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 cause binding issues. Power the receiver properly, using a stable 5V or recommended voltage, and confirm the receiver’s LED indicates it’s in bind mode (usually a fast blink). To enter bind mode, press the bind button on the receiver while powering it on or follow your specific model’s instructions. On your transmitter, select the correct module profile matching the receiver (e.g., 2.4GHz or 900MHz). Start the binding process from the transmitter’s ExpressLRS menu. Keep the transmitter and receiver close (within 1 metre) during binding to ensure a strong signal. If binding still fails, check wiring connections, especially the SmartPort or CRSF link cable. Finally, try resetting both devices and repeat the process. Following these steps usually resolves binding problems with ExpressLRS setups.