Open source ExpressLRS receiver family for FPV, part of the incutec OpenDrone line. Four variants share an ESP32-C3 core and the ExpressLRS unified firmware, and differ in radio, band, RF front end and antenna.
| Lite | Lite-UFL | Mono | Gemini | |
|---|---|---|---|---|
| Band | 2.4 GHz | 2.4 GHz | Dual band | Dual band, Xrossband |
| Radio | SX1281 | SX1281 | LR1121 | 2x LR1121 |
| Antenna | On-board ceramic | U.FL | U.FL | 2x U.FL |
| Telemetry power | 13 dBm (20 mW) | 13 dBm (20 mW) | ||
| Protocol | CRSF | CRSF | CRSF | CRSF |
| MCU | ESP32-C3 | ESP32-C3 | ESP32-C3 | ESP32-C3 |
| Input | 5 V pad | 5 V pad | 5 V pad | 5 V pad |
| Firmware | ExpressLRS | ExpressLRS | ExpressLRS | ExpressLRS |
| Flashing | Betaflight passthrough or Wi-Fi | Betaflight passthrough or Wi-Fi | Betaflight passthrough or Wi-Fi | Betaflight passthrough or Wi-Fi |
| Wi-Fi antenna | Separate on-board ceramic | Separate on-board ceramic | Separate on-board ceramic | Separate on-board ceramic |
| Dimensions | 10.0 x 11.5 mm | 10.0 x 11.5 mm | ||
| PCB | 6-layer, 1.6 mm | 6-layer, 1.6 mm | 6-layer | 6-layer |
OSHWA certified, one UID per variant: Lite BE000030 · Lite-UFL BE000031 · Mono BE000032 · Gemini BE000033
Technical write-up, part list and layout constraints: AGENTS.md.
What pairs with what, and what is available: opendrone.be.
See CONTRIBUTING.md.
Hardware licensed under CERN-OHL-S-2.0, see LICENSE.