ESP32-S3 4.3inch Touch LCD Development Board Type B, 800×480, 5-point Touch, 32-bit LX7 Dual-core Processor

The ESP32-S3-Touch-LCD-4.3B is an all-in-one HMI development board featuring a 4.3-inch 800×480 IPS capacitive touch display driven by an ESP32-S3 dual-core LX7 microcontroller (240MHz). Equipped with 16MB Flash and 8MB PSRAM, it easily powers advanced GUIs like LVGL. Built for industrial applications, it incorporates isolated Digital I/O, CAN, RS485, I2C, TF card storage, RTC, and a wide-range 7–36V DC power supply with battery fallback. Flexible screw terminal options make integration into DIN-rail setups or custom enclosures effortless.
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ESP32-S3-Touch-LCD-4.3B

Integrates RGB interface LCD with 5-point capacitive touch, multiple peripheral interfaces

 ESP32-S3 4.3inch Capacitive Touch Display Development Board (B), front view and features
 
Features

ESP32-S3-Touch-LCD-4.3B is a microcontroller development board with 2.4GHz WiFi and BLE 5 support, integrates high-capacity Flash and PSRAM. Onboard 4.3inch capacitive touch screen can smoothly run GUI programs such as LVGL. Combined with various peripheral interfaces, suitable for the quick development of the HMI and other ESP32-S3 applications

  • Equipped with 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 SRAM 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 voltage regulator, supports 7~36V wide range power supply
  • Onboard RTC chip and battery holder to ensure time data is not lost during power loss when battery is installed
  • Onboard CAN, RS485, I2C interface, TF card slot, MX1.25 2P battery header, and digital isolated IO interfaces, etc.
  • Supports passive and active digital input, with bi-directional optocoupler isolation
  • Supports digital output with optocoupler isolation, provides higher driving capability with up to 450mA sinking current
  • Onboard LED indicators for indicating the power and battery recharging status
  • Supports flexible clock, module power supply independent setting and other controls to realize low power consumption in different scenarios

 

Application Scenarios
ESP32-S3 4.3inch Capacitive Touch Display Development Board (B), application scenarios

 

IPS Display Panel

Excellent display performance, 160° wide viewing angle

 

ESP32-S3 4.3inch Capacitive Touch Display Development Board (B) with IPS display panel

 

Capacitive 5-point touch

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

 

ESP32-S3 4.3inch Capacitive Touch Display Development Board (B) with capacitive 5-point touch
 
Supports multiple peripherals

Supports the expansion of multiple peripherals via CAN, RS485, I2C and isolated IO interfaces

 

ESP32-S3 4.3inch Capacitive Touch Display Development Board (B), supports multiple peripherals
 
Supports Two wiring methods

Comes with two types of screw terminals, allowing for bottom or back wiring, which is more convenient to integrate into various application scenarios such as DIN rail or embedded devices

ESP32-S3 4.3inch Capacitive Touch Display Development Board (B), supports bottom wiring

 

Bottom Wiring

 
ESP32-S3 4.3inch Capacitive Touch Display Development Board (B), supports back wiring

 

What's On Board
ESP32-S3 4.3inch Capacitive Touch Display Development Board (B), onboard components

 

  1. ESP32-S3-WROOM-1-N16R8
    The SoC with WiFi and Bluetooth, up to 240MHz operating frequency, integrated 8MB PSRAM and 16MB Flash
  2. TF card slot
  3. USB Type-C port
  4. BOOT button
    Press and hold while powering on for program burning
  5. RESET button
  6. Optocoupler isolation
  7. Touch panel connector
  8. 4.3inch display panel connector
  9. RS485 and CAN terminal resistors selection
    close by default
  10. Battery power supply ON/OFF
  11. 3.7V single lithium battery MX1.25 header
  12. Status Indicators
    DONE: Lithium battery charging completed indicator
    CHG: Lithium battery charging indicator
    PWR: Power supply indicator
    (the CHG will blink and DONE will light on when connecting with DC power supply and without lithium battery connected or battery switch is OFF
  13. 7-36V DC power supply terminal
  14. I2C interface terminal
    VOUT pin output 5V/3.3V (switching by onboard resistor)
  15. CAN interface terminal
  16. RS485 interface terminal
  17. Digital output
    5~36V, open-drain output, output load: 450mA per channel (MAX)
  18. Input signal common terminal
    NC: dry contact passive input
    Connect to power supply positive: digital input low active, for NPN wet contact active input, 5V-36V DC
    Connect to power supply negative: digital input high active, for PNP wet contact active input, 5V-36V DC
  19. Digital input
    5~36V, supports passive / active input (NPN or PNP)
  20. RTC battery holder
    Specification: CR927

 

Outline dimensions

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

 ESP32-S3 4.3inch Capacitive Touch Display Development Board (B), outline dimensions

 

What's in the box?

1 x ESP32-S3 4.3inch Touch LCD Development Board Type B, 800×480

Resources

www.waveshare.com/wiki/ESP32-S3-Touch-LCD-4.3B

  • Availability: Out of Stock
  • Model: ESP32-S3-Touch-LCD-4.3B
  • Brand: WaveShare