OpenELAB LoRa Node
Overview
The OpenELAB LoRa Node is a ready-to-use Meshtastic/LoRaWAN development board based on ESP32-S3 with integrated SX1262 LoRa radio. Designed for quick deployment of mesh sensor networks, GPS tracking, and long-range IoT applications.
Features
- ESP32-S3 dual-core MCU @ 240 MHz
- Semtech SX1262 LoRa radio (868/915 MHz)
- Integrated GPS (u-blox M10)
- 18650 battery holder with charging circuit
- 0.96 inch OLED display
- USB-C for power and programming
- Pre-flashed with Meshtastic firmware
Specifications
| Parameter | Value |
|---|---|
| MCU | ESP32-S3, Xtensa LX7, 240 MHz |
| RAM | 512 KB SRAM + 8 MB PSRAM |
| Flash | 16 MB |
| LoRa Radio | SX1262, 868/915 MHz |
| Max TX Power | +22 dBm |
| GPS | u-blox M10, -167 dBm sensitivity |
| Display | 0.96 inch OLED, 128x64 |
| Battery | 18650 Li-Ion (not included) |
| Charging | USB-C, 5V 1A, TP4056 |
| Dimensions | 85 x 52 x 20 mm |
| Weight | 65 g (without battery) |
Quick Start
With Meshtastic (Pre-loaded)
- Insert 18650 battery (or power via USB-C)
- Long-press the user button — device enters Meshtastic mode
- Connect via the Meshtastic app (Android/iOS) over Bluetooth
- Configure channel and region on first use
With Arduino IDE
- Add ESP32 board URL in Arduino IDE preferences
- Select board: ESP32-S3 Dev Module
- Install libraries: RadioLib, U8g2, TinyGPS++
- See ESP32 Getting Started
Usage / Example Code
#include <RadioLib.h>
SX1262 radio = new Module(8, 14, 12, 13);
void setup() {
radio.begin(868.0, 125.0, 9, 7, 0x12, 20, 8);
}
void loop() {
radio.transmit("Hello LoRa!");
delay(5000);
}
Applications
- Meshtastic community mesh node
- Remote environmental sensor (temp/humidity/air quality)
- GPS tracker for outdoor assets
- LoRaWAN end-device with TTN/Helium
- Educational LoRa mesh networking lab
Resources
- Schematic (PDF): Schematic and 3D files will be linked here when published.
- 3D enclosure (STL): Schematic and 3D files will be linked here when published.
- Meshtastic firmware: flasher.meshtastic.org
- Arduino pinout diagram: Schematic and 3D files will be linked here when published.
Related Products
Support / Where to Buy
- openelab.io — search "LoRa Node"
- Forum — technical questions