I’m thinking about buying the PX4 pixhawk (or another good automated flight control) and use an OSD with it. I’m wondering if there is a one that can give the pilot accurate battery charge measurements? (without having to run a separate telemetry system) Or if this is a feature that is in the works
Actually, the Pixhawk measures voltage and current itself through the power module and just send this data via the telemetry. The MinimOSD doesn’t do much more than listening to the telemetry via a Y-cable and display the parts you want to see.
In the APM platform world, an OSD is actually really literally only an OSD => display system.
In the R/C-world, usually what is referred to as OSD has all kinds of extra functions, such as GPS, power measuring, etc.
ok. Sounds to me like the “APM platform world” way of doing it make more sense 
But with a pixhawk and minimOSD would I be getting accurate battery charge measurement? This guy seems to think I wouldnt rcgroups.com/forums/showpost … count=1237 To fly fairly long distances this seems mandatory
Yeah, I had some issues with a power module too last year but you can manually calibrate it via Mission Planner if you have a good multimeter and then it’s pretty exact. At least for me after the calibration it was within 0,01V every time I re-checked.
How to calibrate, here:
copter.ardupilot.com/wiki/common … ge_reading
[quote=“RogelioN”]How to calibrate, here:
copter.ardupilot.com/wiki/common … ge_reading[/quote]
Thanks for the link, it has resolved my issue of incorrect voltage on the osd. 3s battery reading at 30volts