expressLRS

Yes, that's correct. None of the limited memory transmitters support CRSF telemetry.

I finally found what I was doing wrong. I was connecting signal from Devo 7E to PPM pin of ELRS TX module instead of SPort pin which is next to GND.

It works now, so I can also confirm that Devo 7E works with ELRS modules.

Thank you very much Hexfet for your development which keeps our beloved Deviation TXs alive.

You're welcome. Thanks for the update!