Discussions

Servo output 0 no longer working

Posted by Jon Keller on February 9, 2011 at 9:23pm

My Servo output 0 has stopped working completely.

 

I've uploaded the dancing servo demo and all the other outputs work, but 0 does not, it doesn't matter what servo I plug in. I've connected a multimeter to the voltage and ground pins, there is still a voltage there.

 

Can someone shed some light on how I can start troubleshooting this issue? I'm really starting to lose faith that this hardware will ever work the way it's suppose to.

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Replies

  • Developer
    Doug Weibel February 10, 2011 at 3:43pm

    If a single channel has suddenly stopped working it is probably 1 of 2 things.  

    1. You have a solder joint that has worked loose.  This can happen especially on the 90 degree header from the stress of connecting and disconnecting servo leads.
    2. You have burnt out a channel in the Mux chip.  That chip is particularly sensitive to Electrostatic Discharge, and I usually loose at least one a winter when the air is dry and the furnace is running....
  • Distributor
    Martint BuildYourOwnDrone.co.uk February 10, 2011 at 7:43am
    Can you operate a servo on that channel with you TX?

    Regards

    Martin
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