RUNOUT_SENSORS > 4
+              INIT_RUNOUT_PIN(FIL_RUNOUT5_PIN);
+              #if NUM_RUNOUT_SENSORS > 5
+                INIT_RUNOUT_PIN(FIL_RUNOUT6_PIN);
+              #endif
+            #endif
+          #endif
+        #endif
+      #endif
+    }
+
+    #if FIL_RUNOUT_INVERTING
+      #define FIL_RUNOUT_INVERT_MASK (_BV(NUM_RUNOUT_SENSORS) - 1)
+    #else
+      #define FIL_RUNOUT_INVERT_MASK 0
+    #endif
+
+    // Return a bitmask of all runout sensor states
+    static uint8_t poll_runout_pins() {
+      return (
+        (READ(FIL_RUNOUT_PIN ) ? _BV(0) : 0)
+        #if NUM_RUNOUT_SENSORS > 1
+          | (READ(FIL_RUNOUT2_PIN) ? _BV(1) : 0)
+          #if NUM_RUNOUT_SENSORS > 2
+            | (READ(FIL_RUNOUT3_PIN) ? _BV(2) : 0)
+            #if NUM_RUNOUT_SENSORS > 3
+              | (READ(FIL_RUNOUT4_PIN) ? _BV(3) : 0)
+              #if NUM_RUNOUT_SENSORS > 4
+                | (READ(FIL_RUNOUT5_PIN) ? _BV(4) : 0)
+                #if NUM_RUNOUT_SENSORS > 5
+                  | (READ(FIL_RUNOUT6_PIN) ? _BV(5) : 0)
+                #endif
+              #endif
+            #endif
+          #endif
+        #endif
+      ) ^ FIL_RUNOUT_INVERT_MASK;
+    }
+};
+
+/**
+ * This sensor is a simple endstop
+ * switch in the path of the filament. It detects
+ * filament runout, but not stripouts or jams.
+ */
+
+class FilamentSensorTypeSwitch : public FilamentSensorTypeBase {
+  private:
+    static bool poll_runout_pin(const uint8_t extruder) {
+      const uint8_t runout_bits = poll_runout_pins();
+      #if NUM_RUNOUT_SENSORS == 1
+        return runout_bits;                     // A single sensor applying to all extruders
+      #else
+        #if ENABLED(DUAL_X_CARRIAGE)
+          if (extruder_duplication_enabled)
+            return runout_bits;                 // Any extruder
+          else
+        #endif
+            return TEST(runout_bits, extruder); // Specific extruder
+      #endif
+    }
+
+  public:
+    FORCE_INLINE static void block_complete(const block_t *b) {}
+
+    FORCE_INLINE static void run() {
+      if (!poll_runout_pin(active_extruder))
+        filament_present(active_extruder);
+    }
+};
+
+// This filament sensor uses a magnetic encoder disc and a hall
+// effect sensor (or a slitted disc and an optical sensor). The state
+// will toggle between 0 and 1 with filament movement. It can detect
+// filament runout and stripouts or jams.
+
+class FilamentSensorTypeEncoder : public FilamentSensorTypeBase {
+  private:
+    static uint8_t motion_detected, old_state;
+
+    static void poll_motion_sensor() {
+      const uint8_t new_state = poll_runout_pins(),
+                    change    = old_state ^ new_state;
+      old_state = new_state;
+
+      #ifdef FILAMENT_RUNOUT_SENSOR_DEBUG
+        if (change) SERIAL_PROTOCOLLNPAIR("motion detected: ", change);
+      #endif
+
+      motion_detected |= change;
+    }
+
+  public:
+    static void block_complete(const block_t *b) {
+      // If the just-executed block caused the sensor wheel
+      // to turn, reset the runout counter for that extruder.
+      if (TEST(motion_detected, b->extruder))
+        filament_present(b->extruder);
