Missing APM board component . Diode?

Some how what I think is a diode on the right side from the power jumper ( bottom left on the board just below the multiplexor) is missing. It must have gotten knocked of somehow. Can you please advise what the specs are of this component and what I can use to replace it with? Or an alternative hack or work around?

Board1a.JPG

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  • Is there a 3volt output on the APM1 board? I have some low power LEDs that run off 3vs I want to connect.

  • Ok so far so good. I tried this out and it powers up the board fine. Ive not tried it with all peripherals plugged in, but its looking hopeful so far.  This is no different now than powering the board using the USB but instead I can do it using the BEC.

    APM Power hack 2a.jpg

    https://storage.ning.com/topology/rest/1.0/file/get/3692397860?profile=original
  • I thought Ill try this as well just as an experiment. This 5v pcb trace from the USB feeds along to the 4th pin on the IMU shield that goes to the APM board which basically powers the whole unit when it just running off the USB cable. Ill try powering this from the 5v bec and see what happens. Not poof!! I hope..

    Board1c.JPG

    https://storage.ning.com/topology/rest/1.0/file/get/3692397632?profile=original
  • I found this from a local supplier. Seems the right type?

    http://store.aztronics.com/index.php?route=product/product&keyw...

    http://store.aztronics.com/index.php?route=product%2Fproduct&keyword=diode+1a+20v&category_id=0&pro…
  • Are you sure it was there when you got it?

    In the past, I've received an IMU that was missing the CLI Switch and a magnetometer board that was missing the magnetometer.  3DR fixed everything in the end.

  • is it still possible to run the board without this diode? The board runs ok using the USB power so it must also be possible to do a hack to power the board via the USB input pins and feed the 5v input via there? If this is possible were would be the best place to connect?

  • It is on mine.

    It's a 1A 20v Schottky diode, pretty common part.

    Keith

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