Hello! I’ve tried to fly indoor to test vibrations level, in STAB mode all was OK but when I switched to ALTHOLD - my drone go crazy and smash to wall.
I looked to logs - after turning ALTHOLD drone got land condition (?), baro alt < 0, maybe this is a reason?
Log attached.
00000012.BIN (796 KB)
QUAD X, 450mm frame, pixhawk 1, no gps fix
Hello @Yuriy_Homyakov,
I just check quickly your logs, and there is a FAILSAFE-BATT trigger.
Maybe your battery was too low ? Have you checked it already ?
It looks like a mechanical failure. In particular a failure of motor 3 (front left on a QuadX). My guess is the ESC has a low-voltage cutoff enabled. Many ESCs allow disabling the low voltage cut-off but it depends upon the ESC. The battery voltage, if correct, is very low at only 8.5 volts at the end…
Hope this helps
