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Finally it's done.

To duplicate the ports of z and y motor used DuoWeiSi expansion boards made simple Y cables to get enable, diretion, step and 5 volts from rumba, and seperate power suply for...

Changed power supply with 50A, and it worked fine until Rumba stopped talking with pc

I have made a conected two DRV8825 to the normal zport on the board and another two to e3 port (made a a pin to pin conections)

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Hi
Just finished building my new printer.
Its seams ok when testing and adjusting single axels, but when working all together it starts to fai some random motor,
I'm using...