3.5” ESP32-S3 Display with 320x480 Capacitive IPS Touch Panel | With Speaker/Mic/BAT Interface | Supports AI Voice Chat

Description This 3.5-inch ESP32-S3 development board integrates display, touch, voice, and wireless communication, specifically designed for intelligent interaction and IoT applications. It utilizes a dual-core ESP32-S3 processor with a clock speed of up to 240 MHz, 8 MB of PSRAM, and 16 MB of Flash memory. It supports 2.4GHz Wi-Fi and Bluetooth 5.0, providing ample computing power for complex human-machine interfaces and AI algorithms. The screen is a 3.5-inch IPS full-view color display with a resolution of 320×480 and 65K colors, offering vibrant colors and a wide viewing angle. The capacitive touchscreen ensures high sensitivity and a smooth human-machine interaction experience. An onboard high-sensitivity microphone and speaker interface (with a speaker included) enable voice capture and playback, supporting the "Xiao Zhi AI" voice chat function, simplifying voice interaction development. The module integrates a Type-C interface (supporting one-click download), a TF card slot, and a lithium battery charging management circuit (supporting external 3.7V lithium batteries), facilitating the development of portable devices. It offers multiple expansion interfaces such as SPI, IIC, and UART, facilitating connection to various sensors and peripherals. The product has undergone aging tests and multiple inspections, supports a wide operating temperature range of -30~80℃, and, with abundant sample programs and underlying driver technology support, is an ideal choice for smart home control systems, AI voice assistants, and portable smart terminals. Hardware Overview Feature High-performance ESP32-S3 main controller: Dual-core Xtensa LX7 processor, 240MHz clock speed, built-in 8MB PSRAM + 16MB Flash, supports 2.4GHz WiFi and Bluetooth 5.0. 3.5-inch IPS full-view color screen: 320×480 resolution, 65K colors, capacitive touch, clear display, sensitive touch, and smooth response. Voice interaction support: Onboard high-sensitivity microphone interface and an external speaker (included), supporting voice chat for easy development of voice control and audio playback applications. Lithium battery charge/discharge management: Built-in battery charging management circuitry, supports external 3.7V lithium batteries for safe charging and discharging. Rich expansion interfaces: Onboard Type-C (one-click download), TF card slot, IIC, UART, SPI, and other interfaces for easy connection to various sensors and peripherals. Convenient Development Experience: Standard Type-C interface integrates a one-click download circuit, eliminating the need for manual button presses; provides complete sample programs and underlying driver technology support. Status Indicators: Built-in RGB three-color indicator lights allow for customizable display of device status, facilitating debugging and interactive feedback. Reliable Quality: The module undergoes aging tests and multiple inspections, supports a wide operating temperature range of -30~80℃, and is suitable for various indoor and outdoor environments. Interface Definition Interface Name Function Description ESP32-S3 Main control of the display module, working together with the peripheral circuit, is used to control on-board peripherals and external peripherals. MicroSD card slot Insert a SD card to expand storage space, such as storing large data content such as font libraries, images, audio files, etc. RGB tricolor light Contains LEDs of three colors: red, green, blue. It has a built-in control IC and only needs one IO port to control. It can be used for LED testing and status indication. UART 1.25mm4P socket. It can be used for serial port debugging, downloading, and communication. An external USB to serial port module is required. Battery interface 1.25mm 2P socket. Used to connect to a 3.7V polymer lithium battery, charge the battery through the battery management circuit, and can also be used for battery power supply. Note the positive and negative terminals of the interface. BOOT key Used to enter the download mode or key test. Press and this key to power up, then release to enter the download mode, or after powering up, press and hold this key, then press the RESET key, release the RES key and then release this key, you can also enter the download mode. When you don't need to enter the download mode, this key can be used as a normal key TYPE-C interface It is used for module power supply and program download, debugging. This interface is connected to the internal USB bus of ESP32-S3, which can generate a USB serial port. Note: win10 and above systems support USB virtual serial port function. If you use this interface on other versions