• Author Author: Workshopshed
  • Date Created: Date Created
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TMC2300-IOT-REF - Remote controlled Stepper Motor - A closer look

Workshopshed

Following my problem trying to get the motor to run, I thought I'd check the board with a microscope to see if there were any issues. It all looks good an there are no obvious shorts, melted components or burns.

 

Power

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USB

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TMC2300

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ESP32

 

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  • Andy, I read that your power circuit gets hot, no matter what's connected as source or load.

    If it gets hot even when there's no motor attached, that's a real sign that things are wrong.

    These are all low power components without "prior state" memory. No component on the board can cause overheating without the motor.

    Troubleshooting should focus on finding what components are defect.

     

    The only easy test is to remove D6 and D8. If the board still gets hot, you know it's on the easy part.

    But if not, you'll have to troubleshoot the ICs downstream the diodes.

     

    The bad part is that it's most likely downstream, and those are more difficult components to troubleshoot.

    The good part is that you have the UART kit, and the downstream components can be stolen from that ...