I am planning to interface sonar with ROV, which will be connected to pixhawk ADC pin (3.3 V). I am using hardware similar to BlueROV (raspberry pi and pixhawk). It requires high sampling rate too (800K).
Some of the resource I could find were related to Airspeed sensor adc interface.
I couldn’t find more resources over the internet. Require suggestion on the best possible way to read/sample ADC value from pixhawk?