Cleanflight/Betaflight
settings to achieve receiver inputs close to the desired 1000-2000
range:
rxrange 0 1050 1950
rxrange 1 1050 1950
rxrange 2 1050 1950
rxrange 3 1050 1950
I improved the throttle center-point (where the quad hovers) with these
settings:
set thr_mid = 30
set thr_expo = 30
To do fast flips, I use these settings (flying in Horizon mode):
set rc_expo = 80
set roll_rate = 90
set pitch_rate = 90
For the battery-voltage buzzer alarm ("feature VBAT"), I found I needed
to lower the
'vbat' voltage settings:
set vbat_min_cell_voltage = 26
set vbat_warning_cell_voltage = 27
The Cleanflight/Betaflight code has a vbat-hysteresis function that
adds an annoying time-delay lag to the warning-beep response,
especially on 1S setups. See here for a patch I submitted to deal with this
function. If the 'vbat_hysteresis' configuration parameter is
available then it should be set to 0.
I found that using the Betaflight firmware and the LuxFloat PID
controller ("set pid_controller = LUX"), the quad runs quite well with
the default tuning settings.