LILYGO T-Deck

Overview

The LILYGO T-Deck is a fully self-contained pocket-sized ESP32-S3 handheld device that packs a compelling set of features into a compact enclosure. At its core is the ESP32-S3FN16R8 processor with 16MB flash and 8MB PSRAM, paired with a 2.8-inch ST7789 SPI IPS LCD display at 320x240 resolution.

The T-Deck distinguishes itself with its integrated mini QWERTY keyboard and trackball, making it one of the most complete handheld development platforms available. It also includes a built-in microphone and speaker for audio applications, and optionally an SX1262 LoRa transceiver (+22dBm) for long-range wireless communication in 433 MHz, 868 MHz, or 915 MHz bands.

Available in white and black color options, with or without LoRa, the T-Deck targets LoRaWAN devices, mesh networking nodes, portable terminals, walkie-talkie-like communicators, and general-purpose handheld IoT devices. The battery ADC on IO04 supports monitoring an external battery.

Firmware Compatibility

• Arduino IDE: Supported via Espressif Arduino core for ESP32-S3.
• PlatformIO: Recommended build environment with full ESP32-S3 support.
• MicroPython: Available via the official ESP32-S3 MicroPython firmware.
• ESP-IDF: Native Espressif framework.

Reference implementations and factory firmware are available at the T-Deck GitHub repository.

Flashing Guide

1. Connect the T-Deck via USB-C cable.
2. Enter bootloader mode by holding the trackball button (BOOT) while pressing RESET.
3. In Arduino IDE, select ESP32S3 Dev Module with 16MB flash, OPI PSRAM.
4. Upload your sketch, then press RESET.
5. For LoRa-enabled variants, the SX1262 is accessible via SPI — initialize it with the RadioLib or LoRa library specifying the correct SPI pins for the T-Deck.

Package Contents: 1x T-Deck unit, 1x 6-pin connector, 1x power cable. LoRa variants include the SX1262 module installed.