ESP32-S3-Touch-LCD-1.69

The ESP32-S3-Touch-LCD-1.69 is a low-cost, high-performance microcontroller development board designed by Waveshare. Powered by the ESP32-S3R8 dual-core LX7 processor (240 MHz) with 2.4 GHz Wi-Fi and Bluetooth 5 (LE), featuring 512KB SRAM, 8MB stacked PSRAM and 16MB Flash. Its compact form factor integrates a 1.69inch capacitive touch LCD (240×280), Li-battery charging, a 6-axis IMU, RTC, and other peripherals, making it convenient for rapid prototyping and embedded applications.

SKU	Product
27350	ESP32-S3-Touch-LCD-1.69

If you are looking for:

• Accelerate development with AI tools: You can share the link to this page with AI agents to help them accurately understand the board hardware and generate working code.
• Develop with Arduino IDE: See Working with Arduino
• Develop with ESP-IDF: See Working with ESP-IDF
• Download schematics, datasheets, example code: See Resources
• Troubleshooting: See FAQ or contact Technical Support

Onboard Resources

1. ESP32-S3R8 Wi-Fi and Bluetooth SoC, 240 MHz, 8MB stacked PSRAM
2. W25Q128JVSIQ 16MB NOR Flash
3. PCF85063 RTC clock chip
4. QMI8658 6-axis IMU (3-axis gyroscope + 3-axis accelerometer)
5. ETA6098 high-efficiency Li-battery charging chip
6. MX1.25 Li-battery connector MX1.25 2P connector for 3.7V Li-battery, supports charging/discharging
7. Type-C port ESP32-S3 USB, for program uploading and log printing
8. Buzzer audible peripheral
9. RTC battery connector for rechargeable RTC battery, supports charging/discharging
10. Onboard chip antenna supports 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth® 5 (LE)
11. Power function button supports power-on detection, single-click, double-click, multi-click and long-press
12. BOOT button
13. RST reset button

Peripheral Quick Reference

Module	Device / Function	Interface	Address / Parameters	GPIO / Signal
LCD	ST7789V2	4-wire SPI	240×280, RGB565, MISO unused	DC=GPIO4, CS=GPIO5, CLK=GPIO6, DIN=GPIO7, RST=GPIO8, BL=GPIO15
Touch	CST816T capacitive touch	I2C	7-bit address 0x15	SCL=GPIO10, SDA=GPIO11, RST=GPIO13, INT=GPIO14
IMU	QMI8658C 6-axis sensor	I2C	7-bit address 0x6B	SCL=GPIO10, SDA=GPIO11, INT1=GPIO38
RTC	PCF85063ATL	I2C	7-bit address 0x51, 32.768 kHz crystal	SCL=GPIO10, SDA=GPIO11, INT=GPIO39
Buzzer	Onboard buzzer	GPIO / PWM	-	GPIO42
Battery sampling	B+ voltage divider to ADC	ADC	R3 pull-up 200K, R7 pull-down 100K; VBAT=VADC×3	GPIO1 / BAT_ADC
Power control	SYS_OUT / SYS_EN	GPIO	PWR / Key2 power circuit	SYS_OUT=GPIO40, SYS_EN=GPIO41
USB Type-C	ESP32-S3 native USB	USB	Upload, logging	USB_N=GPIO19, USB_P=GPIO20
UART0	Default serial	UART	Debug / expansion pads	U0TXD=GPIO43, U0RXD=GPIO44
Charge management	ETA6098	Power	Single-cell Li-battery	PH1.25 / M1.25 battery connector
3.3V LDO	ME6217C33M5G	Power	System 3.3V	VCC3V3
PWR button	Key2 / Power	GPIO / power control	SYS_OUT pulled up, pulled low when pressed; SYS_EN controls battery power hold	SYS_OUT=GPIO40, SYS_EN=GPIO41
BOOT button	Key1 / BOOT	GPIO / download mode	Pulled up to 3.3V, pulled low when pressed	GPIO0
RST button	Key3 / Reset	Reset	Pulled up to 3.3V, pulled low when pressed	CHIP_PU

Pinout Definition

When using the GPIO pins reserved on the ESP32-S3-Touch-LCD-1.69 board, pay attention to the wire colors and corresponding functions to avoid burnout of the development board due to wiring habits.

