T-Glass get it now

Overview

T-Glass is a smart wearable development board based on ESP32-S3 FN4R2 (4 MB Flash, 2 MB QSPI PSRAM). Features a 1.1-inch JD9613 LTPS AMOLED (294 × 126, visible 126 × 126), BHI260AP AI motion sensor, PCF85063A RTC, microphone, vibration motor, side touch button, side power switch, and 2 × QWIIC interfaces. Sleep current ~300 µA, touch button wakeup. 3.7 V lithium polymer battery. Suitable for smart glasses, motion tracking, and wearable notification devices. The same code repository also covers T-Wristband.

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
GlassFactory	✓		Factory test
Glass6DoF	✓		6-DoF motion sensing
GlassDeepSleep	✓		Deep sleep with wakeup
GlassHelloWorld	✓		Hello World display
GlassRtcAlarm	✓		RTC alarm example
GlassVoiceActivityDetection	✓		Voice activity detection

PlatformIO

1. Install Visual Studio Code and Python
2. Search for and install the PlatformIO IDE extension in VS Code
3. Clone the LilyGO-T-Wristband-and-T-Glass repository
4. Open platformio.ini, remove the ; from the desired src_dir = examples/Glass or examples/GlassV2 line (keep only one active)
5. Click ✓ to compile, click → to upload

Arduino

1. Install Arduino IDE
2. Add ESP32 boards URL: https://espressif.github.io/arduino-esp32/package_esp32_index.json
3. In Library Manager: install LilyGO T-Wristband and T-Glass, lvgl v8.4.0, SensorLib v0.1.8
4. In Tools → Board, configure:

Arduino IDE Setting	Value
Board	ESP32S3 Dev Module
Upload Speed	921600
USB Mode	Hardware CDC and JTAG
USB CDC On Boot	Enabled
USB Firmware MSC On Boot	Disabled
USB DFU On Boot	Disabled
CPU Frequency	240 MHz (WiFi)
Flash Mode	QIO 80 MHz
Flash Size	4MB (32Mb)
Core Debug Level	None
Partition Scheme	Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS)
PSRAM	QSPI PSRAM
Arduino Runs On	Core 1
Events Run On	Core 1

5. Click Upload

Development Platforms

1. PlatformIO
2. Arduino IDE
3. MicroPython

Video

Key Features

• ESP32-S3 FN4R2 @ 240 MHz, 4 MB Flash, 2 MB QSPI PSRAM, Wi-Fi + BT 5.0
• 1.1-inch JD9613 LTPS AMOLED, 294 × 126 px (visible 126 × 126)
• BHI260AP AI motion sensor, PCF85063A RTC
• Microphone, vibration motor, side touch button, side power switch
• Sleep current ~300 µA (touch button wakeup), 2 × QWIIC

Product Parameters

Feature	Specification
MCU	ESP32-S3 FN4R2 @ 240 MHz
Flash	4 MB
PSRAM	2 MB (QSPI)
Wi-Fi	2.4 GHz 802.11 b/g/n
Bluetooth	Bluetooth 5.0 LE
Display	1.1-inch JD9613 LTPS AMOLED, 294 × 126 (visible 126 × 126)
Motion Sensor	BHI260AP (AI smart 6-DoF)
Touch	Side touch button
RTC	PCF85063A
Audio	Microphone (MIC_CLOCK/MIC_DATA)
Vibration	Vibration motor
Battery	3.7 V lithium polymer
Sleep Current	~300 µA
USB	1 × Type-C
Expansion	2 × QWIIC (4-pin)
Buttons	RESET + BOOT + side power switch
Dimensions	140 × 67 × 111 mm

Pin Diagram

Dimension Diagram

Schematic

• T-Glass / T-Wristband Schematic

Datasheet

• ESP32-S3 Datasheet

Software Development

• LilyGO-T-Wristband-and-T-Glass GitHub Repository

Dependent Libraries

• SensorLib v0.1.8
• lvgl v8.4.0
• MadgwickAHRS

FAQ

• Q. Why does my board keep failing to upload programs? A. Hold BOOT and press RST once, release RST while still holding BOOT, then start the upload.

• Q. Screen display does not support rotation? A. The JD9613 display RAM is only half the screen size and does not support rotation. Use amoled.setRotation(0) or amoled.setRotation(2) for vertical orientation.

• Q. No serial output when powered by battery? A. Disable USB_CDC_ON_BOOT when using battery power: in Arduino Tools set USB CDC On Boot → Disabled, or add -UARDUINO_USB_CDC_ON_BOOT in PlatformIO build_flags.

Version History

Version	Release Date	Update Description
T-Glass V1	—	Initial version
T-Glass V2	—	Modified reflective prism version