Waveshare ESP32-S3-Touch-LCD-1.85C
1.85" 360x360 IPS LCD (ST77916, QSPI), CST816 (CST816S datasheet linked by vendor) touch, ES8311 (V2); PCM5101APWR on V1 audio, TF card, PCF85063ATL.
Building for it
A project is made for one toolchain, picked when you start it. For this board you can use 2 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 | The MicroPython export drives SPI panels only. |
| ESPHome | No compiler to install, and the panel can join Home Assistant as real entities. 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 | TCA9554PWR pin 2 |
| Backlight | GPIO 5 |
Touch pins
CST816S: I2C address 0x15, 400 kHz, shares the display bus.
| Signal | Pin |
|---|---|
| SDA | GPIO 11 |
| SCL | GPIO 10 |
| INT / IRQ | GPIO 4 |
| RESET | TCA9554PWR pin 1 |
Also on the board
- I2C (GPIO 11 / 10) - SDA GPIO 11, SCL GPIO 10
- TCA9554PWR I/O expander at 0x20, driving the lines marked above
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-1.85C). Two hardware revisions share this slug and SKU.
Designing for it in LCD Wizard
- Choose Waveshare ESP32-S3-Touch-LCD-1.85C 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
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
ESP32-S3 + ILI9341 SPIESP32-S3 DevKitC wired to a 2.8" ILI9341 with XPT2046 touch.ESP32-S3 · ILI9341 240 x 320 · XPT2046 touch
ESP32-S3 + GC9A01 1.28" round240x240 round panel with CST816S single-touch. Popular for watch faces and gauges.ESP32-S3 · GC9A01 / GC9A01A 240 x 240 · CST816S touch
Sunton ESP32-8048S043 (4.3" RGB)4.3" 800x480 RGB565 panel with GT911 capacitive touch and 8 MB PSRAM.ESP32-S3 · ST7262 800 x 480 · GT911 touch
Sunton ESP32-8048S070 (7" RGB)7" 800x480 RGB565 panel with GT911 touch. Same family as the 4.3" board, different RGB pin order.ESP32-S3 · ST7262 800 x 480 · GT911 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