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 versions often cause binding failures. Next, confirm the receiver is powered correctly—use a stable 5V supply or the recommended voltage per your receiver’s specs. Put your transmitter into bind mode, usually by holding the bind button or selecting bind in the LUA script. Then, power on the receiver while holding its bind button or shorting the bind pads as per your model’s instructions. The receiver’s LED should flash rapidly during bind mode and turn solid when binding is successful. If it doesn’t bind, check the antenna connections on the receiver for damage or loose solder joints. Also, ensure no other nearby ExpressLRS transmitters are actively broadcasting on the same frequency, which can interfere. Finally, try resetting both devices and repeat the process. Using the ExpressLRS LUA script on your transmitter helps simplify binding and configuration. Following these steps should resolve most binding issues.
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