Thanks to Chris and the docs and videos, after some years of settings my 620 class flies very well; I read this topic because I flown with mode 1 H_RSC until today; then, I sold my radio and I was without radio for 1 months because the new was on the way; so I read the Joystick/gamepad for GS and yesterday I flown without traditional radio, but only with GS and gamepad; I note 3 things:
the first is that in RSC mode 1, when disconnectin gamepad, the firmware seems to memorize the last input of motor interlock (CH 8) of the traditional radio or RC OVERRIDE from gamepad, before entering in FAIL SAFE, and motor don’t stops, even in H_RSC mode 1 in wich, during the fail safe, the input read b y the pixhawk is zero for all channels; but for safe I changed to RSC mode 3 flat curve (I have electric motor with governor);
the second thing I learned, is about FS behavior with only GS (and gamepad contrller in RC override): the docs must explain better that: because of gamepad hasn’t physicals switch, but the motor interlock (CH8) is controlled with a sort of “summarize” or “incremental” control, in case of disconnection and reconnecting the gamepad, the firmware on flight controller resets the so called from me, “volatile channels” from gamepad (that was set the CH 8 with temporary buttons because it hasn’t got physical switch with on or off), like CH 8 and auxiliaries, to the TRIM value; so if the trim value of CH 8 is at minimum, at reconnection of gamepad, the motor stop because of the interlock disabled; fortunately I done many tests on ground in few days, and in flight I set the trim of CH 8 above the minimum, so if I disconnect the gamepad and reconnect, after the radio fail safe ON, the flight controller on “volatile” CH 8 reads that the motor interlock is enabled and the motor don’t stops, so the copter can continue the RTL withou crash because the motor is running, until I change flight mode according to ordinary;
the last things I noted is about the behavior of throttle FS and GS FS; if the there is no traditional radio as backup, but I fly only with RC override, also with GS FS set to mode 2 (continue flying in AUTO mode), it don’t continue in auto mode in case of lost radio signal from GS; it seems that after the lost of rc override mode, the firmware is looking for a traditional radio, and if Throttle FS is in mode 1 (always RTL), the helicopter do RTL; the only mode to continue the auto mission in case of GS lost signal, is to set both throttle FS and GC FS, to 2.
In conclusion, the docs and Chris videos, are very very well done and explained, and the firmware is very very safe; in general, the traditional helicopter firmware and Mission Planner GS, can be considered a professional platform.
I’m from Italy. Excuse me for my bad English and errors.
Thank you.
