ESP32-S3-Touch-LCD-3.49-EN

ESP32-S3-Touch-LCD-3.49-EN

1. ESP32-S3-Touch-LCD-3.49 x1
2.  

ESP32-S3 High-Performance Development Board With 3.49inch IPS Capacitive Touch Display, 172 × 640 Resolution, Integrated With ESP32-S3R8 Dual-core Processor

ESP32-S3 3.49inch Touch LCD
development board

QSPI Display, Audio Input/Output, Supports AI interaction and offline voice control

Version Options

ESP32-S3-Touch-LCD-3.49
Case A version, comes with a 18650 Lithium battery
(can be installed inside the case)

ESP32-S3-Touch-LCD-3.49-EN
Case A version, without battery

ESP32-S3-Touch-LCD-3.49B
Case B version, comes with a 3.7V Lithium polymer battery
(can be installed inside the case)

ESP32-S3-Touch-LCD-3.49B-EN
Case B version, without battery

LCD parameters

Features

The ESP32-S3-Touch-LCD-3.49 is a high-performance, highly integrated microcontroller development board designed by Waveshare. Onboard 3.49inch capacitive touch IPS display, highly integrated power management IC, 6-axis IMU (3-axis accelerometer and 3-axis gyroscope), RTC chip, low-power audio codec IC, echo cancellation circuit, and so on, which makes it easy for you to develop and integrate into the products quickly.

• Equipped with ESP32-S3R8 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 of SRAM and 384KB ROM, with onboard 8MB PSRAM and an external 16MB Flash memory
• Onboard 3.49inch IPS capacitive touch display for clear color picture display, 172 × 640 resolution, 16.7M color
• Equipped with dual microphone array with noise reduction and echo cancellation circuit, suitable for accurate speech recognition and near/far-field wake-up
• Built-in AXS15231B LCD & touch controller, using QSPI and I2C interfaces for communication respectively
• Onboard QMI8658 6-axis IMU (3-axis accelerometer and 3-axis gyroscope) for detecting motion gestures, counting steps, etc.
• Onboard PCF85063 RTC chip for RTC functionality
• Onboard PWR and BOOT programmable buttons for easy custom function development
• Onboard 3.7V MX1.25 Lithium battery recharge/discharge header or 18650 Lithium battery holder
• Onboard TF card slot for extended storage and fast data transfer, suitable for applications such as data recording and media playback, simplifying circuit design
• Reserved 22PIN 2.54mm pitch through-hole pads for easy connection to external modules or functional expansion, enhancing development flexibility.

Onboard audio codec

Supports high-quality audio processing, providing clear and high-quality audio input and output

Supports AI Speech Interaction

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

IPS Display Panel

Excellent display performance, 16.7M color, wide viewing angle

Capacitive touch

Suitable for various smart device development, enabling human-machine interaction

Two Case options

for reference only, please refer to the package content for detailed part list.

Supports ESP-IDF, Arduino IDE

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

Wi-Fi and BLE 5 support

ESP32-S3 integrates 2.4 GHz Wi-Fi (802.11 b/g/n) with 40 MHz of bandwidth support,
Its Bluetooth Low Energy subsystem supports Bluetooth 5 (LE) and Bluetooth Mesh

What's On Board

1. ESP32-S3R8
   Wi-Fi and Bluetooth SoC, up to 240MHz operating frequency, with onboard 8MB PSRAM
2. Onboard antenna
   supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE)
3. TCA9554PWR
   8-bit I2C GPIO expansion chip
4. W25Q128JVSI
   16MB Flash memory
5. ES8311 DAC audio encoding chip
   high-performance, low-power audio DAC
6. ES7210 ADC audio decoding chip
   high-performance, low-power audio ADC, supports multiple microphone inputs
7. QMI8658
   3-axis gyroscope and 3-axis accelerometer, suitable for applications such as attitude sensing and motion recognition
8. Dual microphone array design
   dual microphone, supports more advanced voice interaction functions

9. TF card slot
   supports FAT32-formatted TF card for data expansion
10. RESET button (back side)
    press the BOOT, then click the RESET button to enter download mode
11. PWR power button (back side)
    Enables power control via software configuration when using Lithium battery for power supply
12. BOOT button (back side)
    press the BOOT, then click the RESET button to enter download mode
13. MX1.25 2PIN speaker header (back side)
    audio signal output, for connecting external speaker
14. IPEX1 connector
    for connecting external antenna, enabled via resoldering an onboard resistor
15. 22PIN 2.54mm pitch through-hole pads
    for connecting external modules and enabling functional expansion
16. Type-C port
    for program burning and log printing
17. PCF85063
    RTC clock chip, supports time retention

outline dimensions

ESP32-S3-Touch-LCD-3.49

ESP32-S3-Touch-LCD-3.49B

Resources & Services

Wiki: www.waveshare.com/wiki/ESP32-S3-Touch-LCD-3.49