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APM 2.8 flight controller doesn’t output

Posted by munkhjargal nyamsuren on April 9, 2017 at 7:38am

i built my first quadcopter f450. APM2.8 flight controller, FS-TH9X transmitter, FS-R9B receiver simonc 30A ESC etc. problem is motors not rotating. if connect receiver into ESC directly motor rotate normally by controller. if connect to flight controller it won't rotate. i'm sure every thing connected correctly. i can't do ESC calibration because it doesn't beep(ESC calibration beep) when i maximize throttle and turn on the quadcopter. everytime i start quadcopter, one long beep after quadcopter turn on musical tone  i can't do ESC calibration because it doesn't beep(ESC calibration beep) when i maximize throttle and turn on the quadcopter. please help me

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Replies

  • OG April 9, 2017 at 11:52am
    Sounds like your ESC are dead! Or your Apm is dead on PMM out put side usually your unable to connect by USB is this happens.
    To find out.
    1. Connect your ESC directly to the river throttle Chanel and power the ESC and Rx move the throttle ,if ESC rispond motor come on , your ESC is good . Repeat for each ESC and motor pair.
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