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makerbase-mks / MKS-SERVO42C

MKS SERVO42C, an upgraded version of MKS SERVO42B, built-in Field-Oriented control algorithm, position/speed/ torque closed-loop, 4 Half bridge driver with 8 MOSFET, it makes the motor quieter, lower vibration and Lower calorific.
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Schematic of control interface #19

Closed uboatsalamander closed 2 years ago

uboatsalamander commented 2 years ago

Greetings, first of all great job with this new 42C version. HW wise looks pretty good.

Would it be possible to release the schematic and if not the full schematic then at least the input part with the mosfet level shifters? I have compared it with servo 42B and it looks similar, but I am not 100% sure. I just apparently destroyed one Wemos D1 R32 board by connecting the S42C via CNCv3 shield. The 10k pullup on EN pin connected to GPIO12 on D1 R32 apparently set wrong flash voltage during D1 R32 boot. Even leaving the COM pin of S42C floating is not safe as the Dir and Stp pins are still connected to EN pin via their 10k pullups.

So I need to mod it to prevent the issues. Seeing the exact circuitry around the inputs of S42C will prevent further surprises.

Thanks

uboatsalamander commented 2 years ago

Thank you very much, I thought you missed my request but now I noticed the schematic was added two day ago. Perfect! https://github.com/makerbase-mks/MKS-SERVO42C/blob/main/Hardware/MKS%20SERVO42C%20V1.00/MKS%20SERVO42C%20V1.0schematic.pdf