LILYGO TTGO T-Watcher ESP32 Development Board
ESP32 board with a 2.2-inch 320x240 TFT display and IP5306 battery charging
The LILYGO TTGO T-Watcher is an ESP32 development board with a built-in colour TFT display, sold by LILYGO as part of its T4 family. It can be programmed with the Arduino IDE, and LILYGO publishes test code, pin maps and schematics on its GitHub (Xinyuan-LilyGO/LilyGo_Txx).
Specifications
| Microcontroller | Espressif ESP32, dual-core Xtensa LX6, up to 240MHz, 520KB SRAM |
| Memory | 8MB PSRAM ("8M" in the product name); 4MB flash |
| Wireless | 2.4GHz Wi-Fi 802.11 b/g/n, Bluetooth 4.2 (Classic and BLE) |
| Display | 2.2-inch 320x240 colour TFT, ILI9341 SPI controller |
| Storage | MicroSD card slot |
| Power | USB 5V; LiPo battery connector with IP5306 I2C power-management/charging IC |
| Interfaces | GPIO headers including I2C and UART; user buttons |
Note: LILYGO has made several revisions of this board, and details such as the USB-to-serial chip, USB connector, button count and pin assignments differ between versions. Please check the LILYGO GitHub pin map for your board revision before wiring a project.