Micro Motor Community

BetaFPV FC power issue


Hello everyone,

I have a BetaFPV OSD FC that has been working brilliantly for a while, but recently it’s half dead (!?).

The FC will not arm or receive any commands from the Tx unless powered by the USB.

I can spin motors, arm, change flight modes everything while the fc is plugged into the USB (and battery). But if powered just by battery it’s unresponsive to any Tx commands.

Any ideas ?


FC only


There is an know issue in older revisions of this board. The rx will stop working after being powered by battery and usb at the same time. It was not designed to have 2 power sources connected at the same time.

More info on the issue here: http://support.betafpv.com/support/solutions/articles/27000021324-troubleshooting-battery-polarity-reversed-connection