+
+      // Clear motion triggers for next block
+      motion_detected = 0;
+    }
+
+    FORCE_INLINE static void run() { poll_motion_sensor(); }
+};
+
+/********************************* RESPONSE TYPE *********************************/
+
+#if FILAMENT_RUNOUT_DISTANCE_MM > 0
+
+  // The RunoutResponseDelayed will trigger an runout event only after
+  // RUNOUT_DISTANCE_MM of filament have been fed after a runout condition.
+  class RunoutResponseDelayed {
+    private:
+      static int32_t steps_since_detection[EXTRUDERS];
+
+      static float get_mm_since_runout(const uint8_t extruder) {
+        return (steps_since_detection[extruder] / planner.settings.axis_steps_per_mm[E_AXIS_N(extruder)]);
+      }
+
+    public:
+      static float runout_distance_mm;
+
+      FORCE_INLINE static bool has_runout() {
+        return get_mm_since_runout(active_extruder) > runout_distance_mm;
+      }
+
+      static inline void filament_present(const uint8_t extruder) {
+        steps_since_detection[extruder] = 0;
+      }
+
+      static inline void run() {
+        #ifdef FILAMENT_RUNOUT_SENSOR_DEBUG
+          static uint16_t r = 0;
+          if ((r++ % 24000) == 0) {
+            SERIAL_PROTOCOLPGM("mm since filament detection: ");
+            LOOP_L_N(i, NUM_RUNOUT_SENSORS) {
+              if (i > 0) SERIAL_PROTOCOLPGM(", ");
+              SERIAL_PROTOCOL(get_mm_since_runout(i));
+            }
+            SERIAL_EOL();
+          }
+        #endif
+      }
+
+      static void reset() {
+        LOOP_L_N(i, NUM_RUNOUT_SENSORS) steps_since_detection[i] = 0;
+      }
+
+      static inline void block_complete(const block_t *b) {
+        steps_since_detection[b->extruder] += TEST(b->direction_bits, E_AXIS) ? -b->steps[E_AXIS] : b->steps[E_AXIS];
+      }
+  };
+
+#else // !FILAMENT_RUNOUT_DISTANCE_MM
+
+  // The RunoutResponseDebounced will trigger an runout event after
+  // a runout condition is detected FIL_RUNOUT_THRESHOLD times in a row.
+
+  class RunoutResponseDebounced {
+    private:
+      static constexpr uint8_t FIL_RUNOUT_THRESHOLD = 5;
+      static uint8_t runout_count;
+    public:
+      FORCE_INLINE static bool has_runout()                             { return runout_count > FIL_RUNOUT_THRESHOLD; }
+      FORCE_INLINE static void block_complete(const block_t *b)         {}
+      FORCE_INLINE static void filament_present(const uint8_t extruder) { runout_count = 0; UNUSED(extruder); }
+      FORCE_INLINE static void run()                                    { runout_count++; }
+      FORCE_INLINE static void reset()                                  { runout_count = 0; }
+  };
+
+#endif // !FILAMENT_RUNOUT_DISTANCE_MM
+
+/********************************* TEMPLATE SPECIALIZATION *********************************/
+
+typedef TFilamentSensor<
+  #if FILAMENT_RUNOUT_DISTANCE_MM > 0
+    #if ENABLED(FILAMENT_MOTION_SENSOR)
+      RunoutResponseDelayed, FilamentSensorTypeEncoder
+    #else
+      RunoutResponseDelayed, FilamentSensorTypeSwitch
+    #endif
+  #else
+    RunoutResponseDebounced, FilamentSensorTypeSwitch
+  #endif
+> FilamentRunoutSensor;
+
+extern FilamentRunoutSensor runout;

