Description

Arduino Uno R4 Wifi Type-C Made In China

The Arduino Uno R4 WiFi Type-C is the revolutionary successor to the widely popular Arduino Uno family, designed to empower makers, students, educators, and engineers with more processing power, connectivity, and versatility than ever before. Combining the reliability of the classic Uno form factor with cutting-edge technology, the R4 WiFi introduces modern features such as a powerful 32-bit microcontroller, wireless connectivity, USB Type-C interface, and expanded functionality for advanced IoT and embedded applications.

If you have ever worked with the Arduino Uno R3, you’ll find the R4 WiFi to be a massive upgrade while still maintaining full compatibility with existing shields, sensors, and libraries. This makes it not only future-ready but also backward-compatible, bridging the gap between traditional Arduino projects and modern connected solutions.

Powerful 32-bit Processing with RA4M1 MCU

At the heart of the Arduino Uno R4 WiFi lies the Renesas RA4M1 32-bit ARM Cortex-M4 processor running at 48 MHz. This represents a significant leap from the 8-bit ATmega328P found in the R3. With increased processing power, larger memory, and better peripherals, this microcontroller enables users to tackle more complex tasks such as:

• Running real-time data processing algorithms

• Managing larger codebases and memory-intensive libraries

• Performing precise control for robotics and automation projects

• Enabling advanced IoT and edge-computing applications

Thanks to the expanded 256 KB of Flash memory and 32 KB of SRAM, developers can now work on larger sketches and store more complex variables without worrying about memory limitations.

Built-in WiFi and Bluetooth with ESP32-S3

One of the standout features of the Arduino Uno R4 WiFi is its integrated ESP32-S3 module, which provides both WiFi and Bluetooth Low Energy (BLE) connectivity. This opens the door to endless possibilities in IoT, smart devices, and connected projects. You can easily send sensor data to the cloud, control devices remotely, or integrate your projects into home automation systems.

A unique and innovative feature is the DIP switch, which allows you to switch the USB connection between the RA4M1 processor and the ESP32-S3. This means you can directly program either the main MCU or the ESP32 depending on your project requirements, giving developers unprecedented flexibility.

USB Type-C Interface

Say goodbye to outdated connectors—the Arduino Uno R4 WiFi uses USB Type-C, which provides faster and more reliable connections, better power delivery, and modern convenience. This change ensures compatibility with the latest laptops and devices while providing a more robust user experience.

Expanded Features and Onboard Peripherals

Unlike previous Uno boards, the R4 WiFi comes with several advanced onboard features that make prototyping easier and more versatile:

• 12-bit DAC (Digital-to-Analog Converter): Enables smooth analog signal generation for audio, waveform synthesis, and control applications.

• CAN Bus Support: Ideal for automotive and industrial applications where communication between multiple devices is essential.

• Real-Time Clock (RTC): Keep track of time and events even when powered down.

• Extra I/O pins and expanded functionality: More PWM channels, higher-resolution ADC, and faster communication interfaces.

• LED Matrix Display: A built-in 12×8 LED matrix allows for quick visual feedback, animations, and debugging directly on the board.

• Qwiic I²C connector: Makes it easy to expand with Qwiic-compatible sensors and modules without soldering.

These new hardware improvements make the Arduino Uno R4 WiFi more than just a beginner’s board—it is a professional-grade development platform.

Full Compatibility and Easy Migration

Despite its powerful new features, the Arduino Uno R4 WiFi maintains the classic Uno form factor and pinout compatibility. This ensures that most existing shields and accessories designed for the R3 will work seamlessly with the R4.

Additionally, the Arduino IDE has been updated to fully support the R4 series, making code migration straightforward. Developers can continue to use familiar libraries while also exploring new features offered by the upgraded hardware.

Perfect for IoT, Education, and Prototyping

The Arduino Uno R4 WiFi Type-C is an ideal board for a wide variety of applications:

• IoT Projects: Connect sensors and devices to the cloud using WiFi or Bluetooth.

• STEM Education: A powerful yet accessible tool for students learning electronics, coding, and robotics.

• Robotics & Automation: Control motors, servos, and sensors with precision and efficiency.

• Smart Devices: Build connected applications such as home automation, wearable devices, and data loggers.

• Prototyping & Research: A reliable platform for engineers and makers to test new ideas quickly.

Its combination of advanced features and simplicity makes it suitable for both beginners and professionals.

Key Features at a Glance

• Renesas RA4M1 32-bit ARM Cortex-M4 processor @ 48 MHz

• 256 KB Flash memory and 32 KB SRAM

• Integrated ESP32-S3 module with WiFi + Bluetooth connectivity

• DIP switch to program either RA4M1 or ESP32-S3

• USB Type-C connector for power and programming

• Onboard 12×8 LED matrix display

• 12-bit DAC, CAN bus support, and RTC

• Full compatibility with existing Arduino shields and libraries

• Qwiic connector for easy sensor expansion

Why Choose the Arduino Uno R4 WiFi Type-C?

The Arduino Uno R4 WiFi isn’t just an upgrade—it’s a game-changer. It preserves the simplicity and ease-of-use that made Arduino the most popular development platform in the world, while introducing powerful new features that allow users to tackle modern IoT and embedded challenges. Whether you’re a student starting your journey in electronics, a hobbyist building advanced projects, or an engineer developing prototypes, the Uno R4 WiFi Type-C is the perfect tool to bring your ideas to life.

Arduino Uno R4 WiFi Type-C data sheet