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LED not Working

2025-03-22
2025-04-24
  • JOAQUIN CULIAÑEZ GOMEZ

    Hi,

    Finally I have my rotator fully working but with a small problem.

    I use a DRV8825 with a NEMA 14 working fine with PCB Gerber.

    The only problem is the board fries my LEDs as soon as it start the power.

    With a tester I measured 11.53 volts.

    Tryed different LED lights with same result, they are fried.

    Any help?

    Finally in the PCB there is a second interruptor which doesn't seem to do anything, conector J1 "PRG SW",

    Is that all right?

    Best regards,

    Joaquin.

    P.S. I am trying to make a 3d design for the mechanical part that I will share if goes fine. Newbe with fusion 360.

     
  • JOAQUIN CULIAÑEZ GOMEZ

    Ok,

    I found out the problem: the light led I was using was meant to be used for a lower voltage.

    So by now everything is working fine, except the J1 PRG Switch but I think I will leave this without using it.

    I am finishing a 3D design I will share as soon as I have everything ready.

    Best regards,

    Joaquin.

     
  • brownrb

    brownrb - 2025-04-24

    J1 PRG Switch

    This is a circuit that prevents an upload of the firmware, when switch is closed.
    When open, the controller can be uploaded with new or changed firmware

    Regards
    Robert

     

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