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The motor rotation direction can be set to normal or reversed.
In bidirectional mode, the center throttle is zero. Above spins motor in one direction and below in the opposite direction.
The startup beep melody can be set using RTTTL notation.
The least amount of power applied when starting up the motors.
Increase if motors are not able to start up with low throttle input, e.g. smaller motors may need more startup power.
Sets the strength (volume) of regular beeping.
Sets the strength (volume) of beacon beeping.
Note that setting a high beep strength can cause hot motors or ESCs!
The amount of time before beacon beeping begins.
Beacon beeping will begin if the throttle signal has been zero for this given time, and continue beeping at an interval of 3 seconds.
Brake (and continue to brake) while the throttle is zero (disarmed).
Limits power when starting motors or reversing direction.
This setting configures how fast the motor responds to increasing the throttle.
Power is limited according to how fast the motor is spinning (RPM).
Lower values will avoid power spikes but can also decrease acceleration and maximum attainable speed.
This setting manages the primary function of
Startup Powerin BLHeli_S.
A higher timing is less prone to desyncs and can provide more power at the cost of efficiency.
Determines how aggressively power should be "cut off" during demagnetization.
When enabled the effective PWM resolution is increased to 11-bit (2000 steps) by making the PWM duty cycle not constant.
It is generally recommended to leave this on especially with PWM frequencies above 24kHz.
Without dithering the PWM resolution depends on the chosen PWM frequency:
- 24 kHz: 10-bit (1000 steps)
- 48 kHz: 9-bit (500 steps)
- 96 kHz: 8-bit (250 steps)
Dithering varies the duty cycle across multiple PWM pulses to approximate the effect of a 11-bit resolution.
For technical details see the this application note from ST.