LilyGO T-Display-S3 AMOLED
1.91" 240x536 RM67162 AMOLED over QSPI with CST226SE touch.
Building for it
A project is made for one toolchain, picked when you start it. For this board you can use three of the four:
| Toolchain | |
|---|---|
| Arduino (C++) | Every board, every widget and every peripheral here. The most control, and the most to set up. Start a project |
| MicroPython | Change a screen by editing a file on the board. No compiler once it is flashed. Start a project |
| ESPHome | ESPHome ships the RM690B0, which is a different controller. |
| ESP-IDF (C) | Espressif's own framework: esp_lcd, the component registry and idf.py, with nothing of Arduino in it. Start a project |
At a glance
| Part | Detail |
|---|---|
| Maker | LilyGO |
| MCU | ESP32-S3 Xtensa LX7 dual-core @ 240 MHz, 512 KB SRAM (+ 2-16 MB PSRAM on most modules) |
| Display | Raydium RM67162, 240 x 536 px, QSPI (quad SPI), 16-bit colour |
| Touch | Hynitron CST226SE (capacitive, I2C) |
| Backlight | None: the panel is its own light, dimmed by a command |
| Memory | 16 MB flash, 8 MB octal PSRAM (N16R8) |
| Graphics library | GFX Library for Arduino |
Display pins
RM67162 on QSPI (quad SPI): QSPI clock 75 MHz, host SPI2_HOST, RGB colour order, inversion off.
| Signal | Pin |
|---|---|
| SCK | GPIO 47 |
| D0 - D3 | GPIO 18, 7, 48, 5 |
| CS | GPIO 6 |
| RESET | GPIO 17 |
Touch pins
CST226SE: I2C address 0x5A, 400 kHz.
| Signal | Pin |
|---|---|
| SDA | GPIO 3 |
| SCL | GPIO 2 |
| INT / IRQ | GPIO 21 |
| RESET | not connected |
Also on the board
- GPIO 38 is set high at boot - AMOLED power enable
The preset adds these to the Hardware tab with the board, so a sensor can go straight onto the connector.
Check your revision. GPIO 38 switches the AMOLED's power and must be HIGH before the panel is reset; the generated code does this for you. Brightness is set by a controller command, not a backlight GPIO.
Designing for it in LCD Wizard
- Choose LilyGO T-Display-S3 AMOLED on the Hardware tab (or use the button above) and every pin on this page is filled in. The export writes the sketch,
lcd_pins.h, the GFX Library for Arduino configuration,lv_conf.handplatformio.ini- a project that builds for this board as it comes. - The CST226SE is capacitive and needs no calibration. The firmware resets it and checks it answers on every boot.
- The panel has no backlight pin: it is its own light, and its brightness is a command. Give a slider or a button a Set backlight action and it dims as a backlight would.
- With PSRAM the LVGL memory pool can live there, leaving internal RAM for everything else.
- Screens are designed for 240 x 536 px in either orientation, with LVGL 9 or LVGL 8.
The parts
RM67162. LilyGO T-Display-S3 AMOLED and Waveshare's 1.91" boards.
CST226SE. Used on LilyGO T-Display AMOLED and several round AMOLED boards.
ESP32-S3. The only common Arduino target with a hardware RGB565 LCD peripheral. PSRAM is effectively required for RGB panels.
GFX Library for Arduino. Moshi Liu's library. Best QSPI/AMOLED and RGB coverage. Configured in code.
The pinout on one page
Every pin above, laid out to print and keep beside the bench. Generated from this preset, so it says exactly what the designer writes into lcd_pins.h.
Download the pinout (PNG)Open it as SVG
The same pins as data - board.json and pins.csv - are in the open pinout dataset on GitHub, free to reuse under CC BY 4.0.
From the people who made it
The board’s own documentation. Pinouts on vendor pages do sometimes disagree with the hardware in front of you - where this page and that one differ, trust your board and tell us.
- The vendor’s product page
- Vendor documentation
- Schematic (PDF)
- RM67162 AMOLED driver datasheet (in the vendor repo)
- LilyGo-display-library (vendor GitHub)
Designs for this board
Nobody has published a design for this board yet. Publish yours from the designer and it appears here and in the gallery.
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- Quick start - from an empty screen to firmware on the board
- Boards and displays - presets, controllers, pins and touch in the designer
- Flashing and configuration - PlatformIO, the Arduino IDE and first-boot checks
- Troubleshooting - a white screen, mirrored image or touch that misses