Friday, July 5, 2013

Pololu stepper driver board A4988 rev1

Stepper motor dravers, that my Arduini runs trough RAMPS is Pololu A4988 chib based.

I have 5 of them...
Stepper driver board information about my drivers I founr HERE
This is modifications of original board. One of resistors was changed on resistor which I can adjust to change motor current. But in general it's the same.

This is wiring diagram


And jumper settings (jumpers are on RAMPS board).

Want to say that this board must be installed in RAMPS this way
BUT NEVER THIS WAY!!!

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