Using ExpressLRS with a Budget PWM Receiver on a Wing

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

Answer: ExpressLRS is designed primarily for high-speed digital protocols like CRSF, so running it with a basic PWM receiver isn’t straightforward or recommended. PWM receivers output individual servo pulse signals for each channel, while ExpressLRS receivers communicate digitally over a single wire. To use ExpressLRS, you need a compatible ExpressLRS receiver, which connects directly to your flight controller via UART or SPI.

If your wing currently has a cheap PWM receiver, you can upgrade by replacing it with an ExpressLRS receiver designed for your setup. Connect the ExpressLRS receiver to your flight controller following the wiring and configuration instructions specific to your FC and ExpressLRS version. This will give you better range, lower latency, and more reliable control.

In summary, you cannot simply run ExpressLRS on a cheap PWM-only receiver. Instead, swap to an ExpressLRS receiver and configure your system accordingly for the best performance on your wing.