muele-marlin/Documentation/Compilation.md

Configuring and compilation:

Install the latest non-beta arduino software IDE/toolset http://www.arduino.cc/en/Main/Software

Download the Marlin firmware https://github.com/MarlinFirmware/Marlin/tree/development

For the latest development, or

For the latest stable release

In both cases use the "Download Zip" button on the right.

For some spec. boards a spec. dir in the ArduinoAddons directory in the Marlin dir needs to be copied to the arduino environment. \hardware\

Start the arduino IDE. Select Tools -> Board -> Arduino Mega 2560 or your microcontroller Select the correct serial port in Tools ->Serial Port Open Marlin.pde or .ino

Click the Verify/Compile button

Click the Upload button If all goes well the firmware is uploading

That's ok. Enjoy Silky Smooth Printing.