Can I 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 (ELRS) is designed to work primarily with digital receivers using CRSF or SBUS protocols, which provide low latency and reliable telemetry. Cheap PWM receivers often only output individual servo signals for each channel, which ELRS transmitters do not natively support. However, you can still use ELRS as your radio link if your flight controller supports PWM input from a separate receiver or if you use a PWM-to-SBUS converter.

Step-by-step: 1) Check if your flight controller can accept PWM inputs directly. 2) Bind your ELRS transmitter to a compatible ELRS receiver, which outputs SBUS or CRSF. 3) If you only have a PWM receiver, consider using a converter module to translate PWM signals into SBUS or CRSF. 4) Connect the ELRS receiver to the flight controller, and configure your flight controller to accept the correct input protocol.

For wings, weight and size are important, so using a dedicated ELRS receiver is usually best. It ensures reliable control and telemetry with minimal latency, rather than relying on a cheap PWM receiver.