Multiple Receiver support with non-Pixhawk boards?

[cbf123 (Chris Friesen)]

The Multiple Radio Control Receivers page says that multiple receivers are only supported by boards with an IOMCU co-processor.

Does that mean that boards like the Matek H743-wing series cannot use multiple receivers?

[dkemxr (Dave)]

@cbf123

Does that mean that boards like the Matek H743-wing series cannot use multiple receivers?

That’s what it means. The only good reason I can think of for having an IOMCU.

[cbf123 (Chris Friesen)]

That seems like a weirdly arbitrary limitation. Why not just allow multiple receivers, allow the user to designate one as the master, and if it failsafes or stops sending a valid signal then fall back to the other one?

[Yuri_Rage]

Many protocols allow for redundancy independent of the autopilot. Both FrSky and Spektrum offer that flexibility. While I’m not a fan of either for my own use, I could understand leveraging their redundant receivers on a large craft or critical application.

I once got pretty creative and did this:

SIYI HM30 with RC receiver redundancy

I added an SIYI HM30 video/telemetry system to my Rover mower late last year and have been somewhat impressed with it, though it hasn’t been without a few struggles. Today, I solved one of those. The beginning: [image] I often operate the mower in MANUAL or ACRO mode within very close range when trimming or defining perimeters. More often, though, I monitor remotely, at distances up to several hundred yards, which can push the range of my FrSky radios. The HM30 tends to greatly outperform …

Now I use ExpressLRS, which offers superior range and better telemetry forwarding.