LilyGO · ESP32-S3 · 2.1" · 480×480
LilyGO T-RGB 2.1" round specifications
The LilyGO T-RGB 2.1" round is a 2.1" 480×480 display board by LilyGO, built around the ESP32-S3 (ESP32-S3R8 module) running at 240 MHz. The panel uses a RGB Parallel (RGB666 wiring, RGB565 control) controller over RGB565 Parallel (DPI), with CST820 OR GT911 (I2C, hardware-dependent — auto-detected) touch input. Memory: 16 MB flash, 8 MB PSRAM; wireless: Wi-Fi and Bluetooth. In LCD Ultra Pro you can design its UI visually at the exact resolution; a ready-made display driver for the Arduino export is not available yet, so the export contains the LVGL UI code for your own project.
- Screen
- 2.1" · 480×480
- Chip
- ESP32-S3
- Memory
- 16 MB flash, 8 MB PSRAM
- Input
- capacitive touch
Specifications
| Manufacturer | LilyGO |
|---|---|
| Screen size | 2.1" |
| Resolution | 480×480 px |
| Colour depth | 16-bit |
| Display controller | RGB Parallel (RGB666 wiring, RGB565 control) |
| Display interface | RGB565 Parallel (DPI) |
| Touch | CST820 OR GT911 (I2C, hardware-dependent — auto-detected) |
| Microcontroller | ESP32-S3 |
| Module | ESP32-S3R8 |
| CPU clock | 240 MHz |
| Internal SRAM | 512 KB |
| PSRAM | 8 MB |
| Flash | 16 MB |
| Wi-Fi | Yes |
| Bluetooth | Yes |
Free GPIOs and connectors
These GPIOs are not used by the display, touch or on-board peripherals, so you can wire your own sensors, buttons or relays to them.
| Pin | Capabilities | Note |
|---|---|---|
| GPIO 0 | GPIO, BOOT | Boot button |
| GPIO 1 | GPIO | TOUCH_IRQ/TOUCH_RST appears here in the source, likely reserved on some touch variants |
| GPIO 19 | GPIO, USB_DM | USB D- |
| GPIO 20 | GPIO, USB_DP | USB D+ |
LVGL support in LCD Ultra Pro
| Driver status | Driver not available yet |
|---|---|
| Arduino export | LVGL 8.4 UI and event code only (bring your own display driver) |
| USB Live preview | No |
| Orientations | 0° |
| Brightness control | Software dimming layer |
Pick this board in the editor and the canvas matches its exact resolution and shape. Build the interface with widgets, add events without code, try it in Live Preview, then export it as LVGL UI code. See the documentation for the workflow.
Frequently asked questions
What is the resolution of the LilyGO T-RGB 2.1" round?
480×480 pixels on a 2.1" screen, driven at 16-bit colour depth.
Which display controller and interface does it use?
RGB Parallel (RGB666 wiring, RGB565 control) over RGB565 Parallel (DPI).
Does the LilyGO T-RGB 2.1" round have a touchscreen?
Yes — CST820 OR GT911 (I2C, hardware-dependent — auto-detected).
Which ESP32 chip and how much memory does it have?
ESP32-S3 (ESP32-S3R8) at 240 MHz, 16 MB flash, 8 MB PSRAM.
Which GPIOs are free for my own sensors or relays?
4 GPIOs are free: GPIO 0, GPIO 1, GPIO 19, GPIO 20.
Can I use LVGL on the LilyGO T-RGB 2.1" round?
Yes, with your own display driver setup. In LCD Ultra Pro you can design the UI at the board’s exact resolution and export the LVGL 8.4 UI and event code; a ready-made display driver for this board is not included yet, so you call ui_init() from your own LVGL project.