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mostafa-elkoumy / ardupilot-mega

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Problem with voltage and current displayed in Mission Planner #874

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 

When I enable the Battery Monitor in Mission Planner voltage, current and 
percentage showing strange readings, jumping up and down even when the power 
module is not connected to the APM.

1. Settings are: "Voltage and Current", "3DR Power Module", "APM2.5-3DR Power 
Module".  
2. I measured the voltage at the fuse's lead (it's 5V) and typed it into the 
field labeled "1. APM Input voltage" as described in the manual.

I have the APM2.5, Power Module came with the APM, uBlox LEA-6H GPS module, 3DR 
Radio kit, Mission Planner 1.2.35 and using Windows 7.

The readings are with USB connection, with or without battery and when the 
Power Module is not connected to the APM between 0.5-23V, 1-40A, around 75%.

If the Power Module is connected, USB or 3DR radio kit and battery connected 
too it shows 49.95V, current and percentage seem to be right but not really 
sure.

The voltage reading is not changing when the motors running or the battery 
voltage gets lower.

Original issue reported on code.google.com by steffen...@googlemail.com on 18 Feb 2013 at 5:34