Marlin 2.0 Guides

Marlin is an open source firmware primarily designed for RepRap project based FDM 3D-printers using the Arduino platform. This Marlin 2.0 Integration by Leandro Loiacono is modified to drive Community Robot Arm. It serves as a second firmware option to drive the robot in addition to 20sffactory Community Firmware. Software development is ongoing. Pen plotting shows promising repeatable results. 3D printing & Laser Engraving experiments to follow.

This Marlin Integration is intended for advanced users of Community Robot Arm who have used 20sffactory Firmware with parameters calibrated well in its ‘config.h’ file. Controller wiring remains identical.

Guide_Marlin.jpg

Marlin 2.0 compiling error may occur on Windows. See this tutorial for a potential solution.

Parameters Convertor

20sffactory Firmware

"config.h" Settings

SHANK_LENGTH

END_EFFECTOR_OFFSET

STEPS_PER_REVO

MICROSTEPS

MOTOR_GEAR_TEETH

MAIN_GEAR_TEETH

X_HOME_STEPS

Y_HOME_STEPS

Z_HOME_STEPS

Marlin 2.0

"Configuration.h" Settings

ROBOT_ARM_2L

_LOW_SHANK

_HIGH_SHANK

_EE_OFFSET

_X_AT_ENDSTOP

_Y_AT_ENDSTOP

_Z_AT_ENDSTOP

DEFAULT_AXIS_STEPS_PER_UNIT

Pen Plotting Guides

Marlin 2.0 integration to Robot Arm enables the function of pen plotting. The below guides provide methods to use Inkscape to generate gcode file from an image and to use Pronterface in gcode execution for the robot to complete pen plotting.

Board cooling fan does not turn on automatically in current Marlin version. User must send command ‘M106 S255’ via host program to activate cooling fan to avoid overheating in motor drivers.