LILYGO T-Glass

Overview

The T-Glass is one of LILYGO's most innovative products — a wearable DIY augmented reality device that uses a prism optical system to project display content as a head-up display. The 1.1-inch Full Color LTPS AMOLED (JD9613 driver) at 294x126 pixels (126x126 in alternate orientation) is reflected through the prism, creating a transparent overlay visible to the wearer.

The device is built on the ESP32-S3 FN4R2 module with 4MB flash and 2MB PSRAM, providing WiFi and Bluetooth 5 LE connectivity for wireless communication and data retrieval. Onboard sensors include an IMU for head orientation tracking, a microphone for audio input, and an RTC for timekeeping. A touch button provides basic input without requiring external controls.

Two purchasing options are available: the complete T-Glass kit (H715, $54.63) and a standalone prism component (N276, $20.98 — currently out of stock). The T-Glass GitHub repository provides example firmware for displaying time, notifications, and sensor data in the heads-up display format.

Firmware Compatibility

The T-Glass uses the Arduino IDE or ESP-IDF framework targeting the ESP32-S3. Display rendering is handled via the JD9613 driver. Example projects are available in the Xinyuan-LilyGO GitHub organization under the T-Glass repository.

Flashing Guide

1. Install Arduino IDE with ESP32-S3 board support
2. Clone the T-Glass GitHub repository for display drivers and examples
3. Connect via USB Type-C
4. Select "ESP32S3 Dev Module" with 4MB flash and appropriate PSRAM settings
5. Upload the example firmware to display content through the prism optics