Using ExpressLRS with a Basic PWM Receiver on a Wing

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

Answer: ExpressLRS is designed primarily for high-speed serial protocols like CRSF (Crossfire), which offer low latency and better telemetry. Cheap PWM receivers typically output standard pulse-width modulation signals that are slower and less efficient, making them less ideal for ExpressLRS. However, you can use a cheap PWM receiver if your flight controller supports PWM input and you configure it correctly.

Here’s how to set it up:

  1. Ensure your flight controller supports PWM input on the pins connected to your receiver.
  2. Bind your ExpressLRS transmitter module to the PWM receiver if it supports it (some cheap receivers might not support ExpressLRS binding).
  3. Configure your flight controller’s receiver settings to use PWM input protocol.
  4. Test control response and range carefully, as PWM receivers usually have higher latency and shorter range compared to native ExpressLRS receivers.

For optimal performance on a wing, it’s better to use an ExpressLRS-compatible receiver with a serial interface (like CRSF). This will give you lower latency, better range, and reliable telemetry. If budget is tight, PWM can work but expect limitations in responsiveness and range.

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