Extension Port

Type	Signal
Power	5V / 3V3 / GND
I2C	SCL(GPIO10) / SDA(GPIO11)
UART	TX(GPIO43) / RX(GPIO44)
GPIO	GPIO2 / GPIO3 / GPIO17 / GPIO18

Complete GPIO Allocation

GPIO	Signal Name	Connected To	Notes
GPIO0	BOOT / Key1	BOOT button	Strapping pin; hold while powering on, then release to enter download mode
GPIO1	BAT_ADC	Battery voltage divider	R3 pull-up 200K, R7 pull-down 100K; VBAT=VADC×3
GPIO2	GPIO2	Reserved pad / header	Extension port GPIO2
GPIO3	GPIO3	Reserved pad / header	Extension port GPIO3
GPIO4	LCD_DC	ST7789V2 data/command	-
GPIO5	LCD_CS	ST7789V2 chip select	-
GPIO6	LCD_CLK	ST7789V2 SPI clock	-
GPIO7	LCD_DIN	ST7789V2 SPI data	Only connected to the LCD SPI write data line, LCD_DOUT unused
GPIO8	LCD_RST	ST7789V2 reset	-
GPIO10	ESP32_SCL	Touch + IMU + RTC shared I2C SCL; also exposed on extension port	See peripheral table for I2C devices
GPIO11	ESP32_SDA	Touch + IMU + RTC shared I2C SDA; also exposed on extension port	See peripheral table for I2C devices
GPIO13	TP_RST	CST816T touch reset	-
GPIO14	TP_INT	CST816T touch interrupt	-
GPIO15	LCD_BL	LCD backlight control	-
GPIO17	GPIO17	Reserved pad / header	Extension port GPIO17
GPIO18	GPIO18	Reserved pad / header	Extension port GPIO18
GPIO19	USB_N	USB Type-C D-	ESP32-S3 native USB
GPIO20	USB_P	USB Type-C D+	ESP32-S3 native USB
GPIO38	QMI_INT2	QMI8658C INT2	-
GPIO39	RTC_INT	PCF85063 RTC interrupt	-
GPIO40	SYS_OUT	System power control network	Related to PWR / Key2 power circuit
GPIO41	SYS_EN	System power control network	Related to PWR / Key2 power circuit
GPIO42	Buzz	Onboard buzzer driver	Can be used as PWM / tone output
GPIO43	U0TXD	Reserved UART TX pad / header	Extension port TX
GPIO44	U0RXD	Reserved UART RX pad / header	Extension port RX

Usage Notes

• When connecting external I2C devices, avoid address conflicts with 0x15, 0x6B, and 0x51.
• GPIO19/GPIO20 are connected to USB Type-C and are not recommended for general GPIO use.
• GPIO0 is the BOOT pin and CHIP_PU is the reset signal; not recommended as general user inputs.

Dimensions

Development Methods

The ESP32-S3-Touch-LCD-1.69 supports two development frameworks: Arduino IDE and ESP-IDF, providing flexibility for developers to choose the tool that best fits their project requirements and personal preference.

Both development methods have their own advantages. Developers can choose based on their needs and skill levels. Arduino is simple to learn and quick to start, suitable for beginners and non-professionals. ESP-IDF provides more advanced development tools and stronger control capabilities, suitable for developers with professional backgrounds or higher performance requirements, and is more appropriate for complex project development.

• Arduino IDE is a convenient, flexible, and easy-to-use open-source electronics prototyping platform. It requires minimal foundational knowledge, allowing for rapid development after a short learning period. Arduino has a huge global user community, providing a vast amount of open-source code, project examples, and tutorials, as well as a rich library ecosystem that encapsulates complex functions, enabling developers to implement various features rapidly. You can refer to the Working with Arduino to complete the initial setup, and the tutorial also provides related examples for reference.

• ESP-IDF, short for Espressif IoT Development Framework, is a professional development framework launched by Espressif Systems for its ESP series of chips. It is based on C language development and includes compilers, debuggers, flashing tools, etc. It supports development via command line or integrated development environments (such as Visual Studio Code with the Espressif IDF plugin), which provides features like code navigation, project management, and debugging. We recommend using VS Code for development. For the specific configuration process, please refer to the Working with ESP-IDF. The tutorial also provides relevant examples for reference.