RPM Sensor

[RCdiy]

When we document the RPM sensor.
1-30,000 is the range for blades and multiplier
This may be important for the heli guys who calculate head speed.
For eample a RPM senso on a brushless motor
Magnet Pole Pairs = 7
Main gear teeth 162
Pinion gear teeth = 14

OpenTX sensor head speed
blades = 7 x 162 = 1134
multiplier = 14