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No Boot on Battery/ESC or UBEC

Posted by Andy Demartini on January 17, 2012 at 2:10pm

I've been testing my purple board through the USB and it works good enough to replace an ArduPilot Mega 1 on an EasyStar.  Everything is connected and the power jumper is in so the ESC is supplying system power.

But, the APM2 will not start up on either ESC or UBEC power.  Even wired in, it still boots on the USB power, as it has always done.  The APM1 never had any problems with power on this plane and another APM1 always works on a T-28.

Has anyone seen this problem with ESC/UBEC power? 

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Replies

  • Emiliano Fortunati February 23, 2012 at 12:00pm

    Same Issue for me too.

    Only blue led will power on and stay solid.

    To boot the APM2 I've to press the reset switch or power it by USB cable.

     

    I've no xbee connected, only APM2 and 5V on output rail.

  • Jason Brown February 17, 2012 at 7:55pm
    I just received my APM2. I connected the jumper to power through the output rail. Once configured I was able to fly quadcopter a little. But for some reason the board stopped being able to be powered by the ESCs. The output rail has 5v when the battery is connected and jumper has continuity. Is there workaround besides adding an extra battery for APM2?
  • Andy Demartini January 17, 2012 at 5:37pm

    I believe this has been found and solved.  When using APM2, it will not start if there is any traffic on the telemetry channel.  I had Mission Planner open and waiting for the startup info while applying power to APM2.  This method consistently prevented APM2 from booting.  I changed the procedure to have Mission Planner disconnected and the APM2 now boots normally when power is applied.

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