<p>Like many people, I have burnt the pins in the micro-controller connected to the E0 motor - the E0 motor is not working anymore and I need to print tomorrow! I need to control the extruder motor with the working E1 pins. How do I change this in firmware? </p>

<p>I tried to change to the pins in `pins_RAMPS.h" but it was a complete fail, the motors that i tried to change didn't move. </p>

<p>I have a Arduino Mega + Ramps 1.3 in "Extruder Fan Bed" configuration, I use Repetier-Host as host and Marlin as firmware. </p>

[{'answer_id': 3172, 'author': 'Mikhail Z', 'author_id': 3839, 'author_profile': 'https://3dprinting.stackexchange.com/users/3839', 'pm_score': 2, 'selected': False, 'text': '<p>As a quick and dirty solution you may try to enable two extruders in configuration file, re-upload firmware, and then edit your GCODE file to replace all E0 references with E1.</p>\n'}, {'answer_id': 3183, 'author': 'Thomas S.', 'author_id': 5223, 'author_profile': 'https://3dprinting.stackexchange.com/users/5223', 'pm_score': 3, 'selected': False, 'text': '<p>I would change the pin assignments by swapping E0 and E1 in <code>pins_RAMPS.h</code>.</p>\n'}]
['https://3dprinting.stackexchange.com/questions/3167', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/3791/']