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Hello

Small update after measuring again the boards witht the scope.
Sometime the step pulse was comming during directional signall change. working somehow but not for sure.

After deselecing...

Hello

Usually when changing direction the rising edge is too slow and the motors make some steps in the wrong direction.

See attached pictures:

with R8 2.2kohm resistor in collector in...

Hello

I have a homemade machine with usable area 400x170x100 mm made of Al with 3 Vexta C7163-9212K motors rewound to 1.2 ohm and 3.2mH. The wire is 0.8mm (not sure anymore, can be 1mm)
The...