High-performance Open Source Radio Control Link with telemetry and low latency.

ExpressLRS aims to provide the best completely open, high refresh radio control link while maintaining a maximum achievable range at that rate with low latency. Vast support of hardware in both 900 Mhz and 2.4 GHz frequencies.

- ExpressLRS wiki for SPI receiver, Click HERE

- Make sure Receiver and TX module both are running ExpressLRS 2.0

Wiring with FC

• Receiver RX — FC UART_TX  for Telemetry

• Receiver TX — FC UART_RX  for Control

• Receiver 5V — FC 5V or 4v5

• Receiver G — FC GND

• Receiver protocol: Serial-based receiver – CRSF

Traditional Binding

• Receivers have ExpressLRS fw V2.0 preloaded without BINDING_PHRASE

• Power on and off your receiver three times

• Make sure the LED is doing a quick double blink, which indicates the receiver is in bind mode

• Use the [BIND] button on the Transmitter Lua script, which sends out a binding pulse

• Receiver will switch to slow blink once it has received binding pulse.

• Power off and power on receiver again. If the receiver LED switch to solid on from slow blink, it’s bound with your transmitter.