The LILYGO T-Watch 2021 is an ESP32 -based programmable smartwatch designed for IoT development, smart wearables, and custom applications. Featuring a 1.3-inch capacitive touch IPS LCD screen, Wi-Fi, Bluetooth, vibration motor, and real-time clock (RTC), this device is ideal for embedded development projects.
Key Features
- ESP32 T-Micro32 Plus MCU with Wi-Fi & Bluetooth BLE 4.2 support.
- 1.3-inch round IPS capacitive touch screen (GC9A01).
- 240×240 high-resolution display for clear visuals.
- BMA423 three-axis accelerometer for motion sensing and pedometer functions.
- Vibration motor & RTC (Real-Time Clock) for enhanced functionality.
- Multiple communication interfaces: UART, SPI, I2C, CAN, I2S, SDIO.
- Supports T-U2T Flash Upload Tool for fast and easy programming.
Specifications
| Feature | Details |
|---|---|
| MCU | T-Micro32 Plus |
| Flash Memory | 4MB |
| PSRAM | 2MB |
| Wireless | Wi-Fi 802.11 b/g/n, Bluetooth BLE 4.2 |
| Bus Interfaces | UART, SPI, I2C, CAN, I2S, SDIO |
| Screen | 1.3-inch GC9A01 Capacitive Touch IPS LCD |
| Resolution | 240×240 pixels |
| Accelerometer | BMA423 (Three-axis acceleration, Pedometer) |
| Onboard Functions | RTC, Power Detection, Vibration Motor, Charging Detection |
| Programming | USB Type-C + T-U2T Flash Upload Tool |
Pin Diagram
Refference [Github]
Applications
- Smart Wearables & Custom Smartwatch Projects
- IoT & Embedded Systems Development
- Real-Time Data Monitoring & Display
- Motion Sensing & Fitness Applications
- Wireless Communication & BLE-based IoT Solutions
Package Contents
- 1 x T-WATCH-2021
- 1 x Power Cable
Note:
- No case or battery is included. Users must configure their own.
- 3D printable case files are available for custom enclosure design.
- Important Information: Due to the lack of a built-in download chip on the mainboard, the T-Watch 2021 requires a T-U2T USB downloader for flashing programs. If you don’t already have a T-U2T, you need to purchase the compatible version. If you already own a T-U2T, you only need the corresponding T-U2T series products, so there’s no need to purchase additional ones.