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59 lines
2.8 KiB
Markdown
59 lines
2.8 KiB
Markdown
# OpenRX
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Open source **ExpressLRS receiver** family for FPV, part of the incutec
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OpenDrone line. Four variants share an ESP32-C3 core and the ExpressLRS unified
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firmware, and differ in radio, band, RF front end and antenna.
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<p>
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<img src="images/openrx-lite-front.png" width="200" alt="OpenRX-Lite" />
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<img src="images/openrx-lite-ufl-front.png" width="200" alt="OpenRX-Lite-UFL" />
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<img src="images/openrx-mono-front.png" width="200" alt="OpenRX-Mono" />
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<img src="images/openrx-gemini-front.png" width="200" alt="OpenRX-Gemini" />
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</p>
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[](https://github.com/OpenDrone-hw/.github/blob/main/CONTRIBUTING.md#the-life-of-a-project)
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[](https://opendrone.be/products/openrx)
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[](https://discord.com/channels/1494019459822653512/1494758332903456969)
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[](https://www.youtube.com/watch?v=ssmQkRkXE84)
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Maintained by [@bastian2001](https://github.com/bastian2001).
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## Specifications
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| | Lite | Lite-UFL | Mono | Gemini |
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|---|---|---|---|---|
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| Band | 2.4 GHz | 2.4 GHz | Dual band | Dual band, Xrossband |
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| Radio | SX1281 | SX1281 | LR1121 | 2x LR1121 |
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| Antenna | On-board ceramic | U.FL | U.FL | 2x U.FL |
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| Telemetry power | 13 dBm (20 mW) | 13 dBm (20 mW) | Up to 22 dBm (158 mW) | Up to 22 dBm (158 mW) |
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| Protocol | CRSF | CRSF | CRSF | CRSF |
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| MCU | ESP32-C3 | ESP32-C3 | ESP32-C3 | ESP32-C3 |
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| Input | 5 V pad | 5 V pad | 5 V pad | 5 V pad |
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| Firmware | ExpressLRS | ExpressLRS | ExpressLRS | ExpressLRS |
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| Flashing | Betaflight passthrough or Wi-Fi | Betaflight passthrough or Wi-Fi | Betaflight passthrough or Wi-Fi | Betaflight passthrough or Wi-Fi |
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| Wi-Fi antenna | Separate on-board ceramic | Separate on-board ceramic | Separate on-board ceramic | Separate on-board ceramic |
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| Dimensions | 10.0 x 11.5 mm | 10.0 x 11.5 mm | 10.0 x 17.3 mm | 17.0 x 15.7 mm |
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| PCB | 6-layer, 1.0 mm | 6-layer, 1.0 mm | 6-layer, 1.0 mm | 6-layer, 1.0 mm |
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OSHWA certified, one UID per variant:
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[Lite BE000030](https://certification.oshwa.org/be000030.html) ·
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[Lite-UFL BE000031](https://certification.oshwa.org/be000031.html) ·
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[Mono BE000032](https://certification.oshwa.org/be000032.html) ·
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[Gemini BE000033](https://certification.oshwa.org/be000033.html)
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Technical write-up, part list and layout constraints: [AGENTS.md](AGENTS.md).
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## In the line
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What pairs with what, and what is available:
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[opendrone.be](https://opendrone.be).
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## Contributing
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See [CONTRIBUTING.md](CONTRIBUTING.md).
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## License
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Hardware licensed under [CERN-OHL-S-2.0](https://ohwr.org/cern_ohl_s_v2.txt),
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see [LICENSE](LICENSE).
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