T-Display Bar get it now

Overview

LILYGO T-Display Bar is a highly integrated embedded smart display module based on ESP32-S3-R8 (16 MB Flash, 8 MB OPI PSRAM). Features a 2.25-inch ST7789 IPS LCD (76 × 284) with CST816 capacitive touch, BHI260AP AI six-axis IMU (accelerometer + gyroscope), active buzzer, TF card slot, and 2 × QWIIC interfaces. Compact design (69 × 23 × 15 mm) suitable for both industrial deployment and portable devices.

Quick Start

Example Support

Example	PlatformIO/Arduino	ESP-IDF	Description
T-Display-Bar	✓		Display, IMU, BQ27220, RTC, sleep examples

PlatformIO

1. Install Visual Studio Code and Python
2. Search for and install the PlatformIO IDE extension in VS Code
3. Open the T-Display-Bar project folder
4. Open platformio.ini and select your example
5. Click ✓ to compile, connect via USB-C, click → to upload

Arduino

1. Install Arduino IDE
2. Install Arduino ESP32
3. In Tools → Board, configure:

Arduino IDE Setting	Value
Board	ESP32S3 Dev Module
Port	Your port
USB CDC On Boot	Enable
CPU Frequency	240 MHz (WiFi)
Core Debug Level	None
USB DFU On Boot	Disable
Erase All Flash Before Sketch Upload	Disable
Events Run On	Core1
Flash Mode	QIO 80 MHz
Flash Size	16MB (128Mb)
Arduino Runs On	Core1
USB Firmware MSC On Boot	Disable
Partition Scheme	8M with spiffs (3M APP/1.5MB SPIFFS)
PSRAM	OPI PSRAM
Upload Mode	UART0/Hardware CDC
Upload Speed	921600
USB Mode	CDC and JTAG

4. Click Upload

Development Platforms

1. Arduino IDE
2. PlatformIO
3. MicroPython

Video

Key Features

• ESP32-S3-R8 dual-core LX7 @ 240 MHz, Wi-Fi + Bluetooth 5.0
• 2.25-inch ST7789 IPS LCD (76 × 284), CST816 capacitive touch
• BHI260AP AI six-axis IMU (accelerometer + gyroscope)
• Active buzzer, TF card slot, 2 × QWIIC interfaces
• 2.54 mm 13-pin header, JST battery connector
• 69 × 23 × 15 mm

Product Parameters

Feature	Specification
MCU	ESP32-S3-R8 @ Dual-core LX7, 240 MHz
Flash	16 MB
PSRAM	8 MB (OPI PSRAM)
Wi-Fi	2.4 GHz 802.11 b/g/n
Bluetooth	Bluetooth 5.0 LE
Display	2.25-inch ST7789 IPS LCD, 76 × 284
Touch	CST816 capacitive, I²C
Sensor	BHI260AP six-axis IMU (AI sensor)
Buzzer	Active buzzer
Storage	TF card slot
USB	1 × Type-C (USB + OTG)
Expansion	2 × QWIIC + 2.54 mm 13-pin header + JST battery
Buttons	RST + BOOT + IO38 + Sleep
Dimensions	69 × 23 × 15 mm

Pin Diagram

Pin Mapping

TFT (SPI)	IO6 (MOSI), IO7 (SCLK), IO8 (CS), IO5 (DC), IO40 (RST), IO15 (BL)
Touch (CST816)	IO2/IO3 (SDA/SCL), IO21 (IRQ), IO1 (RST)
BHI260AP	IO2/IO3 (SDA/SCL), IO18 (IRQ), IO17 (RST), IO16 (EN)
SD (SPI)	IO12 (MOSI), IO13 (MISO), IO14 (SCK), IO11 (CS)
Buzzer	IO9
Buttons	IO38 (Button1), IO0 (Button2/BOOT)

Dimension Diagram

Schematic

• T-Display-Bar V1.1 Schematic

Datasheet

• ESP32-S3 Datasheet

Software Development

• T-Display-Bar GitHub Repository

Dependent Libraries

• TFT_eSPI
• lvgl
• SensorsLib
• XPowersLib
• ESP32-BLE-Mouse
• ArduinoJson
• MadgwickAHRS

FAQ

• Q. Why does my board keep failing to upload programs? A. Hold down the BOOT button and try uploading again.

• Q. Why is there no serial data output from the Uart interface? A. The project defaults to USB CDC as Uart0. Set USB CDC On Boot to Disabled in Arduino Tools, or change -DARDUINO_USB_CDC_ON_BOOT=true to false in platformio.ini.

Version History

Version	Release Date	Update Description
T-Display Bar V1.1	—	Initial version