You do need a flight controller to get telemetry, but my question is then what do you do once you have that telemetry? I don’t know of any efoil remotes that are compatible with flight controller telemetry. I have the Flipsky VX3 for instance and I do not believe it will display telemetry in this format (someone correct me if I’m wrong) .
Furthermore, the PPM signal from that remote appears to be different from a “normal” one. The flightcontrollers I have tried (using betaflight, INav, and even cleanflight) all do not recognize it. Not even an Arduino with the PPM library seems to be usable with the PPM signal.
This would be great if it could work because then it basically becomes a VESC, i.e. you can adjust throttle curve and various types of settings.