I have a problem with one of my Raps128.

3D Printing
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1

I have a problem with one of my Raps128. It only works on slow decay mode what’s wrong?

2

Trim pot broken?

3

More context would really help…

4

Decay voltages do change but when it goes from slow decay to mixed steppers stop running. I still can hear low humming noise from steppers.

5

It’s just one driver? I would throw it away and not waste any time trying to troubleshoot. They don’t cost enough to be worth hours of poking at it with an oscilloscope.

6

Yeah i know i just like to poke around Android do some debuging

7

I get 2 TMC2100 just to test them. TMC2100 don’t have as much power but it is half the price of one RAPS128.

8

2100’s are lower max current but are usually really high torque in spreadcycle.

9

is it any good . What about temps