Boards / All-in-one boards

VIEWE UEDX48480040E-WB-A (4" 480x480)

4" 480x480 square GC9503V RGB panel with FT6336U touch, on an ESP32-S3 N16R8.

VIEWE UEDX48480040E-WB-A: a 480 by 480 panel, drawn from the preset — Drawn from the preset - no vendor photograph of this board was published.

Design a UI for this board Read the quick start

Building for it

A project is made for one toolchain, picked when you start it. For this board you can use two 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	The MicroPython export has no driver for this controller yet.
ESPHome	A GC9503V needs an init sequence written for its particular panel, and ESPHome has no model for it.
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	VIEWE
MCU	ESP32-S3 Xtensa LX7 dual-core @ 240 MHz, 512 KB SRAM (+ 2-16 MB PSRAM on most modules)
Display	Galaxycore GC9503V, 480 x 480 px, RGB565 parallel (DPI), 16-bit colour
Touch	FocalTech FT6236 / FT6336U (capacitive, I2C)
Backlight	GPIO 38, dimmable (PWM)
Memory	16 MB flash, 8 MB octal PSRAM (N16R8)
Graphics library	GFX Library for Arduino

Display pins

GC9503V on RGB565 parallel (DPI): BGR colour order, inversion off.

Signal	Pin
DE	GPIO 18
VSYNC	GPIO 17
HSYNC	GPIO 16
PCLK	GPIO 21
R0 - R4	GPIO 15, 14, 13, 12, 11
G0 - G5	GPIO 10, 9, 8, 7, 6, 5
B0 - B4	GPIO 4, 3, 2, 1, 0
CS (init only)	GPIO 39
SCK (init only)	GPIO 48
MOSI (init only)	GPIO 47
RESET	not connected
Backlight	GPIO 38

Touch pins

FT6236 / FT6336U: I2C address 0x38, 400 kHz.

Signal	Pin
SDA	GPIO 40
SCL	GPIO 41
RESET	not connected

Check your revision. Nobody at LCD Wizard has had this board: the export for it compiles and has not been seen on the panel. Every pin and timing is from VIEWE's own board support package for it (bsp_uedx48480040e_wb_a), and the GC9503V is sent that package's register load byte for byte over CS 39 / SCK 48 / MOSI 47 - GFX Library's own GC9503V loads are for other glass and leave this one black. 18 MHz, hsync pulse 32 / back porch 10 / front porch 16, vsync 12 / 15 / 3, rising edge; if the picture is unsteady, try Espressif's figures for the same board: hsync 8 / 40 / 40, vsync 2 / 4 / 16. Backlight GPIO 38, lit when high. FT6336U touch on GPIO 40/41 at 0x38, with no interrupt or reset line, so it is polled. GPIO 0 and GPIO 3 are strapping pins used as RGB data, which is safe: they are outputs only, and not driven until after boot.

Designing for it in LCD Wizard

Choose VIEWE UEDX48480040E-WB-A (4" 480x480) 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 FT6236 / FT6336U 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.

The parts

GC9503V. 480x480 RGB panel (square on the VIEWE 4"), set up over a 3-wire SPI init sequence.

FT6236 / FT6336U. Register-compatible with the FT6206. Very common on 2.8"-3.5" capacitive TFTs.

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.

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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