🚀 ESP32-S3 3.49-inch Touch LCD Development Board The ESP32-S3 3.49-inch Touch LCD Development Board is a high-performance, highly integrated solution featuring a 3.49-inch IPS capacitive touch display. It includes QSPI display connectivity, audio input/output capabilities, and supports AI interaction and offline voice control. 🔋 Version Options This development board is available in several configurations to suit your project needs: 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 Display Panel LCD Display Size 3.49 inch Resolution 172 × 640 Display Colors 16.7M Brightness 350 cd/m² Contrast Ratio 1200:1 Display Interface QSPI Driver IC AXS15231B Touch Interface I2C Touch Type Capacitive touch 🛠️ Key Features The ESP32-S3-Touch-LCD-3.49 is a high-performance microcontroller development board designed by Waveshare. ESP32-S3R8 Xtensa 32-bit LX7 dual-core processor, up to 240MHz Wi-Fi 2.4GHz (802.11 b/g/n) and Bluetooth 5 (LE) 512KB SRAM + 384KB ROM, onboard 8MB PSRAM + external 16MB Flash 3.49-inch IPS capacitive touch display, 172×640 resolution, 16.7M colors Dual microphone array with noise reduction + echo cancellation AXS15231B LCD & touch controller (QSPI + I2C) QMI8658 6-axis IMU (accelerometer + gyroscope) PCF85063 RTC chip Programmable PWR + BOOT buttons Battery support: 3.7V MX1.25 Lithium or 18650 holder TF card slot for storage & media playback 22PIN expansion pads for external modules 🎵 Onboard Audio Codec Supports high-quality audio processing, providing clear and high-fidelity input/output. 🤖 Supports AI Speech Interaction Allows access to online large model platforms (DeepSeek, Doubao, etc.), expanding AI-powered applications. 🌈 IPS Display Panel Excellent display performance with 16.7M colors and wide viewing angle. 👆 Capacitive Touch Ideal for smart device development, enabling intuitive human-machine interaction. 🧰 Two Case Options Choose between Case A and Case B to suit your needs. (Refer to package content for detailed part list.) 💻 Development Support Compatible with ESP-IDF and Arduino IDE, with rich SDK resources. 🌐 Wi-Fi and BLE 5 Support Wi-Fi 2.4GHz with 40MHz bandwidth Bluetooth 5 LE + Mesh for robust connectivity 📋 What's On Board ESP32-S3R8Wi-Fi and Bluetooth SoC, up to 240MHz operating frequency, with onboard 8MB PSRAM Onboard antennasupports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE) TCA9554PWR8-bit I2C GPIO expansion chip W25Q128JVSI16MB Flash memory ES8311 DAC audio encoding chiphigh-performance, low-power audio DAC ES7210 ADC audio decoding chiphigh-performance, low-power audio ADC, supports multiple microphone inputs QMI86583-axis gyroscope and 3-axis accelerometer, suitable for applications such as attitude sensing and motion recognition Dual microphone array designdual-digital microphone, supports more advanced voice interaction functions TF card slotsupports FAT32-formatted TF card for data expansion RESET button (back side)press the BOOT, then click the RESET button to enter download mode PWR power button (back side)Enables power control via software configuration when using Lithium battery for power supply BOOT button (back side)press the BOOT, then click the RESET button to enter download mode MX1.25 2PIN speaker header (back side)audio signal output, for connecting external speaker IPEX1 connectorfor connecting external antenna, enabled via resoldering an onboard resistor 22PIN 2.54mm pitch through-hole padsfor connecting external modules and enabling functional expansion Type-C portfor program burning and log printing PCF85063RTC clock chip, supports time retention 📐 Outline Dimensions ESP32-S3-Touch-LCD-3.49 ESP32-S3-Touch-LCD-3.49B
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