Mission Planner Incorrect Battery monitor voltage

@alpa2009 wrote:

Hi,
trying to manually correct the voltage monitored by mission planner:
According to http://ardupilot.org/copter/docs/common-power-module-configuration-in-mission-planner.html you can manually adjust the measured voltage to allign with the real voltage, measured by pixhawk compatible power modules like airbotpower. While I have a real voltage (measured by multimeter on lipo) of 15.3 volts for a S4 lipo (not fully loaded, approx 60%), I have a correct power volt measurement output signal of 3.0 volt on the airbotpower to pixhawk measurement input, with aligns with 15.27 volts (which is correct), mission planner does not show the correct voltage. It started with approx. 30 voltage; by adjusting (numerous times!) the Measured battery voltage in the calibration window in the battery monitor of mission planner, I ended up with approx. 21 measured voltage showing up. The calced voltage divider is 50.5.
What can I do to correct this? is this a bug in mission planner?
to be completed, I am using:
- mission planner 1.3.39
- APMCopter V3.3.3

I had extensive contact with the manufacturer of the airbotpower module, and based on the measurements (also from the output measurement voltage signal) there seem not to be any hardwareproblem with the power module itself.

Thanks in advance,

Pascal

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