I’m looking to power a liquid level sensor that requires 5 volts for power. Nothing on my airframe provides 5 volts without using a voltage step down of some sort. In an effort to reduce weight on an already heavy (48ish pounds) build I’m considering using the 5 volts off the RFD900x. To power the sensor I’ve connected pins 2 and 6 on the RFD to the corresponding ground and power on the Pixhawk 2.1’s Aux 1, providing power to the Aux rail.
I currently have a DC motor set up as a dummy load for testing, but I am wondering if there will be any negative affect in doing this, such as overdrawing the telemetry port on the pixhawk? Everything seems to power up and connect properly on the bench however.