Boards / All-in-one boards

Waveshare ESP32-S3-Touch-LCD-1.46B / 1.46C

1.46" round 412x412 IPS LCD (SPD2010, QSPI), SPD2010 (integrated touch) touch, PCM5101 speaker and I2S microphone, TF card, QMI8658, PCF85063, battery sense. The 1.46B and 1.46C are the same board; the C has a wider cover glass.

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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 has no driver for this 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	Waveshare
MCU	ESP32-S3 Xtensa LX7 dual-core @ 240 MHz, 512 KB SRAM (+ 2-16 MB PSRAM on most modules)
Display	Solomon Systech SPD2010, 412 x 412 px, QSPI (quad SPI), 16-bit colour
Touch	Solomon Systech SPD2010 (touch half) (capacitive, I2C)
Backlight	GPIO 5, dimmable (PWM)
Memory	16 MB flash, 8 MB octal PSRAM (N16R8)
Graphics library	GFX Library for Arduino

Display pins

SPD2010 on QSPI (quad SPI): QSPI clock 40 MHz, host SPI2_HOST, RGB colour order, inversion off.

Signal	Pin
SCK	GPIO 40
D0 - D3	GPIO 46, 45, 42, 41
CS	GPIO 21
RESET	TCA9554 pin 1
Backlight	GPIO 5

Touch pins

SPD2010 (touch half): I2C address 0x53, 400 kHz, shares the display bus.

Signal	Pin
SDA	GPIO 11
SCL	GPIO 10
INT / IRQ	GPIO 4
RESET	TCA9554 pin 0

Also on the board

I2C (GPIO 11 / 10) - SDA GPIO 11, SCL GPIO 10
TCA9554 I/O expander at 0x20, driving the lines marked above
IMU - QMI8658, at 0x6B, on I2C (GPIO 11 / 10)
RTC - PCF85063, at 0x51, on I2C (GPIO 11 / 10)
SDCard - SD card, CLK GPIO 14, CMD GPIO 17, D0 GPIO 16
GPIO 7 is set high at boot - Battery power hold (GPIO 7)
TCA9554 pin 2 is set high at boot - SD card D3 held high (EXIO3)
Battery - analog input on GPIO 8
BOOTButton - input on GPIO 0
PWRKey BATButton - input on GPIO 6

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-S3-Touch-LCD-1.46/tree/main/example). The -B is the ESP32-S3-Touch-LCD-1.46 PCB sold with cover-glass options (SKUs 'without cover glass' / 'with protective cover glass' / 'widened'); its wiki links the 1.46 schematic and has no demo of its own, so the 1.46 GitHub repo was used. The 1.46C is this PCB with a widened cover glass. Speaker (PCM5101: BCLK 48, LRCK 38, DOUT 47), microphone (I2S: BCK 15, WS 2, DIN 39, right slot), SD card (SDMMC 1-bit: CLK 14, CMD 17, D0 16, with D3 on EXIO3), battery sense (GPIO 8, divide by three) and the battery power hold (GPIO 7) are from the same example and schematic. The touch panel reports upright (LVGL_Driver.cpp passes its x and y through).

Designing for it in LCD Wizard

Choose Waveshare ESP32-S3-Touch-LCD-1.46B / 1.46C 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 SPD2010 (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 412 x 412 px in either orientation, with LVGL 9 or LVGL 8.

The parts

SPD2010. Round 412x412 touch-and-display chip on QSPI. Turned, it is drawn a whole frame at a time, so it needs PSRAM.

SPD2010 (touch half). The touch half of the SPD2010 touch-and-display chip (Waveshare ESP32-S3-Touch-LCD-1.46).

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.

Designs for this board

Two-way Radio: Round HandsetA push-to-talk radio on a round 1.46-inch ESP32-S3 touchscreen. Hold the big button and speak, and the board i...by jonathan harrocks

Clone any of them into the designer, or see every design for this board in the gallery.

From the blog

Two ESP32 screens, one button: we built a walkie-talkie with no routerPair two boards, hold to talk, hear it on the other. No router, no app, no internet.22 October 2026

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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