The FMU receives its power through this connector, coming from the FMU power module. It has two 5V and two ground wires, and one pin for the voltage sensor signal, and another pin for the signal from the current sensor. These sensors are also included in the FMU power module.

We have a separate page about the FMU power module, which provides the power to the power input.

Connector pinout

RDDRONE-FMUK66 Rev. C schematic

RDDRONE-FMUK66 Rev. B schematic

Presently we re-use the standard power adapter from PX4 products. We are working to supply one with the correct JST-GH end already applied.

Power modules include a regulator to adapt from 2S (7.4V), 3S (11.1V), or 4S (14.8V) battery input and provide +/- 5.3V power to the FMU. Some power adapters may allow higher input voltages. In addition to power regulation it includes signals for voltage and current monitoring.

Power distribution

This adapter also passes power through to the rest of the drone or rover platform. In addition there will typically be an additional power distribution board (PDB) to which the drive motors can be connected. A small PDB is included in the HoverGames kit, it should fit in the middle of your drone frame.