Arduino

Introducing the latest additions to the esteemed Arduino UNO family, the Arduino UNO R4 range. Building upon the well-established features of the beloved UNO family, the UNO R4 range incorporates a robust 32-bit microcontroller and introduces remarkable new features, positioning them as exceptional tools for prototyping and learning endeavors. This is the Arduino UNO R4 Minima.

Key benefits of the Arduino UNO R4 Minima

The Arduino UNO range is renowned for its user-friendly nature, durability, and accessibility. With the UNO R4 Minima, this renowned platform has reached new heights, setting a benchmark for prototyping and learning tools. The 32-bit microprocessor offers increased memory, expanded connectivity options, and enhanced connectors compared to previous generations. Combined with its affordability, the UNO R4 Minima becomes an ideal choice for novice creators.

Powerful performance at an affordable price: The UNO R4 Minima delivers impressive performance without compromising affordability. While providing exceptional features, this device aims to make high-end technology accessible to all.

Compatibility with previous generations: UNO R4 retains the same pinout and 5V operating voltage as the UNO R3, ensuring seamless migration of existing shields or projects to the UNO R4.

Exciting new features: The UNO R4 introduces several impressive peripherals, including a 12-bit DAC, CAN BUS, OP AMP, and SWD port. These additions unlock a realm of possibilities for creators to develop innovative solutions and advanced projects.

Ample memory and increased speed: With sixteen times more memory and a clock speed three times faster, the UNO R4 Minima effortlessly handles precise calculations and complex projects with ease.

Reliable robustness: UNO R4 boards encompass various protective features, such as overcurrent protection on the pins of the RA4M1, and meticulous circuit design that mitigates wiring errors, reducing the risk of board damage. Additionally, the board can be powered up to 24V.

Efficient debugging capabilities: The UNO R4 Minima incorporates an onboard SWD port, offering a straightforward and reliable method for debugging any issues by simply connecting a third-party debugging probe.

Technical specifications

• MCU: R7FA4M1AB3CFM#AA0 (Arm cortex M4)
• Memory: 256KB Flash / 32KB SRAM
• Operating Voltage: 5V
• Input Voltage: 6-24V
• Clock Speed: 48 MHz
• Programming Port: USB-C
• Digital Pins: 14
• PWM: 6
• ADC: 6
• DAC: 1 (12 bit)
• SPI: 1
• I2C: 1
• CAN: 1

What's in the box?

1 x Arduino Uno Rev 4 Minima

You might be interested in a power supply, USB Type C cable or experimental platform for your new Uno.

Resources

• You can watch a YouTube video on the Minima by Explaining Computers
• Arduino Docs
• Schematics
• Datasheet

Tutorials

• Getting Started with Arduino  - UNO, good for 1st-time users.

FAQs

Can I use hardware compatible with the Arduino UNO R3 with the Arduino UNO R4 Minima?

Yes, the Arduino UNO R4 Minima was specifically designed to ensure compatibility with previous shields and compatible hardware developed for the Arduino UNO R3. The UNO R4 Minima maintains the same mechanical and electrical compatibility, allowing you to seamlessly use your existing shields and hardware with the new board. This makes it easy to upgrade to the UNO R4 Minima without the need for significant changes or adaptations to your projects.

Can I use my sketch developed for the UNO R3 in the UNO R4 Minima?

Yes, if your sketch was developed using the Arduino API. In case you are using instructions only available for the AVR architecture, some changes need to be made to ensure compatibility.

Are all libraries compatible with the UNO R3 also compatible with the UNO R4 Minima?

No, some UNO R3 libraries use instructions of the AVR architecture that are not compatible with the architecture of the UNO R4 Minima, however there are libraries that have already been ported as part of our early adopters program or are based on the Arduino API. 

Introducing the latest additions to the esteemed Arduino UNO family, the Arduino UNO R4 range. Building upon the beloved features of the UNO family, the UNO R4 range boasts a potent 32-bit microcontroller and remarkable new functionalities, making it an exceptional prototyping tool suitable for beginners and experienced electronics enthusiasts alike. This particular variant is the UNO R4 WiFi.

What sets the Arduino UNO R4 WiFi apart and makes it truly remarkable?

The Arduino UNO line is renowned for its user-friendly, robust, and accessible platform, and with the UNO R4 WiFi, it raises the bar even higher, establishing a new standard for prototyping and learning tools. Featuring a 32-bit microprocessor with increased memory, connectors, and connectivity options compared to previous generations, coupled with WiFi and Bluetooth Low Energy capabilities, a fully-addressable LED Matrix, Qwiic I2C connector, real-time clock (RTC), and diagnostics for runtime errors, the UNO R4 WiFi is the ideal solution for all your prototyping requirements.

Impressive New Features

The UNO R4 WiFi introduces a host of remarkable peripherals, including a 12-bit digital-to-analog converter (DAC), Controller Area Network (CAN) BUS, operational amplifier (OP AMP), and Serial Wire Debug (SWD) port. These additions unlock a realm of new possibilities, allowing makers to create innovative solutions and advanced projects.

Seamless Wireless Connectivity

With the UNO R4 WiFi, you can effortlessly embark on IoT projects. Equipped with the remarkable ESP32-S3-MINI coprocessor that enhances the capabilities of the RA4M1 microcontroller, the UNO R4 WiFi enables easy connection to the internet through its built-in WiFi and Bluetooth Low Energy functionality.

Onboard LED Matrix

The UNO R4 WiFi features a vibrant 96-dot LED matrix, perfectly suited for creative projects involving animations or visualizing sensor data without the need for additional hardware.

Qwiic I2C Connector

Including an industry-standard Qwiic I2C connector, the UNO R4 WiFi facilitates rapid prototyping. Not only that, it enables compatibility with a wide range of modules that can be connected via I2C, significantly expanding the capabilities of the UNO R4 and allowing for the effortless creation of customized projects.

Diagnostics for Runtime Errors

The UNO R4 WiFi incorporates a built-in error detection mechanism that alerts you to any operations that could potentially cause the board to crash. This ensures you can develop your solutions with peace of mind and minimize the risk of issues.

Backward Compatibility

UNO R4 maintains the same pinout and 5V operating voltage as the UNO R3, enabling easy migration of existing shields or projects to the UNO R4.

Ample Memory and Enhanced Clock Speed

With 16 times more memory and a clock speed three times faster, the UNO R4 Minima excels at precise calculations and effortlessly handles complex projects.

Reliable and Robust Device

UNO R4 boards incorporate several protective features, such as overcurrent protection on the pins of the RA4M1, and the circuitry is designed to prevent wiring errors, reducing the risk of board damage. Furthermore, the board can be powered up to 24V.

Efficient Debugging

The UNO R4 Minima boasts an onboard SWD port, offering a straightforward and reliable method for debugging any issues by simply connecting a third-party debugging probe.

Technical specifications

• MCU: R7FA4M1AB3CFM#AA0 (Arm cortex M4)
• Memory: 256KB Flash / 32KB SRAM
• Operating Voltage: 5V
• Input Voltage 6-24V
• Clock Speed: 48 MHz
• Programming Port: USB-C
• WiFi/BLE: ESP32-S3-MINI
• LED Matrix: 12x8 (96 red LEDs)
• Additional Connections: Qwiic Connector, OFF Pin, VRTC Pin
• Digital Pins: 14
• PWM: 6
• ADC: 6
• DAC: 1 (12 bit)
• SPI: 1
• I2C: 1
• CAN: 1

What's in the box?

1 x Arduino Uno Rev 4 WiFi

Resources

• Arduino Docs
• Schematics
• Datasheet