The ESP32S3TouchLCD1.69 is a compact, performance microcontroller development board with an integrated 1.69inch capacitive touch LCD screen. It is designed to be embedded in products and to simplify development of featurerich, batterypowered devices. performance core Xtensa 32bit LX7 dualcore processor, up to 240 MHz, enabling fast application logic, realtime processing, and responsive UI. Power and battery management Onboard lithium battery charging circuit. Reserved 1.25 V battery slot for realtime clock backup and power management requirements. Sensing and motion Onboard QMI8658 sixaxis inertial measurement unit (3axis accelerometer and 3axis gyroscope) for motion posture detection, steps, and related sensing functions. Display and touch Onboard 1.69inch capacitive touch LCD screen, 240x280 resolution, 262K colors. ST7789V2 display driver chip and CST816T capacitive touch controller. Display interface via SPI; touch interface via I2C, minimizing channel usage on the MCU. Connectivity 2.4 GHz WiFi (802.11 b/g) and Bluetooth 5 (LE) with an onboard antenna for wireless communication and device networking. Memory and storage Builtin 512 KB ROM and 384 KB ROM. Stacked 8 MB PSRAM. External 16 MB memory for additional storage. Form factor and hardware integration Small form factor designed for easy embedding into products. Supports multiple peripherals while preserving important I/O pins due to SPI and I2C driven display and touch interfaces. Use scenarios and applications Portable control panel or handheld device requiring a compact touch display and motion sensing, such as field service tools, inspection devices, or handheld scanners. Smart home or IoT controller with local display and wireless connectivity for quick status checks and user interaction. Embedded wearable or health/fitness accessory that benefits from motion tracking, a builtin display, and battery management for ondevice interaction. Why choose this board Combines a performance dualcore MCU with an integrated touchscreen display, motion sensing, and wireless connectivity in a small footprint. Reduces development time by providing a readytouse display, touch input, IMU data, and power management in a single board. Flexible memory and storage options support complex UI, data processing, and offline operation while maintaining low pin usage through SPI/I2C interfaces.