ExpressLRS Protocol Guide: From Basics to Practice A comprehensive guide covering ExpressLRS open-source protocol, frequency band selection, LoRa technology, and RF PCB design Introduction In the world of FPV drones, the latency and range of the control...
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ExpressLRS Protocol Guide: From Basics to Practice A comprehensive guide covering ExpressLRS open-source protocol, frequency band selection, LoRa technology, and RF PCB design Introduction In the world of FPV drones, the latency and range of the control link define the ceiling of the flight experience. Traditional commercial protocols either suffer from high latency, limited range, or require expensive proprietary hardware. ExpressLRS (ELRS) has completely changed this landscape. As an open-source, high-performance RC link protocol, it has rapidly become a favorite within the community. Product Overview ELRS is not a commercial product, but an open-source firmware that runs on general-purpose RF modules (such as Ebyte's E80 series dual-band LoRa modules). It works with specific MCUs, and once flashed with the firmware, can be used as either a transmitter (TX) or receiver (RX), communicating with the radio or flight controller via the CRSF protocol. [Image: ExpressLRS Open-Source Protoc
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