Waveshare ESP32-S3 High-Performance Development Board With Display is a versatile Dev board designed for IoT, AI, and embedded applications. Powered by the ESP32-S3R8 dual-core processor running up to 240MHz, this board integrates Wi-Fi, Bluetooth 5 (LE), and advanced peripherals. Featuring a 3.49-inch IPS capacitive touch Display with 172×640 resolution, the Waveshare ESP32-S3 Dev board provides smooth human-machine interaction, making it ideal for smart devices, robotics, and multimedia projects. With onboard audio codec, dual microphone array, 6-axis IMU, RTC, and TF card slot, the ESP32-S3 touch Display Dev board delivers a complete solution for rapid prototyping and product development. Features ESP32-S3 dual-core processor – Xtensa LX7, up to 240MHz, with 8MB PSRAM and 16MB Flash. Wi-Fi & Bluetooth 5 (LE) – Reliable wireless connectivity for IoT and smart devices. 3.49-inch IPS capacitive touch Display – 172×640 resolution, 16.7M colors, wide viewing angle. Audio support – Dual microphone array with noise reduction and echo cancellation, plus onboard audio codec. Motion sensing – Integrated QMI8658 6-axis IMU (accelerometer + gyroscope). RTC functionality – PCF85063 RTC chip for accurate timekeeping. Expandable storage – TF card slot for data logging and media playback. Battery options – Supports 18650 or 3.7V LiPo batteries with onboard charging/discharging circuit. Peripheral expansion – 22PIN 2.54mm pitch pads for external modules. Software support – Compatible with ESP-IDF, Arduino IDE, and comprehensive SDK resources. Specifications Specification Details Processor ESP32-S3R8 dual-core Xtensa LX7, up to 240MHz Memory 512KB SRAM, 384KB ROM, 8MB PSRAM, 16MB Flash Display 3.49-inch IPS capacitive touch, 172×640 resolution, 16.7M colors Brightness / Contrast 350 cd/m², 1200:1 Display Interface QSPI Touch Interface I²C Wireless Wi-Fi 802.11 b/g/n (2.4GHz), Bluetooth 5 (LE) Audio ES8311 DAC, ES7210 ADC, dual microphone array Sensors QMI8658 6-axis IMU RTC PCF85063 RTC chip Storage TF card slot Battery Support 18650 or 3.7V LiPo Expansion 22PIN 2.54mm pitch pads Interfaces Type-C USB, RS485, GPIO expansion Dimensions Compact board design Application IoT Development – Build smart home devices, sensors, and connected applications. AI Interaction – Supports speech recognition, wake-up functions, and AI model integration. Robotics – Use the ESP32-S3 Dev board with touch Display for robot control panels and motion sensing. Multimedia Projects – Audio playback, recording, and interactive touch interfaces. Education & Research – Ideal for learning embedded systems, wireless communication, and display integration. Prototyping & DIY – Rapid development of consumer electronics and touch Display Dev board projects. Part List Case A (the 18650 Lithium battery is optional) ESP32-S3-Touch-LCD-3.49 x1 18650 Lithium battery x1 Case B (the 3.7V Lithium polymer battery is optional) ESP32-S3-Touch-LCD-3.49B x1 3.7V Lithium polymer battery x1 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 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 Resources & Services Wiki: www.waveshare.com/wiki/ESP32-S3-Touch-LCD-3.49 More Detail Onboard Audio Codec The Waveshare ESP32-S3 High-Performance Development Board With Display integrates a high-quality audio codec, supporting clear audio input and output. This makes the ESP32-S3 Dev board suitable for multimedia and smart device projects requiring reliable sound processing. AI Speech Interaction Support The ESP32-S3 Dev board with touch Display supports AI speech interaction, allowing access to online large model platforms such as DeepSeek and Doubao. This feature enhances human-machine interaction for IoT and smart device applications. IPS Display Panel The Waveshare ESP32-S3 Dev board features a 3.49-inch IPS touch Display with 16.7M colors and wide viewing angles, delivering excellent visual performance for smart devices and embedded projects. Capacitive Touch The ESP32-S3 High-Performance Dev board integrates capacitive touch Display technology, enabling smooth human-machine interaction for various smart device developments. Two Case Options ESP-IDF & Arduino IDE Support The Waveshare ESP32-S3 Dev board with touch Display is compatible with ESP-IDF and Arduino IDE, offering comprehensive SDKs, tutorials, and resources to help developers easily get started. Wi-Fi and Bluetooth 5 (LE) Support The ESP32-S3 Dev board integrates 2.4GHz Wi-Fi (802.11 b/g/n) with 40MHz bandwidth and Bluetooth 5 (LE) with Mesh support, ensuring reliable wireless connectivity for IoT and touch Display applications.
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