I’m currently trying to calibrate the voltage and current readings in Mission Planner as the battery health level doesn’t seem too accurate.
I got this watt meter and attempted voltage and current calibration according to the ArduPilot tutorials at https://ardupilot.org/copter/docs/common-power-module-configuration-in-mission-planner.html.
Voltage calibration went fine and the voltage divider was set to around 10.7, however, the measured current is way too low. When I bring the current draw close to 10 (according to the watt meter), Mission Planner still displays it as around 1 Ampere. In the ArduPilot explanation video on their page, they ended up with an “Amperes per volt” value of around 17 +/-1. I’d have to set this value above 100 to get a halfway decent reading. That can’t be good, can it?
So, assuming it is a problem, did anybody ever experience it?
Monitor = Analog Voltage and Current
Sendor = 0: Other
HW Ver = 4: The Cube or Pixhawk