WAVESHARE ESP32-S3 4.2inch RLCD Development Board, 300 × 400 Resolution, Support

Product Description

E-paper-like Reading Experience, Faster Refresh Response

AI Voice Interaction, Temperature & Humidity Monitoring, DIY Learning & Development

ESP32-S3-RLCD-4.2
Comes with a 18650 Lithium Batt

ESP32-S3-RLCD-4.2-EN
Without 18650 Lithium Batt

The ESP32-S3-RLCD-4.2 is a RLCD AIoT development board based on ESP32-S3, supporting Wi-Fi and BLE dual-mode communication. Onboard 4.2inch RLCD with low power consumption, e-paper-like display experience, and faster refresh response. Integrated with audio codec circuit, dual microphones, speaker, SHTC3 high-precision temperature and humidity sensor, TF card slot, RTC header, and Lithium Batt charging and discharging management circuit, etc. Reserved USB, UART, I2C, and multiple GPIO interfaces for easy expansion. Supports AI Voice Interaction, temperature and humidity monitoring, and IoT control, making it suitable for DIY desktop smart ornaments, electronic calendars, AI smart devices, and other applications. Also ideal for product prototyping.

• Adopts high-performance Xtensa 32-bit LX7 dual-core processor, up to 240MHz main frequency

• Supports 2.4GHz Wi-Fi and Bluetooth 5 (LE), with onboard antenna

• Built-in 512KB Static RAM, 384KB ROM, with integrated 16MB Flash and 8MB PSRAM

• Onboard 4.2inch RLCD, 300 × 400 resolution, features reflective imaging and no backlight required

• Equipped with a dual-microphone array, enabling audio algorithms such as noise reduction and echo cancellation, suitable for accurate voice recognition and near-field / far-field voice wake-up applications

• Onboard PCF85063 RTC chip and SHTC3 temperature & humidity sensor for accurate RTC management and environmental monitoring

• Onboard 18650 Lithium Batt holder and RTC backup Batt header. The RTC backup Batt header supports a rechargeable RTC Batt and dual modes of main Batt power supply and RTC independent power supply

• Onboard TF card slot for external storage of images or files

• Onboard programmable KEY and BOOT side buttons for customized function development

• Reserved 2 × 8PIN 2.54mm pitch female header for convenient external expansion

Supports High-Quality Audio Processing, Providing Clear And High-Quality Audio Input And Output

Allows Access To Online Large Model Platforms Such As DeepSeek, Doubao, Etc

The Reflective Liquid Crystal Display (RLCD) is a specialized type of LCD that efficiently utilizes ambient light (such as natural sunlight or indoor illumination) instead of a backlight, achieving both energy efficiency and environmental friendliness. Thanks to its reflective design, RLCDs perform exceptionally well in bright environments, where conventional LCDs may suffer from glare and reduced visibility. By effectively reflecting external light, the RLCD can provide a clear, high-quality visual experience.

Ideal For DIY Desktop Smart Ornaments, Electronic Calendars, AI Smart Devices,
Outdoor Displays And More

Comprehensive SDK, Dev Resources, And Tutorials To Help You Easily Get Started

1. ESP32-S3-WROOM-1-N16R8
   The SoC with Wi-Fi and Bluetooth, 240MHz main frequency, integrated with 16MB Flash and 8MB PSRAM

2. ES7210
   ADC chip for echo cancellation circuit

3. ES8311
   low-power audio codec chip

4. BOOT button
   Press it when powering on to enter download mode

5. PWR button
   long press to power off, short press to power on

6. KEY button
   customizable for other functions

7. SHTC3 temperature and humidity sensor
   provides ambient temperature and humidity measurement, enabling environmental monitoring function

8. PCF85063
   RTC chip with timekeeping function

1. MX1.25 2PIN speaker header
   audio output signal, for connecting external speaker

2. RTC independent power supply header
   supports PH1.0 rechargeable only

3. 2 × 8PIN 2.54mm pitch female header
   

4. 18650 Lithium Batt holder
   

5. Dual-microphone array design
   dual-microphone array, paired with ES7210 to achieve echo cancellation

6. CHG charging indicator
   off when fully charged

7. WRN warning indicator
   stays on when Batt is reverse-connected

8. Type-C port
   for program burning and log printing

9. TF card slot
   supports FAT32 TF card for data expansion

About Prime Living

Prime Living is a Canadian online store offering a carefully selected range of quality products for home, automotive, tools, outdoor living, electronics and more.

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Shipping policy

We carefully handle each order to ensure your package arrives quickly and safely. Please note that factors such as weather, postal traffic, or carrier performance may occasionally cause delays beyond our control.

We provide free shipping and dispatch all orders within 2 business days of payment, often sooner. All shipments are sent via international express air shipping, with a tracking number provided so you can follow your order every step of the way.

. Please provide a physical address, as we do not ship to P.O. Boxes.

Returns

Your satisfaction is important to us. Hexlight offers a 14-day Free return policy: if you are not fully satisfied with your purchase, you may request either a full refund or an exchange. All return shipping costs are fully covered by us.

Condition

Brand New

Shipping

This item is shipped directly from our supplier in China with tracking.