Boards / Common wiring

ESP32-S3 + ST7701S 480x480 round

480x480 RGB panel that needs a 3-wire SPI init sequence alongside the RGB bus.

At a glance


Maker	Generic
MCU	ESP32-S3 Xtensa LX7 dual-core @ 240 MHz, 512 KB SRAM (+ up to 8 MB PSRAM)
Display	Sitronix ST7701 / ST7701S, 480 x 480 px, RGB565 parallel (DPI), 16-bit colour
Touch	Hynitron CST328 (capacitive, I2C)
Backlight	GPIO 38, dimmable (PWM)
PSRAM	Yes
Graphics library	GFX Library for Arduino

ST7701 / ST7701S on RGB565 parallel (DPI): RGB colour order, inversion off.

CST328: I2C address 0x1A, 400 kHz.

Check your revision. CS/SCK/MOSI carry the ST7701 init commands only; pixels go over the RGB bus.

Choose ESP32-S3 + ST7701S 480x480 round 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.h and platformio.ini - a project that builds for this board as it comes.
The CST328 is capacitive and needs no calibration. The firmware resets it and checks it answers on every boot.
The backlight is dimmable: give a slider or a button a Set backlight action.
An RGB panel keeps its frame buffer in PSRAM, which this board has.
Screens are designed for 480 x 480 px in either orientation, with LVGL 9 or LVGL 8.

ST7701 / ST7701S. RGB data plus a 3-wire SPI init sequence. You must wire CS/SCK/MOSI as well.

CST328. Waveshare ESP32-S3 Touch LCD 2.8"/4" 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.

Nobody has published a design for this board yet. Publish yours from the designer and it appears here and in the gallery.