These are accuracy questions really.
First - Voltage readout. Am using a 3DR pixhawk (genuine) with the 3DR power module.
Testing a 4000mAh 11.1V battery I'm reading 12.61V with a digital multi-meter, and Mission Planner is showing me 12.49V 99% charged.
A difference of 0.12V. My question is - is this within acceptable tolerance? Should I be concerned about that small of a difference and try to adjust the compensation to have it match the multi-meter reading?
Second - when the quad is sat stationary I will get readings on things like ground speed ( I don't have an airspeed sensor installed), vertical speed etc. in the 0.X range and they flicker and fluctuate slightly. Again is this something I need to be concerned about or is it just slight variances in the GPS and compass readings?
Advice would be great, thanks.
A 2% error on the multimeter or MP?
And, ya, it's definitely possible the MM could be off whack too.