Smartport, the FrSky XSR, and Betaflight

The Frsky XSR – also known as the X4RS (rev1) – is a new Receiver from FrSky that is super light and small, and gives you up to 16 channels for a drone. It uses the dreaded smartport for telemetry though as does all the X series from Frsky. This mod applies to X4R-SB also…

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