Can You Use ExpressLRS with a Basic PWM Receiver on a Wing?

Question: Can I run ExpressLRS with a cheap PWM receiver on a wing?

Answer: ExpressLRS is designed primarily for digital protocols like CRSF, which offer low latency and high reliability. Using a cheap PWM receiver with ExpressLRS is generally not feasible because ExpressLRS transmitters and receivers communicate using a specific digital protocol, not standard PWM signals. However, if your wing has a flight controller that supports ExpressLRS, you can connect an ExpressLRS receiver directly to it via UART, and the controller will output PWM or other servo signals to your servos.

If you only have a PWM receiver, it won't communicate with the ExpressLRS transmitter. To use ExpressLRS on your wing, you should invest in an ExpressLRS-compatible receiver. These receivers are compact, lightweight, and often come with built-in diversity antennas, ideal for wings. Once installed, bind the receiver to your ExpressLRS transmitter and connect it to your flight controller or servos accordingly.

In summary, you can't run ExpressLRS over a cheap PWM receiver, but you can replace that receiver with an ExpressLRS one for the best performance.