The ESP32-S31-Touch-LCD-4.3C is a touchscreen development board based on the ESP32-S31-WROOM-3 module. It features an 800 × 480 RGB display, capacitive touch, audio, motion sensing, and industrial communication interfaces. It is suitable for smart control panels, equipment monitoring terminals, and IoT HMI applications.

• Equipped with high-performance dual-core 32-bit RISC-V microcontroller, with main frequency up to 320MHz
• Supports 128-bit SIMD instructions and integrates JPEG encoding/decoding, PPA and 2D-DMA hardware acceleration
• Supports 2.4GHz Wi-Fi 6, Bluetooth 5.4 (LE + Classic) and IEEE 802.15.4, with an onboard antenna
• Supports Thread, Zigbee and Bluetooth Mesh 1.1 for smart home networking
• Built-in 512KB Static RAM, 320KB ROM, 16MB Flash, and 16MB PSRAM
• Onboard 4.3inch capacitive touch LCD, 800 × 480 resolution, 65K colors
• Adopts GT911 capacitive touch controller supports I2C communication, 5-point touch with interrupt support
• Supports LVGL graphical user interface development and PWM backlight brightness adjustment
• Onboard ES8389 audio codec, dual microphones and speaker amplifier circuit facilitate the development of recording, voice playback and networked voice interaction applications
• Onboard voltage regulator, supports 7 ~ 36V wide range power supply
• Onboard Lithium batt charging circuit and BQ27220 fuel gauge support charging and batt level monitoring
• Onboard RTC chip and backup batt holder to ensure time data is not lost during power loss when Batt is installed
• Supports half-duplex RS485 communication and CAN-FD connectivity for easy interfacing with field equipments
• Onboard TF card slot and 6-axis inertial measurement unit (IMU) for resource storage, data logging, and motion sensing
• Adapting the native USB Host connector and provides examples for USB Host operation and external USB camera preview
• Adapting I2C and 6 × GPIO screw terminals for connecting additional sensors and external devices
• Onboard power and charging status indicators make it easy to check the power supply and Batt charging status
• The chip supports secure boot, Flash encryption, PSRAM encryption and TEE/APM-based security isolation
• Provides 16 examples covering display, touch, audio, and major onboard peripherals, facilitating further development

Note: LE Audio, Thread, Zigbee, Mesh and security features require the appropriate SDK and firmware. The native USB interface is provided separately, while the onboard USB Type-C port supports power supply, firmware uploading, and serial debugging.