LILYGO T3 LoRa32 V1.6.1

Overview

The LILYGO T3 LoRa32 (also known as LORA32 or LoRa3) is a compact ESP32-based development board that integrates a Semtech SX1276/SX1278 LoRa radio and a 0.96-inch OLED display with an onboard microSD card slot. It is one of the more mature boards in LILYGO's lineup, having gone through multiple revisions, with V1.6.1 being the current stable version.

The board supports multiple LoRa frequency bands: 433MHz (SX1278), and 868/915/923MHz plus a specialized 144-148MHz variant (SX1276). This broad frequency support makes it suitable for deployments in Europe, North America, Asia-Pacific, and amateur radio VHF bands. The 0.96-inch OLED provides a simple status display, while the SD card slot allows local data logging for sensor applications.

The T3 LoRa32 is notably supported by several popular open-source firmware projects. Paxcounter uses it as a people-counting node that monitors Wi-Fi and Bluetooth probe requests. Disaster Radio turns it into an off-grid LoRa mesh network node. MySondy GO uses it for amateur radio WSPR beacon transmissions. These diverse applications demonstrate the versatility of the platform.

The board is available from LILYGO's warehouses in China, Germany (EU), and the United States, minimizing shipping times for customers worldwide.

Firmware Compatibility

• Paxcounter: Supported as a primary platform for counting people via Wi-Fi/BT probe requests. Pre-built binaries available.
• Disaster Radio: Supported for off-grid LoRa mesh networking.
• MySondy GO: Supported for 433MHz amateur radio beacon applications.
• Arduino: Fully supported with LoRa, OLED, and SD card libraries.
• ESP-IDF: Supported for custom development.

Flashing Guide

1. Install the CP2102 or CH9102 USB-to-serial driver for your operating system.
2. Connect via Micro USB cable.
3. For Paxcounter: follow the installation guide at https://github.com/cyberman54/ESP32-Paxcounter and select the TTGO_T3 board target.
4. For Arduino: install the ESP32 board support package, then use the "ESP32 Dev Module" board setting. Install the LoRa library by Sandeep Mistry and configure it for your frequency band.
5. Hold the BOOT button while pressing RST if the device does not enter download mode automatically.