of the system, you need to solve the problem USB virtual serial port not working by yourself. RESET key For ESP32-S3 main control and LCD reset, press to reset low level. Expansion pin 1.25mm 4P socket. Two pins are GPIO45 and GPIO46. It can be used to connect other peripherals. Speaker interface 1.25mm P socket. Used to connect the speaker to play audio. Used to connect the speaker to play audio (maximum support 1.5W (8Ω) or 2W4Ω) speaker. I2C peripheral interface 1.25mm 4P connector. Used for connecting external IIC communication devices. This IIC interface is shared with capacitive touchscreens. Can also be used for general I/O. Specification ESP32 Module Chip ESP32-S3 (N16R8) CPU Xtensa LX7 32-bit dual-core processor Frequency 240MHz(Max) Memory 384KB ROM+512KB SRAM+16KB RTC SRAM+8M internal OPI PSRAM+16M external SPI Flash Wi-Fi 2.4GHz, 802.11b/g/n mode Bluetooth Bluetooth V5.0 BR/EDR and Bluetooth LE standard Screen Panel Size 3.5 inch Panel Type IPS Touch Screen Type Capacitive touch screen Resolution 320x480 Active Area 48.96x73.44(H)(mm) Number of Pixels 65K(RGB565) Display Driver IC ST77922 Display interface QSPI(Received on ESP32-S3) View Angle ALL ’CLOCK Brightness(TYP) 300 cd/m2 Backlight Type White LED*6 Communication Interface IIC Pixel Size 0.153(H)x0.153(mm) Other Working Voltage 5.0V Backlight current 120mA Charging current Maximum value: 500mA Module actual: 290mA Power 0.96（Only the display works） 1.76（Display, speaker, battery charging all work） Total power consumption (typical value) 1.45W Charging saturation voltage 4.24V Charging temperature Module actual maximum value: 62℃ Charging battery 3.7V lithium polymer battery (not included) Power interface USB(Type-C) Operating temperature -30~80(℃) Storage temperature -30~80(℃) Module Size 54.50(W)x101.50(H)x10.00(D)(mm) Net Weight 50g ESP32 Pin Assignment Onboard Equipment ESP32 Connect Pins Pin Description of Onboard Equipment LCD IO10 LCD screen chip select control signal, low level active IO12 LCD QSPI bus clock signal IO11 LCD QSPI data bus D0 IO13 LCD QSPI data bus D1 IO14 LCD QSPI data bus D2 IO9 LCD QSPI data bus D3 EN LCD screen reset control signal, low level reset (share reset pin with ESP32-S3 main control) IO41 LCD screen backlight control signal ( level turn on backlight, low level turn off backlight) Capacitive Touch Screen IO38 Capacitive touch screen I2C bus data signal (share with audio codec IC and extended I2C) IO39 Capacitive touch screen I2C bus clock signal (share with audio codec IC and extended I2C) IO48 Capacitive touch screen reset control signal, low level IO47 Capacitive touch screen interrupts the input signal, input low level when touch event occurs. RGB light IO40 RGB three-color LED light control signal with built-in control IC. Different timing can be input to control the internal red, green and blue three kinds of beads respectively. MicroSD Card IO5 SD card SDIO bus clock signal IO4 SD card SDIO bus command signal IO6/7/2/3 SD SDIO bus data signal DATA0~DATA3 Audio IO1 Audio power amplifier IC enable pin, low level enable IO17 Audio I2S bus master clock signal IO18 Audio I2S bus bit clock signal IO16 Audio I2S bus bit output data signal IO21 Audio I2S bus left and right channel selection signal. High level: right channel; low level: left channel IO15 I2S bus bit input data signal IO38 Audio codec IC's I2C bus data signal (share with capacitive touch screen and extended I2C) IO39 Audio codec's I2C bus clock signal (share with capacitive touch screen and extended I2C) Button IO0 Download mode selection button (hold this button to power up, then release enter download mode) EN ESP32-S3 reset button, low level reset (share with LCD screen reset) Serial Port RXD0(IO43) ESP32-S3 serial port 0 receive signal interface (if the serial port communication function is not used, it can be used as a IO port) TXD0(IO44) ESP32-S3 serial port 0 receive signal interface (if the serial port communication function is not used, it can be used as a general port) Battery IO8 Battery voltage ADC value acquisition input signal Expansion pin IO45 ports that can be used to connect peripherals IO46 ports that can be used to connect peripherals GND GND VCC 3.3V I2C peripheral interface IO38 Expansion interface I2C bus data signal (shared with capacitive touch screen and audio codec IC, can be used a general IO when touch and audio functions are not used, otherwise it can only be used as an I2C interface) IO39 Expansion interface I2C bus clock signal ( with capacitive touch screen and audio codec IC, can be used as a general IO when touch and audio functions are not used, otherwise it can only be used as an I2C interface) Package List 1x 3.5 inch ESP32 LCD Module 1x Type-C Cable 1x 4Pin Cable 1x Speaker