Waveshare ESP32-P4-WIFI6-Touch-LCD-3.5
3.5" 320x480 IPS LCD (ST7796, SPI), FT6336 touch, ES8311 audio, TF card, AXP2101.
Building for it
A project is made for one toolchain, picked when you start it. For this board you can use one of them:
| Toolchain | |
|---|---|
| Arduino (C++) | Every board, every widget and every peripheral here. The most control, and the most to set up. Start a project |
| MicroPython | lvgl_micropython has no build for this chip. |
| ESPHome | The ESP32-P4 is only useful here with a MIPI-DSI panel, which this export does not write yet. |
At a glance
| Part | Detail |
|---|---|
| Maker | Waveshare |
| MCU | ESP32-P4 RISC-V dual-core @ 400 MHz, 768 KB SRAM (+ PSRAM) |
| Display | Sitronix ST7796 / ST7796S, 320 x 480 px, SPI (4-wire serial), 16-bit colour |
| Touch | FocalTech FT6236 / FT6336U (capacitive, I2C) |
| Backlight | GPIO 28, dimmable (PWM) |
| Memory | 16 MB flash, 32 MB PSRAM (N16R32) |
| Graphics library | GFX Library for Arduino |
Display pins
ST7796 / ST7796S on SPI (4-wire serial): SPI clock 80 MHz, host SPI2_HOST, BGR colour order, inversion on.
| Signal | Pin |
|---|---|
| SCK / CLK | GPIO 21 |
| MOSI / SDA | GPIO 20 |
| CS | GPIO 23 |
| DC / RS | GPIO 26 |
| RESET | GPIO 27 |
| Backlight | GPIO 28 |
Touch pins
FT6236 / FT6336U: I2C address 0x38, 400 kHz, shares the display bus.
| Signal | Pin |
|---|---|
| SDA | GPIO 7 |
| SCL | GPIO 8 |
| INT / IRQ | GPIO 50 |
| RESET | GPIO 29 |
Also on the board
- I2C (GPIO 7 / 8) - SDA GPIO 7, SCL GPIO 8
The preset adds these to the Hardware tab with the board, so a sensor can go straight onto the connector.
Check your revision. Pins from Waveshare's demo code and schematic (https://github.com/waveshareteam/ESP32-P4-WIFI6-Touch-LCD-3.5). BSP comment says touch reset is 'Shared with LCD reset' but its own define and the schematic give TP_RST = GPIO29, separate from LCD_RST GPIO27; chose 29.
Designing for it in LCD Wizard
- Choose Waveshare ESP32-P4-WIFI6-Touch-LCD-3.5 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 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.
- 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
ST7796 / ST7796S. The usual 4.0" 320x480 controller. Faster than ILI9488 over SPI (true RGB565).
FT6236 / FT6336U. Register-compatible with the FT6206. Very common on 2.8"-3.5" capacitive TFTs.
ESP32-P4. Has a MIPI-DSI host and a 2D graphics accelerator (PPA). Arduino core support is newer - verify your core version.
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
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)
- Waveshare demo code (pins read from here)
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.
Similar boards
WT32-SC013.5" 320x480 ST7796 over SPI with FT6336U capacitive touch.ESP32 · ST7796 / ST7796S 320 x 480 · FT6236 / FT6336U touch
WT32-SC01 Plus3.5" 320x480 ST7796 on an 8-bit i80 bus with FT6336U touch. Much faster than the SPI original.ESP32-S3 · ST7796 / ST7796S 320 x 480 · FT6236 / FT6336U touch
Waveshare ESP32-Touch-LCD-3.53.5" 320x480 IPS LCD (ST7796S, SPI), FT6336U touch, ES8311 audio, TF card, AXP2101, PCF85063.ESP32 · ST7796 / ST7796S 320 x 480 · FT6236 / FT6336U touchNext
- 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