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stepper driver outputs

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my controller uses A3979 driver chips, set to x and z - 1.4A, y and a - 1.8A by resistors. it uses 30v supply and drives nema 17s.

I would like more torque?
I want to extend the y from 840mm to 1000mm to allow vertical milling and a rotating axis.

I like the c-beam designs, and the all in one linear actuators, with cbeam, lead screw, plates and nema 23s. I would like to go that route when upgrading.

My thought; the a axis is an optional driver. Its connector can drive two larger current...

stepper driver outputs

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