"Thank you. If the FMA are put together as the Paparazzi, a voltage divider supplies Vout/2 to one leg of the OpAmp. So at zero angle the sensor reads Vout/2. That makes sense."
I am learning how to work with the X-Y IR sensor and I have a neophyte question. I power the IR sensors from the receiver, with Vout~5V from the BEC. The same source powers ardupilot (I guess it is denoted Vcc in the schematic, assuming that no…