When setting up a flying wing using the TBS Caipirinha airframe preset in QGC the servos are not at zero trim level (1500us) for pitch in manual mode.
Anyone know why?
There's an offset in that mixer. https://github.com/PX4/Firmware/blob/master/ROMFS/px4fmu_common/mixers/caipi.main.mix#L27
Thank you very much!Why would it be an offset in the mixer? And how is the correct way of removing it? Do I really have to change the mixer directly to get the servos centered?
you can try using the new PWM_MAIN/AUX_TRIMn parameters to recenter, but I'm not sure how that interacts with a mixer offsetIIRC, the parameters override the offset