I’m using a cube orange, two HERE 3, Herelink, TF02 pro lidar, T-motor MN605-S standard arm set on 6s lipo (Alpha 60A LV ESC).
I’m planning on flying 2-3 10000mah 6s lipo.
Propeller size is 22 inch.
To everyone out there who has some more experience regarding setup and tuning of these mid size to large multirotor. Do you have any advice or something that’s easy to miss before the first flight?
I’m planning on doing a first flight to try and get some hover throttle values. Than go on and tune my filters. I know I have to enable the fft but there was some other mask parameter to chose between logging filtered or un filtered values, right?
I would set
INS_LOG_BAT_MASK,7 (get all the IMUs)
If the ESCs are separate to the motors and motor mounts use:
MOT_THST_EXPO,0.76 (dont use the low 0.2 for Flame ESCs, which is likely wrong anyway)
If the ESCs are built into the motor mounts use:
The Flame ESCs may or may not do something funky with the thrust curve - it’s hard to nail down.
The Alpha ESCs probably dont do anything strange with the thrust curve when they are (purchased) seperate from the motors, in this case use the calculated MOT_THST_EXPO
The T-Motor combo units (motor and ESC combined in one arm-mounted unit) seem to be an Alpha ESC and some independant thrust stand tests have shown them to be MOT_THST_EXPO = 0.4 and this is probably a safe bet.
Once you get flying you can always adjust MOT_THST_EXPO based on:
set too high you can see instability at low throttle
set too low you can see instability at high throttle
My batteries are mounted on top of my frame, as you can see on the picture in the initial post, the batteries are located quite close to the FC inside of the sandwich designed frame.
The battery payload will change along with the bottom mounted payload. The bottom mounted will most of the time be a 3 axis camera gimbal the size of a gremsy t3. So the bottom payload might be affecting the CG a lot since it will be hanging a little bit further down from the frame.
Maybe it would be a good idee to tune the frame with some light payload on. Than it won’t be such a big difference to go up and down a bit in payload weight as if it would to go from no payload to maximum payload weight