This caught me out big time. And I thought it might be of help to someone else to post my experience even if it was foolish.
The scenario: I have two AP one with V1 shield, Thermopile sensors. Second one with V2 shield with IMU +V2 I only have one GPS EM406 that I swop around (waiting to get UBlox) for second AP.
The problem: I could not get the throttle to work on the First AP every ting else work fine, after rereading the manual rescan the discussions and blogs for similar problems I found some and try all the options only to end with the same problem –no throttle-. Now I started to swab shields around. I want to add that if I remove the shield the throttle works fine.
The result was and a good lesson not to take short cuts when building. When I soldered the pins of AP1 I have also soldered in Pin 13 so instead of de-soldering pin 13 I have just cut the pin flush to the plastic base. Everything was fine till I used Velcro to strap the AP to the base in the airframe it put enough force on the shield to make pin 13!! . I will not repeat the names I called myself.
The lesson Read the manual on the lines and between the lines and do not take any short cuts it will bite you!!
Comments
I suppose troubleshooting is part of what makes the AP project interesting if you win (if you don’t there is always the community the discussions have been of great help and interest and you will win)
Regards
Andre
Nice troubleshooting. You were able to connect the cause (Velcro wrap) and the effect (pin 13 making unexpected continuity).
Regards,
TCIII