I am building a new drone and I had a crash in the first flight (Crash! Drone went up without control, passthrough FrSky telemetry bug?). But after the reconstruction of the quadcopter and the upgrade to Copter 4.0.3 I have made some tests.With the drone tied to the ground I did a Motor/Compass calibration and later I restarted the Pixhawk and armed in Stabilize, but I saw that the motors had vibrations. When I watched the logs I found that the PWM of the motors were erratic:
Log: 00000015.BIN (820 KB)
I don’t know If I have a bad Pixhawk or a firmware bug.