LILYGO T3S3 LoRa Development Board SX1262 868MHz

The LILYGO T3 S3 is a compact development board that combines an ESP32-S3 microcontroller with a Semtech SX1262 LoRa transceiver on the EU868 frequency band. It is aimed at developers who need low-power, long-range IoT connections with the convenience of a fully integrated Wi-Fi and Bluetooth 5.0 platform. The onboard 0.96-inch OLED display allows direct viewing of measurements, status messages, or connection information without external hardware. Thanks to official Meshtastic support, it is also suitable as a node in decentralized mesh networks.

Features:

• ESP32-S3FH4R2 dual-core processor with 4 MB flash, 2 MB PSRAM, 2.4 GHz Wi-Fi and Bluetooth 5.0 provides a powerful base for complex IoT applications
• Semtech SX1262 LoRa transceiver at 868 MHz enables low-power long-range communication over several kilometers in open areas
• Onboard 0.96-inch OLED display (SSD1306, 128 × 64 px, I2C) for direct visualization of sensor and connection data without additional hardware
• MicroSD card slot (SPI) for extended data storage logging as well as two Qwiic I2C sockets and UART for plug-and-play sensor expansions without soldering
• Full compatibility with Arduino IDE, PlatformIO, ESP-IDF, MicroPython, and RadioLib as well as official Meshtastic firmware support
• Compact size of 66 × 36 × 14 mm with USB-C interface, LiPo battery connector, BOOT/RST buttons, and clearly labeled GPIO pins

Application Examples:

• Meshtastic node for decentralized mesh communication without internet connection in outdoor and emergency scenarios
• LoRaWAN sensor node for environmental and agricultural monitoring with direct data display on the OLED screen
• Datalogging station with MicroSD storage of sensor measurements via LoRa reception from the field
• Prototyping IoT gateways and edge devices with Wi-Fi, Bluetooth, and LoRa on a single board
• Educational and learning projects for LoRa/LoRaWAN protocols thanks to Arduino and MicroPython support with numerous example codes

Board Pinout:

Documentation:

• LILYGO Wiki – T3 S3
• GitHub – LilyGo LoRa Series Repository

Technical Specifications:

• Manufacturer: LILYGO
• Manufacturer SKU: H595
• MCU: ESP32-S3FH4R2 (Dual-Core Xtensa LX7)
• Flash: 4 MB (Quad-SPI)
• PSRAM: 2 MB (Quad-SPI)
• Wi-Fi: 2.4 GHz IEEE 802.11 b/g/n
• Bluetooth: 5.0 (BLE)
• LoRa Chip: Semtech SX1262
• LoRa Frequency Band: 868 MHz (EU868)
• Display: 0.96" OLED, 128 × 64 px, SSD1306, I2C
• MicroSD: Yes (SPI)
• USB: USB-C (Power + Programming + OTG)
• Battery Connector: JST (3.7 V LiPo)
• GPIO Header: 2.54 mm, 2×13
• Expansion Interfaces: 2× Qwiic (I2C), UART (via Qwiic), SPI (SD), SMA (LoRa Antenna)
• LoRa SPI Pins: SCK GPIO5, MISO GPIO3, MOSI GPIO6, CS GPIO7, RST GPIO8, DIO1 GPIO33, BUSY GPIO34
• I2C Pins: SDA GPIO18, SCL GPIO17
• Buttons: BOOT (GPIO0), RST
• LED: GPIO37
• Supported Development Environments: Arduino IDE, PlatformIO, ESP-IDF, MicroPython
• Product Dimensions: 66 × 36 × 14 mm
• Package Dimensions: 76 × 45 × 29 mm
• Gross Weight: 31 g

Package Contents:

• 1× LILYGO T3S3 LoRa Development Board SX1262 868 MHz
• 1× 868 MHz LoRa Antenna
• 1× Pin Header Set (2.54 mm)
• 1× JST Battery Cable