I recently replaced the voltage sensor with a new one (from blue robotics). It says revision 2 on the packaging.
I’ve included two photos for you here. No led on, and it reads 0.0V all the time in QGC. I bought 3 of three and they all have that behaviour.
In the QGC setting page under Power I have it set as Voltage and Current and BlueRobotics V2.0
Any ideas why it reads 0.0 ? The robot works. When I plug in the old sensor (which appears smaller) from my older bluerov2, it reads 16.4V. Hmmmmm ?