Marlin/src/lcd/extensible_ui/ui_api.cpp

@@ -53,6 +53,10 @@
   #endif
 #endif
 
+#if ENABLED(FILAMENT_RUNOUT_SENSOR)
+  #include "../../feature/runout.h"
+#endif
+
 inline float clamp(const float value, const float minimum, const float maximum) {
   return MAX(MIN(value, maximum), minimum);
 }
@@ -209,6 +213,21 @@ namespace UI {
     }
   }
 
+  #if ENABLED(FILAMENT_RUNOUT_SENSOR)
+    bool isFilamentRunoutEnabled()              { return runout.enabled; }
+    void toggleFilamentRunout(const bool state) { runout.enabled = state; }
+
+    #if FILAMENT_RUNOUT_DISTANCE_MM > 0
+      float getFilamentRunoutDistance_mm() {
+        return RunoutResponseDelayed::runout_distance_mm;
+      }
+
+      void setFilamentRunoutDistance_mm(const float distance) {
+        RunoutResponseDelayed::runout_distance_mm = clamp(distance, 0, 999);
+      }
+    #endif
+  #endif
+
   #if ENABLED(LIN_ADVANCE)
     float getLinearAdvance_mm_mm_s(const uint8_t extruder) {
       return (extruder < EXTRUDERS) ? planner.extruder_advance_K[extruder] : 0;

Marlin/src/lcd/extensible_ui/ui_api.h

@@ -109,6 +109,16 @@ namespace UI {
     #endif
   #endif
 
+  #if ENABLED(FILAMENT_RUNOUT_SENSOR)
+    bool isFilamentRunoutEnabled();
+    void toggleFilamentRunout(const bool state);
+
+    #if FILAMENT_RUNOUT_DISTANCE_MM > 0
+      float getFilamentRunoutDistance_mm();
+      void setFilamentRunoutDistance_mm(const float distance);
+    #endif
+  #endif
+
   void delay_ms(unsigned long ms);
   void yield(); // Within lengthy loop, call this periodically
 

Marlin/src/module/planner.h

@@ -83,7 +83,7 @@ enum BlockFlag : char {
  * The "nominal" values are as-specified by gcode, and
  * may never actually be reached due to acceleration limits.
  */
-typedef struct {
+typedef struct block_t {
 
   volatile uint8_t flag;                    // Block flags (See BlockFlag enum above) - Modified by ISR and main thread!
 
@@ -109,6 +109,8 @@ typedef struct {
 
   #if EXTRUDERS > 1
     uint8_t extruder;                       // The extruder to move (if E move)
+  #else
+    static constexpr uint8_t extruder = 0;
   #endif
 
   #if ENABLED(MIXING_EXTRUDER)

Marlin/src/module/stepper.cpp

@@ -109,6 +109,10 @@
 
 Stepper stepper; // Singleton
 
+#if FILAMENT_RUNOUT_DISTANCE_MM > 0
+  #include "../feature/runout.h"
+#endif
+
 // public:
 
 #if ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS
@@ -1473,6 +1477,9 @@ uint32_t Stepper::stepper_block_phase_isr() {
 
     // If current block is finished, reset pointer
     if (step_events_completed >= step_event_count) {
+      #if FILAMENT_RUNOUT_DISTANCE_MM > 0
+        runout.block_complete(current_block);
+      #endif
       axis_did_move = 0;
       current_block = NULL;
       planner.discard_current_block();

buildroot/share/tests/megaatmega2560_tests

@@ -32,7 +32,7 @@ opt_set GRID_MAX_POINTS_X 16
 opt_enable PIDTEMPBED FIX_MOUNTED_PROBE Z_SAFE_HOMING \
            REPRAP_DISCOUNT_SMART_CONTROLLER SDSUPPORT EEPROM_SETTINGS PINS_DEBUGGING \
            BLINKM PCA9632 RGB_LED NEOPIXEL_LED AUTO_POWER_CONTROL \
-           NOZZLE_PARK_FEATURE FILAMENT_RUNOUT_SENSOR \
+           NOZZLE_PARK_FEATURE FILAMENT_RUNOUT_SENSOR FILAMENT_RUNOUT_DISTANCE_MM \
            AUTO_BED_LEVELING_LINEAR Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \
            SKEW_CORRECTION SKEW_CORRECTION_FOR_Z SKEW_CORRECTION_GCODE
 opt_enable_adv FWRETRACT ARC_P_CIRCLES ADVANCED_PAUSE_FEATURE CNC_WORKSPACE_PLANES CNC_COORDINATE_SYSTEMS \