Does this board come with a battery and case?

Yes, this specific "Case A" version includes a custom protective enclosure and an 18650 lithium battery that installs directly inside the case.

Can I program this display using the Arduino IDE?

Yes, the ESP32-S3 chip is fully compatible with the Arduino IDE, as well as Espressif's official ESP-IDF framework for more advanced development.

What is the maximum capacity TF card I can use?

While the exact maximum capacity depends on the firmware, the TF card must be formatted to FAT32 to ensure proper data reading and media playback.

Does the board have a built-in speaker?

The board features an MX1.25 2-pin speaker header on the back for connecting an external speaker, which is driven by the onboard ES8311 DAC.

Can I get advice on setting up the AI speech functions at your Sham Shui Po store?

Yes, our technical staff at the Sham Shui Po retail shop can provide basic guidance and point you toward the official Waveshare SDKs and tutorials for AI integration.

Waveshare ESP32-S3 3.49" Touch LCD Board (Case A + Battery)

Name: Waveshare ESP32-S3 3.49" Touch LCD Board (Case A + Battery)
Brand: Waveshare
SKU: 21CU000189
Price: 1370.0 TWD
Availability: InStock

Short Product Description

The Waveshare ESP32-S3-Touch-LCD-3.49 is a highly integrated IoT development board featuring a 3.49-inch capacitive touch screen and a powerful dual-core processor. Equipped with a dual-microphone array, audio codec, and 6-axis IMU, it is purpose-built for AI speech interaction and smart home control panels. This "Case A" version includes a protective enclosure and a rechargeable 18650 lithium battery, providing an immediate, portable platform for your Arduino and ESP-IDF projects.

Key Features

Vibrant Touch Display: 3.49-inch IPS capacitive touch screen with a 172×640 resolution and 16.7M colors for crisp human-machine interfaces.
AI Audio Ready: Dual-microphone array with echo cancellation and dedicated audio codecs (ADC/DAC) for reliable voice recognition.
Portable Case A Design: Includes a custom protective enclosure and an 18650 lithium battery for immediate off-grid prototyping.
Integrated Sensors: Features a QMI8658 6-axis IMU for motion detection and a PCF85063 RTC chip for accurate time retention.
Broad Compatibility: Fully supports open-source development platforms including ESP-IDF and Arduino IDE.

Full Product Description

High-Performance IoT and AI Development

This development board leverages the ESP32-S3R8 microcontroller to deliver robust Wi-Fi and Bluetooth 5 (LE) connectivity alongside powerful processing capabilities. It is designed to act as a standalone smart hub, capable of interfacing with online large language models (like DeepSeek) for advanced AI speech interaction. With 8MB of onboard PSRAM and 16MB of external Flash, it easily handles complex graphics on the 3.49-inch IPS display while managing background IoT tasks.

Advanced Audio and Motion Sensing

The board integrates a complete audio and motion sensing suite directly into its compact footprint. It features an ES7210 ADC with a dual-microphone array for echo cancellation and noise reduction, alongside an ES8311 DAC for clear audio playback. Additionally, the onboard QMI8658 6-axis IMU allows for precise gesture recognition and motion tracking, making it ideal for interactive handheld devices or wearable prototypes.

Technician Tip

When setting up this board for the first time, ensure your TF (MicroSD) card is formatted to FAT32, as other formats will not be recognized for data expansion or media playback. Our Sun Cheong Computer Co. Ltd. technical team recommends utilizing the built-in Type-C port not just for programming (via Arduino IDE or ESP-IDF), but also for safely charging the included 18650 lithium battery. Always double-check the battery polarity before inserting it into the internal holder to prevent damaging the power management circuit.

Technical Specifications

Microcontroller: ESP32-S3R8 (Xtensa 32-bit LX7 dual-core, up to 240MHz)
Memory: 512KB SRAM, 384KB ROM, 8MB PSRAM, 16MB Flash
Wireless Connectivity: 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE)
Display: 3.49-inch IPS LCD, 172×640 resolution, 350 cd/m² brightness, 1200:1 contrast
Display/Touch IC: AXS15231B (QSPI for display, I2C for touch)
Audio Codec: ES8311 DAC (Output) & ES7210 ADC (Input)
Sensors: QMI8658 6-axis IMU, PCF85063 RTC
Storage Expansion: TF Card Slot (Supports FAT32)
Power Supply: 5V via Type-C or included 18650 Lithium Battery
Dimensions: 98.50 x 34.80 x 31.80 mm (Outer Case)

Delivery Options

Local delivery within Hong Kong and in-store pickup.
Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
In-store pickup details (location and time) will be confirmed by email or phone message.
Delivery times are estimates and may be affected by weather or unforeseen circumstances.

FAQ Section

Does this board come with a battery and case?Yes, this specific "Case A" version includes a custom protective enclosure and an 18650 lithium battery that installs directly inside the case.
Can I program this display using the Arduino IDE?Yes, the ESP32-S3 chip is fully compatible with the Arduino IDE, as well as Espressif's official ESP-IDF framework for more advanced development.
What is the maximum capacity TF card I can use?While the exact maximum capacity depends on the firmware, the TF card must be formatted to FAT32 to ensure proper data reading and media playback.
Does the board have a built-in speaker?The board features an MX1.25 2-pin speaker header on the back for connecting an external speaker, which is driven by the onboard ES8311 DAC.

Target Users / Applications

IoT developers building smart home central control panels with voice recognition capabilities.
Makers prototyping portable, battery-powered AI assistants using online large language models.
STEM educators teaching advanced ESP32-S3 programming, UI design, and sensor integration.
Engineers designing handheld industrial testing equipment requiring a touch interface and IMU motion tracking.