I believe I may have killed my APM. I accidentally connected voltage monitoring cable backwards which no doubt sent some 12V+ the wrong ways through the board. The board still powers on but no longer provides enough power to the DIYDrones IMU (it browns out constantly). Also, I'm getting nothing from the PWM end of the board, no information from the radio, no servo control, etc.
Voltage measurements at the IMU show only around 2.5V now. Plus there no longer seems to be a common ground (approx 900 ohms of resistance) between the IMU and APM. Also, no ground continuity from the APM servo/radio input output pins and the rest of the board.
While I figure the board is probably toast, any thoughts on what connecting the voltage monitor backwards killed specifically?
PS., you can still load firmware completely fine.
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