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

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

Answer: First, ensure both your transmitter and receiver are flashed with compatible ExpressLRS firmware versions. Mismatched versions often prevent binding. Power up the receiver and enter binding mode—usually by holding a button or shorting a pad while powering on. On the transmitter, enter the binding menu and select the correct model and protocol. Make sure the receiver’s LED is blinking, indicating it’s ready to bind. Keep the transmitter close to the receiver (within 1 metre) during this process. If binding fails, check wiring, especially the connection to the receiver’s CRSF or SBUS port and power supply voltage (typically 5V). Also, confirm antenna connections are secure. Finally, try resetting both devices and repeat the binding steps. If you still can’t bind, re-flash both devices with the latest stable firmware and double-check your model settings. Following these steps should resolve most binding issues with ExpressLRS receivers.