Boards / All-in-one boards

Guition JC3248W535 (3.5" capacitive, ESP32-S3)

3.5" 320x480 AXS15231B over QSPI with touch in the same chip, ESP32-S3 with 16 MB flash and 8 MB PSRAM, a TF card, an I2S speaker amplifier and battery charging.

The Guition JC3248W535 board — Photograph: Guition · vendor product photo, no licence stated

Design a UI for this board Test my board Read the quick start

Building for it

A project is made for one toolchain, picked when you start it. All four can drive this board:

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	No compiler to install, and the panel can join Home Assistant as real entities. Start a project
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	Guition
MCU	ESP32-S3 Xtensa LX7 dual-core @ 240 MHz, 512 KB SRAM (+ 2-16 MB PSRAM on most modules)
Display	Astra AXS15231B, 320 x 480 px, QSPI (quad SPI), 16-bit colour
Touch	Astra AXS15231B (touch half) (capacitive, I2C)
Backlight	GPIO 1, dimmable (PWM)
Memory	16 MB flash, 8 MB octal PSRAM (N16R8)
Graphics library	GFX Library for Arduino

Display pins

AXS15231B on QSPI (quad SPI): QSPI clock 40 MHz, host SPI2_HOST, RGB colour order, inversion off.

Signal	Pin
SCK	GPIO 47
D0 - D3	GPIO 21, 48, 40, 39
CS	GPIO 45
RESET	not connected
Backlight	GPIO 1

Touch pins

AXS15231B (touch half): I2C address 0x3B, 400 kHz.

Signal	Pin
SDA	GPIO 4
SCL	GPIO 8
INT / IRQ	GPIO 3
RESET	not connected

Also on the board

SDCard - SD card, CLK GPIO 12, CMD GPIO 11, D0 GPIO 13
Battery - analog input on GPIO 5
Boot Button - input on GPIO 0

The preset adds these to the Hardware tab with the board, so a sensor can go straight onto the connector.

Check your revision. From Guition's own Arduino BSP for the board and its V1.0 schematic: the AXS15231B on QSPI (CS 45, CLK 47, D0-D3 21, 48, 40, 39, no reset line, TE 38), started with Guition's own register table; backlight GPIO 1, lit high; touch inside the same chip at 0x3B on SDA 4, SCL 8, INT 3, polled; the TF card as SD_MMC with one data line (CLK 12, CMD 11, D0 13); an I2S speaker amplifier (BCLK 42, LRCK 2, data 41) that is always on; the battery on GPIO 5 through 33K over 100K; BOOT on GPIO 0. The panel ignores the row address over QSPI, so the export draws whole frames from a canvas in PSRAM. USB-C goes straight to the S3, so the serial log needs USB CDC On Boot (the export sets it); the UART is on header P1 (TX 43, RX 44). The schematic labels TP_SCL and TP_SDA the other way round: GPIO 8 is the clock. Header P2 has GPIO 5, 6, 7, 15, 16, 46, 9 and 14 (5 is the battery reading, 46 a strapping pin); P3 and P4 have GPIO 17 and 18. The battery reading is scaled from typical ADC figures - check it against a meter.

Designing for it in LCD Wizard

Choose Guition JC3248W535 (3.5" capacitive, ESP32-S3) 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 AXS15231B (touch half) 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.
With PSRAM the LVGL memory pool can live there, leaving internal RAM for everything else.
Screens are designed for 320 x 480 px in either orientation, with LVGL 9 or LVGL 8.

The parts

AXS15231B. Combined display + capacitive touch controller. Touch shares the same part. Drawn a whole frame at a time, so it needs PSRAM.

AXS15231B (touch half). The same silicon as the AXS15231B display controller; touch is read over I2C.

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.

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.

Waveshare ESP32-S3-Touch-LCD-3.5B3.5" 320x480 AXS15231B over QSPI with touch in the same chip, an ES8311 codec with a microphone and speaker output, IMU, RTC, battery charging, a TF card and a camera connector.ESP32-S3 · AXS15231B 320 x 480 · AXS15231B (touch half) touchPurchase this board

Waveshare ESP32-S3-Touch-LCD-3.493.49" 172x640 IPS LCD (AXS15231B, QSPI), AXS15231B (integrated touch) touch, ES8311 speaker and ES7210 microphones, TF card, QMI8658, PCF85063, battery sense.ESP32-S3 · AXS15231B 172 x 640 · AXS15231B (touch half) touchPurchase this board

Guition ESP32-4848S040, relay version (4" 480x480)4" 480x480 square ST7701 panel with GT911 touch and three relays, sold as the "86 box" wall-plate unit.ESP32-S3 · ST7701 / ST7701S 480 x 480 · GT911 touch

Guition ESP32-4848S040, speaker version (4" 480x480)4" 480x480 square ST7701 panel with GT911 touch and an NS4168 I2S speaker amplifier, the "86 box" wall-plate unit.ESP32-S3 · ST7701 / ST7701S 480 x 480 · GT911 touch

LilyGO T-Display-S3 AMOLED1.91" 240x536 RM67162 AMOLED over QSPI with CST226SE touch.ESP32-S3 · RM67162 240 x 536 · CST226SE touchPurchase this board

LCDWIKI 3.5" ESP32-S3 (ES3C35P)3.5" 320x480 ST77922 over QSPI with touch in the same chip, an ES8311 codec with microphone and speaker output, a WS2812 LED, a 4-bit SD slot and battery charging.ESP32-S3 · ST77922 320 x 480 · ST77922 (touch half) touchPurchase this board

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