Question: Why won’t my ExpressLRS receiver bind to the transmitter?
Answer: First, ensure both your transmitter and receiver are running compatible ExpressLRS firmware versions. Mismatched firmware can prevent binding. Power the receiver properly—use a stable 5V supply and check that the receiver’s LED indicates it’s in binding mode (usually a flashing light). To enter binding mode, press and hold the bind button on the receiver while powering it on. On the transmitter, enter the ExpressLRS module’s binding mode as well. Confirm the correct UART and receiver protocol settings in your flight controller or radio system, matching the receiver type. Keep the transmitter and receiver close (within 1 metre) during binding to ensure a strong signal. If binding still fails, try re-flashing the firmware on both devices with the latest versions from the official ExpressLRS GitHub. Also, check antenna connections on both ends; a loose or damaged antenna can cause binding failure. Following these steps usually resolves binding issues promptly.
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