Moving M500 to 250mm vehicle

  • Hello! I moved the M500 over to a working 250mm platform. I moved over the voltage regulator that powers the voxl board we well, but the motors, esc's and power distribution are from the 250.

    Upon a first flight test, the drone is pretty erratic. It will fly and respond to controls, but it's acting like it needs a esc calibration. I followed these steps for calibration (using USB) but don't see any difference in performance. Any suggestions?

  • Dev Team

    Hi @kiprock ,

    You will likely need to re-tune the controller settings for the smaller frame. I'm still a newbie with this process..... But I did the same thing moving a Flight Deck like setup to a smaller frame. For me, it was a lot of guess and check until things were flyable.

    The screens in QGC are here:

  • Thanks. I assume I should re-run sensor calibration as well. However, when I try to do any sensor calibration (over wifi or USB) QGC gives the error: Transition denied: SHUTDOWN to INIT

    How do I get around this?

    Also, is there a way to do a motor test?
    Again, QGC reports the following error:

    MAV_CMD_DO_MOTOR_TEST command not supported.

  • Dev Team

    Hi @kiprock ,

    The motor test commands I've used were from the MAVLink shell, but using the pwm test command:

    I've seen similar issues when trying to use the built in QGC PWM calibration feature... Since the Flight Core v1 can't be powered over USB (an artifact of sharing the 5VDC rail with VOXL when paired together and the fact that 500mA isn't enough to juice VOXL), it requires the python util that you linked above.

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