Using 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 primarily designed for digital communication via protocols like CRSF (Crossfire) or ELRS native UART, which offer low latency and high refresh rates. Cheap PWM receivers are analog and typically do not support ExpressLRS directly. However, if your flight controller has an ExpressLRS-compatible module and the receiver only outputs PWM signals, you can connect the PWM receiver to the flight controller’s PWM input pins, but you won't get the benefits of ExpressLRS telemetry or improved latency. For wings, where space and weight matter, it's better to use a dedicated ExpressLRS receiver that supports CRSF or native ELRS protocols. These receivers are small, lightweight, and provide a more reliable connection with features like telemetry and longer range. In summary, while you can physically run a cheap PWM receiver alongside ExpressLRS on your wing, you won’t be using ExpressLRS through that receiver. For full ExpressLRS functionality, invest in a compatible digital receiver and connect it via UART.