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Twitching E axis motor

Posted by davros 
Twitching E axis motor
June 15, 2014 03:33PM
I have almost finished a Prusa type machine. Running Sprinter on a Ramps V1.4 board. All is very well, X, Y & Z axis calibrating nicely; hot end and thermistor working correctly. The only problem was that the E axis motor made quite a lod noise and vibrated quite a bit when powered. It turned out the the wiring was incorrect. With the wiring fixed the motor just twitches when powered. I have swapped it out with the X axis and the motor runs fine, X twitches when run on E stepper driver. Swapping the drivers made no difference. Changing firmware and Printerface settings made no difference.

How do I remap the Ramps board to use the second extruder motor control?

Many Thanks
Re: Twitching E axis motor
June 16, 2014 06:27AM
Re: Twitching E axis motor
June 16, 2014 12:17PM
Thanks for the reply. Would you know how to change pin mappings?

Re: Twitching E axis motor
June 16, 2014 01:17PM
Worked out the pin.h. made no difference. However I removed the 3 jumpers from below the driver board and wecare off, working well.
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