LILYGO T3 TCXO
ESP32 LoRa development board with a Temperature Compensated Crystal Oscillator (TCXO) for enhanced LoRa frequency stability, 0.96-inch SSD1306 OLED display, 4MB Flash, WiFi, BLE 4.2, TF card slot, and LiPo battery support at 868/915MHz.
$22.88
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Specifications
Components
Dual-core Xtensa LX6 at 240MHz with 520KB SRAM, WiFi, and Bluetooth 4.2.
0.96-inch monochrome OLED at 128×64 resolution via I2C (SDA IO21, SCL IO22).
Semtech SX1276 LoRa transceiver with Temperature Compensated Crystal Oscillator for improved frequency stability across temperature ranges.
Bus Interfaces
Overview
The LILYGO T3 TCXO is an ESP32-based LoRa development board that incorporates a Temperature Compensated Crystal Oscillator (TCXO) to deliver superior frequency accuracy and stability for the onboard LoRa radio. Standard crystal oscillators drift with temperature changes, which degrades LoRa link reliability in outdoor or variable-temperature deployments — the TCXO eliminates this drift. The board features a 0.96-inch SSD1306 OLED display (128×64, I2C on IO21/IO22), 4MB Flash, WiFi 802.11 b/g/n, and Bluetooth 4.2/BLE. It supports USB or 3.7V LiPo battery power with a battery switch, and includes a TF card slot and Reset/Boot buttons. Available in 868MHz and 915MHz variants, it is well-suited for long-range Meshtastic nodes and precision LoRaWAN deployments that require stable RF performance across temperature extremes.
Use Cases
5LoRa Mesh Networking
Building off-grid mesh communication networks using LoRa radio for text messaging, location sharing, and sensor data relay without cellular or internet infrastructure.
Off-Grid Communication
Text messaging and data exchange in areas without cellular or internet coverage.
IoT
Internet of Things applications including connected sensors, actuators, and smart devices that communicate over WiFi, BLE, LoRa, or other wireless protocols.
Environmental Monitoring
Monitoring environmental conditions like temperature, humidity, air quality, and weather data using remote sensors.
LoRa Messenger
Build an off-grid text messaging device using LoRa for range and low power.
Where to Buy
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