I have used my Herelink (most recent stabele ver.) before and did all the calibrations connections fine several times.
But now I did a rebuild of the copter and can’t get the SBUS/RCIN to run.
Telemetry, Mavlink etc works fine, stable wireless connection. But I get RC failsafe and in Missionplanner all RCINs are 0 and cant do the RC calibration.
Re-paired the air-unit, re-did all the hardware- and SBUS calibrations several times, checked/ replaced the wire connections (they are correct, RC signal was working a week ago). I set the wheel to SBUS2 to have something on there and tried it with the air units second output. I set a serial port of the AP to RCIN function (100K, Rx inverted). I tried all that on the black cube, which was working before, with ardupilot copter stable, I tried all again on another AP. Also no luck. I tried it with the cube completely set up and also with only the air unit connected to the cube.
So I concluded it must be a problem with the air unit and I hooked up an oscilloscope to to the SBUS outputs and get a square signal, so something seems to be coming out of there.
Any suggestions what else I can try?