Why Won’t My ExpressLRS Receiver Bind to the Transmitter?

Question: Why won’t my ExpressLRS receiver bind to the transmitter?

Answer: Start by confirming both your transmitter and receiver are running compatible ExpressLRS firmware versions. Mismatched versions often cause binding failures. Next, ensure the receiver is powered correctly, ideally with a stable 5V supply, and the bind button or pad is pressed or shorted during power-up to enter bind mode. On your transmitter, select the correct module profile and press the bind button to initiate binding. Also, check that the receiver antenna is properly connected and undamaged, as poor reception can prevent binding. If you’re using a Lua script, make sure it’s up to date and that the transmitter’s RF output is enabled. Finally, keep the transmitter and receiver close together (within 1 metre) during binding to avoid signal loss. If issues persist, try re-flashing both devices with the latest firmware and double-check wiring and connections. Following these steps should help you successfully bind your ExpressLRS receiver to the transmitter.