Waveshare ESP32-S3 Mini Development Board – S3FH4R2 Dual Core

Take your embedded projects to the next level with the ESP32-S3 Mini Development Board (S3FH4R2). Built around the powerful dual-core Xtensa LX7 processor, this compact module combines high-performance computing, integrated Wi-Fi & Bluetooth 5 (LE), and a rich set of peripherals — all in a tiny, breadboard-friendly footprint. Whether you're building IoT devices, wireless sensors, smart home controllers, or wearable prototypes, this board delivers the flexibility and performance you need.

Key Features

Dual-Core Xtensa LX7 CPU — Up to 240 MHz clock speed for responsive, real-time processing
Integrated Wi-Fi (2.4 GHz) & Bluetooth 5 (BLE) — Seamless wireless connectivity out of the box
34 Programmable GPIO Pins — Maximum flexibility for connecting sensors, actuators, displays, and more
Rich Peripheral Support — Includes 4×SPI, 2×I2C, 3×UART, 2×I2S, 2×ADC for versatile interfacing
Flexible Clock & Power Control — Supports multiple low-power modes for battery-efficient, multi-scene applications
USB Serial Full-Speed Controller — Simplifies firmware flashing and serial debugging via a single USB connection
4 MB Flash / 2 MB PSRAM (S3FH4R2) — Ample storage and memory for complex applications and OTA updates
Compact Mini Form Factor — Designed for space-constrained projects without sacrificing functionality
Arduino & MicroPython Compatible — Get started quickly with your preferred development environment

What's in the Box

1 × ESP32-S3 Mini Development Board (S3FH4R2)

Ideal For

IoT sensor nodes and smart home automation
Wireless data loggers and remote monitoring systems
Wearable electronics and battery-powered gadgets
Robotics controllers and motor driver interfaces
Rapid prototyping and maker projects

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Frequently Asked Questions

Q: What processor does the ESP32-S3 Mini Development Board S3FH4R2 use?

A: The ESP32-S3 Mini S3FH4R2 features a dual-core Xtensa LX7 processor running at up to 240 MHz, paired with integrated Wi-Fi (2.4 GHz) and Bluetooth 5 (BLE), making it one of the most capable compact microcontroller modules available for IoT and embedded development.

Q: How many GPIO pins does the ESP32-S3 Mini board offer?

A: The board provides 34 programmable GPIO pins that support a wide range of peripheral interfaces, including 4×SPI, 2×I2C, 3×UART, 2×I2S, and 2×ADC channels — giving you exceptional flexibility for connecting sensors, displays, communication modules, and actuators.

Q: What development environments are compatible with this ESP32-S3 board?

A: The ESP32-S3 Mini Development Board is compatible with the Arduino IDE, ESP-IDF (Espressif's official framework), and MicroPython, allowing beginners and experienced developers alike to start building quickly without a steep learning curve.

Q: What are the power management capabilities of the S3FH4R2 module?

A: The S3FH4R2 supports flexible clock and module power control, enabling integration of multiple low-power operating modes. This makes it well-suited for battery-operated, energy-conscious applications such as wireless sensors and portable IoT devices.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.