PCB
LIA’s main board is designed in KiCad and built around an ESP32-S3-MINI-1 module, an SX1262 LoRa transceiver, and a u-blox SAM-M10Q GNSS module.
Core components
Section titled “Core components”| Function | Part |
|---|---|
| MCU + Wi-Fi/BLE | ESP32-S3-MINI-1-N8 |
| LoRa transceiver | Wio-SX1262 |
| GNSS | u-blox SAM-M10Q |
| Power | 18650 (V1.0) or 5023450 pouch cell (V1.1) Li-ion + USB-C charging — see Battery |
Antennas
Section titled “Antennas”- YFNF868F3AM FPC LoRa antenna (868MHz), the default on-board option — or alternatively, a standard omnidirectional linear antenna for the 868/915MHz band, plugged into the same connector on the SX1262 module (see Assembly), such as Seeed’s LoRa Antenna Kit
- Ceramic GNSS patch antenna
Design files
Section titled “Design files”The full KiCad project lives under hardware/kicad/ in the repository, and a 3D model export is available at hardware/pcb/LIA_PCB.step. See Downloads for direct links.
See also: Schematics and BOM.