Waveshare ESP32-S3-Touch-LCD-1.85
1.85" 360x360 IPS LCD (ST77916, QSPI), CST816 (CST816S/T family) touch, PCM5101A (I2S DAC, no control bus) audio, TF card, QMI8658C, PCF85063A.
Affiliate link: LCD Wizard may earn a commission if you buy through it.
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 | Waveshare |
| MCU | ESP32-S3 Xtensa LX7 dual-core @ 240 MHz, 512 KB SRAM (+ 2-16 MB PSRAM on most modules) |
| Display | Sitronix ST77916, 360 x 360 px, QSPI (quad SPI), 16-bit colour |
| Touch | Hynitron CST816S (capacitive, I2C) |
| Backlight | GPIO 5, dimmable (PWM) |
| Memory | 16 MB flash, 8 MB octal PSRAM (N16R8) |
| Graphics library | GFX Library for Arduino |
Display pins
ST77916 on QSPI (quad SPI): QSPI clock 80 MHz, host SPI2_HOST, RGB colour order, inversion on.
| Signal | Pin |
|---|---|
| SCK | GPIO 40 |
| D0 - D3 | GPIO 46, 45, 42, 41 |
| CS | GPIO 21 |
| RESET | TCA9554 pin 1 |
| Backlight | GPIO 5 |
Touch pins
CST816S: I2C address 0x15, 400 kHz.
| Signal | Pin |
|---|---|
| SDA | GPIO 1 |
| SCL | GPIO 3 |
| 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)
- GPIO 7 is set high at boot - Battery power hold (GPIO 7)
- 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://files.waveshare.com/wiki/ESP32-S3-Touch-LCD-1.85/ESP32-S3-Touch-LCD-1.85-Demo.zip). SD D3/CS: the schematic's pin table and the wiki put it on Extend_IO3 (TCA9554 P2), but the Arduino demo's SD_Card.cpp toggles EXIO_PIN4 (P3, which the schematic gives to IMU_INT2).
Designing for it in LCD Wizard
- Choose Waveshare ESP32-S3-Touch-LCD-1.85 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 CST816S 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 360 x 360 px in either orientation, with LVGL 9 or LVGL 8.
The parts
ST77916. Round QSPI panel found on 1.8"-2.1" ESP32-S3 boards.
CST816S. Single touch plus gestures. Standard on 1.28" round GC9A01 modules. Needs RST wired.
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.
- 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
Waveshare ESP32-S3-Touch-LCD-1.85C1.85" 360x360 IPS LCD (ST77916, QSPI), CST816 (CST816S datasheet linked by vendor) touch, ES8311 (V2); PCM5101APWR on V1 audio, TF card, PCF85063ATL.ESP32-S3 · ST77916 360 x 360 · CST816S touchPurchase this board
Waveshare ESP32-S3-Knob-Touch-LCD-1.81.8" 360x360 round IPS LCD (ST77916, QSPI), CST816D touch, PCM5100A speaker, TF card, battery sense.ESP32-S3 · ST77916 360 x 360 · CST816S touch
Waveshare ESP32-S3-Touch-LCD-1.46B / 1.46C1.46" 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.ESP32-S3 · SPD2010 412 x 412 · SPD2010 (touch half) touchPurchase this board
Waveshare ESP32-S3-Touch-AMOLED-2.41 V22.41" 450x600 AMOLED (RM690B0, QSPI), FT6336 touch, TF card, QMI8658, PCF85063, battery sense.ESP32-S3 · RM690B0 450 x 600 · FT6236 / FT6336U touchPurchase this board
Waveshare ESP32-S3-Touch-AMOLED-2.41 V12.41" 450x600 AMOLED (RM690B0, QSPI), FT6336 touch, TF card, QMI8658, PCF85063, battery sense.ESP32-S3 · RM690B0 450 x 600 · FT6236 / FT6336U 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 boardNext
- 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