LAFVIN ESP32-S3 4.2 Inch Reflection Display Board, WiFi BLE with Microphone Temp Humidity Sensor RTC for IoT Project
I. Product Overview
This is a multifunctional ESP32-S3 development board integrating display, audio, environmental sensing, and wireless communication capabilities. Powered by the ESP32-S3-N16R8 module and featuring a 4.2-inch reflective display, the board incorporates a dual-microphone array, audio processing chip, temperature and humidity sensor, real-time clock (RTC), and Micro SD card slot. It provides an all-in-one hardware platform for embedded development, smart terminal design, and IoT applications. Equipped with 16MB of Flash and 8MB of PSRAM, along with 2.4GHz Wi-Fi and Bluetooth 5 LE connectivity, it meets the development needs of various connected devices and interactive applications.
Whether creating a desktop smart clock, an environmental monitoring terminal, or a voice-interactive device, or exploring AIoT applications and custom display interfaces, this board serves as an ideal foundation for creative development. Its rich onboard resources minimize the need for external modules, allowing developers to focus more on programming, functional integration, and project innovation.
II. Product Features
1. 4.2-inch reflective display for a unique information viewing experience:
The board features a 4.2-inch reflective display with a resolution of 300 × 400. Unlike traditional backlit displays, reflective display technology utilizes ambient light for imaging, making it ideal for presenting time, environmental data, status alerts, and graphical information. Whether building a desktop clock, a weather information terminal, or a personalized data dashboard, it provides a clear and intuitive interface for displaying information.
2. Powerful ESP32-S3 main controller to meet diverse development needs:
The product utilizes the ESP32-S3-WROOM-1-N16R8 module, powered by a dual-core Xtensa LX7 processor with a maximum clock speed of 240MHz, and is equipped with 16MB of Flash and 8MB of PSRAM. Ample storage resources and processing power provide a solid foundation for display control, sensor data processing, wireless communication, and the coordinated operation of multiple peripherals.
3. Integrated audio system for exploring voice interaction applications:
The development board integrates the ES8311 audio codec and ES7210 ADC, and features a dual-microphone array and speaker interface, providing hardware support for audio input, processing, and output projects. With appropriate software and algorithms, users can develop applications such as voice control, audio playback, voice capture, and smart assistants.
4. Onboard temperature and humidity sensor for easy environmental monitoring:
The board integrates the SHTC3 temperature and humidity sensor, allowing for the acquisition of environmental data without the need for external sensor modules. Combined with the display and wireless communication capabilities, it enables the development of projects such as indoor environmental monitoring terminals, temperature/humidity display clocks, and connected environmental data dashboards.
5. Real-time clock and expandable storage for diverse application scenarios:
The onboard PCF85063 real-time clock (RTC) chip supports applications involving time management, clock displays, and scheduled tasks. Additionally, the board includes a Micro SD card slot to provide expandable storage for projects requiring external memory, making it suitable for data logging, file management, and other storage-related applications.
6. Reserved GPIO expansion headers to unlock DIY creative potential
The development board features reserved 2 × 8-pin expansion headers that expose available GPIOs and related signals, offering users flexible hardware expansion capabilities. Developers can connect external sensors, control modules, actuators, and other compatible peripherals based on project requirements, further extending the board's functionality beyond its built-in features.
III. Target Audience and Application Areas
* ESP32-S3 beginners and students learning embedded development
* Electronics enthusiasts and DIY makers
* IoT device prototyping developers
* Developers of smart desktop devices and information terminals
* Explorers of voice interaction and AIoT applications
* University laboratory experiments, maker projects, and embedded system education
IV. Bill of Materials:
ESP32-S3 4.2-inch RLCD Development Board x1
1.25mm 8Ω 2W Speaker x1
USB Type-C Data Cable x1
Acrylic Stand x1
Screw Pack x1
Phillips Screwdriver x1
V. Product Specifications
Dimensions: 15CMX10CMx4CM
Weight: 163G