Spirit RPM Sensor

This sensor is HALL type which senses RPM by motion of the rotating magnets. Usually 1 - 2 neodymium magnets are mounted on the fan of combustion helicopters with a Nitro motor.

Wire layout

Orange wire: RPM Output Signal

Red wire: Ground

Brown wire: 3.3V - 15V

1 Wiring Example

Powering Lead with Red and Brown wires can be plugged to any free port with a BEC voltage. Signal Lead with Orange wire must be plugged always at the middle Pin of the ELE/PIT/AIL port (Spirit 1, Spirit Pro, Spirit 2, Spirit GT) or EXT/RPM/E2 port (Spirit RS and Spirit GTR).

2 Magnet mounting

We highly recommend to orientate each magnet as Active for a proper operation. More magnets will result in a higher reading resolution thus increased readout precision.

3 Governor Settings

When sensor is connected, please set the Sensor Divider parameter so that the value will represent count of the active magnets. Usually it is 1 or 2 magnets.