I just build a new quadcopter using a APM 2.6 or 2.7 based flight controller which I salvaged from a crashed RTF drone (Quanum Nova Pro). I am also re-using the PCB which seems to have a Power Management integrated. Unfortunately I throw away the external compass/GPS module so I am trying to fly without them until I get replacements.
Obviously I had to disable all failsafes to get the FC armed without a compass/GPS.
I made my maiden flight today with the stabilize mode, and it seems to fly ok with following observations
with stick on center the drone drifts slighty to right and towards me. To keep it in place I need to manually compensate this, even without any wind. Is this a typical accelerometer miscalibration effect?
throttle control in stabilize is super sensitive. Just one ”click” more on throttle stick triggers fairly fast ascent, and vice cersa. How to calm this down?
I was also hoping to get AltHold working with my current configuration, since I assume it relies only on internal APM barometer and not on GPS/compass. However, i did some testing of AltHold mode while holding the quad from legs and the seems the motors where not spinning enough to even keep it in same altitude. When i tried to pull the drone downwards, it didnt increase the rotor speeds immediately. After this i didn’t have the confidence to test this mode in mid-air.
Should the AltHold work with my HW configuration?
Finally, how to get the beeps from buzzer? Is it external in APM? In that case it might be on my PCB and I am only missing some wiring.