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Question Need help troubleshooting OSW problems with VSD-E , STM32F4 Discovery board and small Mige

Discussion in 'Direct Drive Wheels' started by Psit, Feb 22, 2025 at 22:26.

  1. Psit

    Psit New Member

    Joined:
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    Hello people. I am running a old version of OSW with the VSD-E, small Mige motor and the STM32F4 Discovery board and seperate power supply. It has served me great for a long time but after a long pause in simracing because of real life stuff i tried to use it again and realized the discovery board was not responding, so i flashed it again with the mmos firmware.

    During the setup where i tried to set the motor center offset as per usual by clicking the checkbox on the mmos interface, i powered down the whole system, vsde - motor - discovery board. After powering it on again its supposed to have a blue blinking light where u need to move the wheel to the center in order for the board to initialize. I move the wheel, the led turns off as per normal. If i move the wheel to the left by about 45 degrees, the wheel starts spinning like crazy and never stops.

    I tried wiping the STM32F4 Discovery board chip and this stops happening. So i bought a new STM32F4 board because i thought there was something wrong with it, but nothing changed, still the same.

    I also tried flashing it with the VNM simulation firmware, still the same result. (when i click calibrate, the motor starts spinning and never stops)

    Anyone got any ideas on what may be failing here? I have double checked all cables and connections to make sure everything is OK, so i think its either something with the motor (encoder perhaps? do they even fail?) or the VSD-E.

    I connected to the VSD-E via the GDTool and i ran the step response test. It completed the test, the wheel actually STOPPED after the test and didnt start spinning wildly. BUT i can see it spun for only half turn, the message bellow counted 4 magnetic poles (mige has 8 , the CPR suggests it is 5000, but for this motor its 2500.

    If any old schoolers are still around i would appreciate some help!
    Psit, Feb 22, 2025 at 22:26
    #1