Arduino UNO R4

Enhanced and improved, the Arduino UNO R4 is armed with a powerful 32-bit microcontroller courtesy of Renesas. Brace yourself for increased processing power, expanded memory, and a whole new level of onboard peripherals. The best part? Compatibility with existing shields and accessories remains intact, and there's no need to make any changes to the standard form factor or 5V operating voltage.

Joining the Arduino ecosystem, the UNO R4 is a trusty addition suitable for both beginners and seasoned electronics enthusiasts. Whether you're just starting out or looking to push the boundaries of your projects, this robust board delivers reliable performance every time.

The Arduino UNO R4 WiFi combines the processing power and exciting new peripherals of the RA4M1 microcontroller from Renesas with the wireless connectivity power of the ESP32-S3 from Espressif. On top of this, the UNO R4 WiFi offers an onboard 12x8 LED matrix, Qwiic connector, VRTC, and OFF pin, covering all potential needs makers will have for their next project.

With the UNO R4 WiFi, you can easily upgrade your project and add wireless connectivity to expand the reach of your current setup. If this is your first project, this board has everything you need to spark your creativity.

Here's what the UNO R4 brings to the table:

• Hardware compatibility with UNO form factor: The UNO R4 maintains the same form factor, pinout, and 5V operating voltage as its predecessor, the UNO R3. This ensures a seamless transition for existing shields and projects, leveraging the extensive and unique ecosystem already established for the Arduino UNO.
• Expanded memory and faster clock: Prepare for more precise calculations and the ability to handle complex projects with ease. The UNO R4 boasts increased memory and a faster clock speed, empowering you to tackle demanding tasks effortlessly.
• Extra onboard peripherals: The UNO R4 introduces a range of onboard peripherals, including a 12-bit DAC, CAN BUS, and OP AMP. These additional components provide you with expanded capabilities and flexibility in your designs.
• Extended 24V tolerance: The UNO R4 now supports a wider input voltage range, allowing power supplies up to 24V. This enables seamless integration with motors, LED strips, and other actuators, simplifying your projects by utilizing a single power source.
• SWD connector: Debugging is a critical aspect of any project. Simply connect an external debugger to the UNO R4 and effortlessly monitor the inner workings of your system. Stay in control and gain valuable insights.
• HID support: The UNO R4 comes with built-in HID (Human Interface Device) support, enabling it to simulate a mouse or keyboard when connected to a computer via a USB cable. This convenient feature makes it a breeze to send keystrokes and mouse movements to a computer, enhancing usability and functionality.

Here are the additional features of UNO R4 WiFi:

• Wi-Fi® and Bluetooth®: The UNO R4 WiFi hosts an ESP32-S3 module, enabling makers to add wireless connectivity to their projects. Combined with the Arduino IoT Cloud, makers can monitor and control their projects remotely.
• Qwiic connector: The UNO R4 WiFi features a Qwiic I2C connector, allowing easy connection to nodes from the extensive Qwiic ecosystem. Adapter cables also enable compatibility with sensors and actuators based on other connectors.
• Support for battery-powered RTC: The UNO R4 WiFi includes additional pins, including an "OFF" pin to turn off the board and a "VRTC" pin to keep the internal Real-Time Clock powered and running.
• LED matrix: The UNO R4 WiFi incorporates a bright 12x8 red LED matrix, ideal for creative projects with animations or plotting sensor data, eliminating the need for additional hardware.
• Diagnostics for runtime errors: The UNO R4 WiFi includes an error-catching mechanism that detects runtime crashes and provides detailed explanations and hints about the code line causing the crash.

With all these features packed into the well-known UNO form factor, now is the perfect time to upgrade your project or embark on your maker journey. The UNO R4 offers unparalleled versatility and possibilities for makers of all levels.

• Cheat Sheet: A reference to all technical features on this board, with pointers to additional documents.
• USB-C: The UNO R4 Minima is the first UNO to feature a USB-C® connector.
• Real-Time Clock: Keep track of time & date and set alarms with the built-in RTC.
• Digital-to-Analog Converter (DAC): Use the onboard 12-bit DAC to build sophisticated audio projects.
• Mouse/Keyboard Emulation (HID): Build game controllers by emulating a mouse/keyboard.
• Power up to 24V: Power your UNO R4 Minima board through the VIN Pin with any voltage between 6-24 V.
• CAN Bus: Connect your board to other CAN devices. This requires an external transceiver.
• ADC Resolution: This board supports analog read resolutions at up to 14-bit.

Specifications:

• Arduino® UNO R4:
  • Minima
  • WiFi
• Microcontroller: Renesas RA4M1 (Arm® Cortex®-M4)
• Programming Port: USB-C
• Pins:
  • 14 x Digital I/O Pins
  • 6 x Analog input pins
  • 1 x DAC
  • 6 x PWM
• Communication:
  • 4 x UART
  • 1 x I2C
  • 1 x SPI
  • 1 x CAN Bus
• Power:
  • Circuit Operating Voltage: 5V (ESP32-S3 is 3.3 V)
  • Input Voltage (VIN): 6-24V
  • DC Current per I/O Pin: 8mA
• Clock Speed:
  • Main core: 48MHz
  • ESP32-S3: up to 240MHz
• Memory:
  • RA4M1: 256 kB Flash, 32 kB RAM
  • ESP32-S3: 384 kB ROM, 512 kB SRAM
• Dimensions: 68.85mm x 53.34mm

• 1 x Arduino UNO R4 Minima
• 1 x Acrylic Base (not shown in the picture)

• 1 x Arduino UNO R4 WiFi
• 1 x Acrylic Base (not shown in the picture)

• Arduino Uno R4 Minima
  • Arduino Docs
  • Schematics
  • Datasheet
• Arduino Uno R4 WiFi
  • Arduino Docs
  • Schematics
  • Datasheet