Why is my ExpressLRS receiver not binding to the transmitter?

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

Answer: If your ExpressLRS receiver won’t bind, first ensure both transmitter and receiver are running compatible firmware versions. Mismatched versions often cause binding issues. Next, check that the receiver is in binding mode—usually indicated by a flashing LED—before you start the bind process on the transmitter. Hold the transmitter’s bind button or use the radio menu to initiate binding. Make sure the receiver and transmitter are close together, ideally within 1–2 metres, to avoid signal issues during binding. Confirm the correct UART and CRSF protocol are set in your flight controller or receiver wiring. Also, verify that the receiver has power and that all connections are secure. If binding still fails, try resetting both devices and repeating the process. Finally, consult the ExpressLRS GitHub or community forums for hardware-specific quirks or updates. Following these steps should resolve most binding problems quickly.