ESP32-S3 4.3inch AI Voice Touch

ESP32-S3 4.3inch AI Voice Touch Display Development Board, 800 × 480 Resolution, 5-Point Touch, Dual-MIC Array, Supports 2.4GHz Wi-Fi & BLE 5

ESP32-S3 4.3inch AI Voice
Touch Display Development Board

Integrated capacitive touch, high-definition LCD, and audio codec chip

Supports audio output and recording, enabling a smarter human-machine interaction

Version Options

ESP32-S3-Touch-LCD-4.3C
Standard version, without case

 

ESP32-S3-Touch-LCD-4.3C-BOX
With plastic case

 

Features

The ESP32-S3-Touch-LCD-4.3C integrates a 4.3inch capacitive touch display and an audio module, supporting AI speech interaction and the LVGL graphical interface. Combining display, touch, and voice in one device, it enables easy development of intelligent human-machine interaction terminals.

Equipped with high-performance Xtensa 32-bit LX7 dual-core processor, up to 240MHz main frequency Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE), with onboard antenna Built in 512KB Static RAM and 384KB ROM, with onboard 16MB Flash and 8MB PSRAM Onboard 4.3inch capacitive touch display, 800 × 480 resolution, 65K color Supports capacitive touch control via I2C interface, 5-point touch with interrupt support Onboard ES8311 audio codec chip and ES7210 echo cancellation circuit Onboard voltage regulator, supports 7 ~ 36V wide range power supply Onboard RTC chip and Batt holder to ensure time data is not lost during power loss when Batt is installed Onboard I2C interface, TF card slot, MX1.25 2PIN Batt header, and digital isolated IO interfaces, etc. Supports passive and active digital input with bi-directional optocoupler isolation, and the active digital input supports positive and negative voltages Supports digital output with optocoupler isolation, provides higher driving capability with up to 450mA sinking current Onboard LED indicators for indicating the power and Batt recharging status Supports flexible clock, module power supply independent setting and other controls to realize low power consumption in different scenarios

 

 

optional for dedicated plastic case

 

Supports installing 60 × 30 × 6 (mm) (L × W × H) Lithium Batt

 

* for reference only, the Lithium Batt is NOT included.

multiple installation methods

 

* for reference only, the rail bracket, wall bracket and monitor arm are not included.
The mounting hole spacing on the back of the case is 75mm.

 

Support Batch Customization

Support software and hardware customization
Including hardware interface, LOGO, label, case and web page, etc.

outline dimensions

ESP32-S3-Touch-LCD-4.3C (without case)

  

ESP32-S3-Touch-LCD-4.3C-BOX (with case)

 

Resources & Services

Wiki: docs.waveshare.com/ESP32-S3-Touch-LCD-4.3C

• 5V output screw terminal
• Digital output
  5 ~ 36V, open-drain output, output load: 450mA per channel (MAX)
• Input signal common terminal
  NC: dry contact passive input
  Connect to power supply positive: digital input low active, for NPN wet contact active input, 5 ~ 36V DC
  Connect to power supply negative: digital input high active, for PNP wet contact active input, 5 ~ 36V DC
• Digital input
  5 ~ 36V, supports passive / active input (NPN or PNP)
• RTC Batt holder
  Specification: CR927
• Microphones

 

7 ~ 36V DC power supply terminal I2C port screw terminal
VOUT pin output 5V/3.3V (switching by onboard resistor)

 

IPS Display Panel

Excellent display performance, 160° wide viewing angle

Capacitive 5-point touch

supports touch function with I2C interface, 5-point touch for flexible operation
and smooth multi-point UI interaction

Supports AI Speech Interaction

Allows access to online large model platforms such as DeepSeek, Doubao, etc.

 

 

Supports multiple peripherals

Supports the expansion of multiple peripherals via I2C and isolated IO interfaces

 

Application Scenarios

What's On Board

ESP32-S3-WROOM-1-N16R8
The SoC with Wi-Fi and Bluetooth, up to 240MHz operating frequency, integrated 8MB PSRAM and 16MB Flash TF card slot USB Type-C port BOOT button
Press and hold while powering on for program burning RESET button Optocoupler isolation Touch panel connector 4.3inch display panel connector Speaker header
MX1.25 2PIN header Batt power supply ON/OFF 3.7V single Lithium Batt MX1.25 header Status Indicators
DONE: Lithium Batt charging completed indicator
CHG: Lithium Batt charging indicator
PWR: Power supply indicator
(the CHG will blink and the DONE will light on when connecting with DC power supply and without lithium Batt connected or Batt switch is OFF)

ESP32-S3-Touch-LCD-4.3C

1. ESP32-S3-Touch-LCD-4.3C (with back wiring 16PIN screw terminal) x1
2. 16PIN screw terminal for bottom wiring x1

1

2

ESP32-S3-Touch-LCD-4.3C-BOX

ESP32-S3-Touch-LCD-4.3C-BOX x1