I’m new to PX4. I have a quad with a 800mm V frame. 6S 15x5 carbon prop on 4014 400kv motors.
It fly well with Arducopter with default PID of V frame.
In QGC I choose “Steadydrone QU4D” as it is what is the nearest configuration.
In Stabilize and Altitude it fly quite well but in Position it goes crazy and make really big and fast oscillation, almost 45°, while keeping position, really impressive to see. The oscillation is on an axis from back left motor to front right motor.
Sometimes it keep calm but if there are wind or move command it goes it oscillation.
Maybe that choosing “Steadydrone QU4D” is the mistake. I see in 10017_steadidrone_qu4d in ROMFS/px4fmu_common/init.d that it set these parameters:
param set MC_ROLL_P 7.0 (default : 6.5) param set MC_ROLLRATE_P 0.13 (default : 0.15) param set MC_ROLLRATE_I 0.05 (default : same) param set MC_ROLLRATE_D 0.004 (default : 0.003) param set MC_PITCH_P 7.0 (default : 6.5) param set MC_PITCHRATE_P 0.19 (default : 0.150) param set MC_PITCHRATE_I 0.05 (default : same) param set MC_PITCHRATE_D 0.004 (default : 0.003) param set MC_YAW_P 4.0 (default : 2.8) param set MC_YAWRATE_P 0.2 (default : same) param set MC_YAWRATE_I 0.1 (default : same) param set MC_YAWRATE_D 0.0 (default : same) param set MC_YAW_FF 0.5 (default : same)
I don’t see many difference. Any advice on how I could correct this behavior ?