Cetus X won't bind with LiteRadio 3 SE - help needed
Cetus X won't bind with LiteRadio 3 SE anymore
Hey, hoping someone can help. My son's Cetus X used to bind fine with
his LiteRadio 3 SE but it stopped working and we can't get it to
connect again.
What we have:
- Drone: BetaFPV Cetus X (F4SX1280 FC, ELRS receiver via CRSF)
- TX: BetaFPV LiteRadio 3 SE (2.4GHz ELRS, built-in battery)
What's happening:
- The drone keeps slow-blinking blue, like it's searching for signal
- TX power LED is red when on (normal I think)
- Short press on BIND button on the TX makes it switch between red
and blue (cycling protocols I guess)
- Long press on BIND does absolutely nothing, no LED change, no beep
- Tried the power-cycle bind on the drone (plug battery on/off 3 times
quickly) and the LED pattern actually changed - went fast blink,
then 2 quick blinks, then back to slow - so I think it did go into
bind mode, but the TX never picked it up
What I checked in Betaflight:
- Firmware is Betaflight 4.4.0 from Oct 2023
- Receiver is set to Serial (UART) with CRSF, looks correct
- expresslrs_uid is 0,0,0,0,0,0 (so no binding phrase on the drone side)
- expresslrs_domain = ISM2400
- Arming disabled because of RX_FAILSAFE (makes sense, no signal)
- Channel bars don't move at all when I move sticks on the TX
What I haven't tried yet:
- Checking TX firmware version via WiFi mode
- Flashing anything (didn't want to brick stuff without knowing)
Any ideas? Do I need to flash both to matching ELRS versions, or set
a binding phrase via the TX WiFi config? Not sure where to go from here.
Thanks!