Sunton / CYD · ESP32-S3 · 1.9" · 170×320
Sunton (CYD) ESP32-1732S019 1.9" specifications
The Sunton (CYD) ESP32-1732S019 1.9" is a 1.9" 170×320 display board by Sunton / CYD, built around the ESP32-S3 (ESP32-S3-WROOM-1 module) running at 240 MHz. The panel uses a ST7789 (SPI) controller over SPI, with GT911 (I2C, SDA 9 / SCL 46, INT 8, RST 3) on the C variant; none on the N variant touch input. Memory: 16 MB flash, 8 MB PSRAM; wireless: Wi-Fi and Bluetooth. In LCD Ultra Pro you can design its UI visually at the exact resolution; a ready-made display driver for the Arduino export is not available yet, so the export contains the LVGL UI code for your own project.
- Screen
- 1.9" · 170×320
- Chip
- ESP32-S3
- Memory
- 16 MB flash, 8 MB PSRAM
- Input
- capacitive touch
Specifications
| Manufacturer | Sunton / CYD |
|---|---|
| Screen size | 1.9" |
| Resolution | 170×320 px |
| Colour depth | 16-bit |
| Display controller | ST7789 (SPI) |
| Display interface | SPI |
| Touch | GT911 (I2C, SDA 9 / SCL 46, INT 8, RST 3) on the C variant; none on the N variant |
| Microcontroller | ESP32-S3 |
| Module | ESP32-S3-WROOM-1 |
| CPU clock | 240 MHz |
| Internal SRAM | 512 KB |
| PSRAM | 8 MB |
| Flash | 16 MB |
| Wi-Fi | Yes |
| Bluetooth | Yes |
Free GPIOs and connectors
These GPIOs are not used by the display, touch or on-board peripherals, so you can wire your own sensors, buttons or relays to them.
| Pin | Capabilities | Note |
|---|---|---|
| GPIO 0 | GPIO, BOOT | Boot button / IO0 |
| GPIO 2 | GPIO, ADC | Not used by the display or touch — not checked on a board |
| GPIO 4 | GPIO, ADC | Not used by the display or touch — not checked on a board |
| GPIO 6 | GPIO, ADC | Not used by the display or touch — not checked on a board |
| GPIO 43/TX | GPIO, UART_TX | UART0 TX (USB-UART bridge) |
| GPIO 44/RX | GPIO, UART_RX | UART0 RX (USB-UART bridge) |
LVGL support in LCD Ultra Pro
| Driver status | Driver not available yet |
|---|---|
| Arduino export | LVGL 8.4 UI and event code only (bring your own display driver) |
| USB Live preview | No |
| Orientations | 0° |
| Brightness control | Software dimming layer |
Pick this board in the editor and the canvas matches its exact resolution and shape. Build the interface with widgets, add events without code, try it in Live Preview, then export it as LVGL UI code. See the documentation for the workflow.
Frequently asked questions
What is the resolution of the Sunton (CYD) ESP32-1732S019 1.9"?
170×320 pixels on a 1.9" screen, driven at 16-bit colour depth.
Which display controller and interface does it use?
ST7789 (SPI) over SPI.
Does the Sunton (CYD) ESP32-1732S019 1.9" have a touchscreen?
Yes — GT911 (I2C, SDA 9 / SCL 46, INT 8, RST 3) on the C variant; none on the N variant.
Which ESP32 chip and how much memory does it have?
ESP32-S3 (ESP32-S3-WROOM-1) at 240 MHz, 16 MB flash, 8 MB PSRAM.
Which GPIOs are free for my own sensors or relays?
6 GPIOs are free: GPIO 0, GPIO 2, GPIO 4, GPIO 6, GPIO 43/TX, GPIO 44/RX.
Can I use LVGL on the Sunton (CYD) ESP32-1732S019 1.9"?
Yes, with your own display driver setup. In LCD Ultra Pro you can design the UI at the board’s exact resolution and export the LVGL 8.4 UI and event code; a ready-made display driver for this board is not included yet, so you call ui_init() from your own LVGL project.
Sources
Specifications cross-checked against the manufacturer’s documentation (last checked 2026-10-27):
Last updated: