Turnigy Plush 6A

Sorry, not translated from german version.

(only main facts translated from german version)

Original firmware with this combination of Motor and propeller results in the following sound and FFT:

In order to reduce noise at low PWM frequency I modified the BLHeli firmware.

Test firmware, sound (audible steps are described here) and FFT (not directly comparable to the picture above):

For the final firmware I decided to go with "jitter 5 bits", which is the third block in the audio recording above.