Arduino is Back to the Future with the UNO R4

Arduino is Back to the Future with the UNO R4

New Products |
By Wisse Hettinga

The new announced revision of the iconic UNO board, which will expand the concept of the open-source brand’s most iconic and popular product

The Arduino UNO R4 preserves the well-known features of the UNO family – standard form factor, shield compatibility, 5V operating voltage, outstanding robustness – while offering no less than a 32-bit Cortex®-M4 and a 3-to-16x increase in clock speed, memory and flash storage.

This leap forward starts with a new processor by Renesas, a global leader in microcontrollers, analog, power and SoC products. While over 10 million users have enjoyed playing and working with Arduino UNO R3’s 8-bit microcontroller for more than a decade, the new RA4-series MCU will open up endless new project opportunities for more advanced makers, and bring the board up to speed with current standards.

One of the first Arduino Uno’s with the names of the developers in the upper left corner

The UNO R4 will come in two versions – UNO R4 WiFi and UNO R4 Minima – offering unprecedented performance and possibilities for the maker community.

The WiFi version comes with an Espressif S3 WiFi module, expanding creative opportunities for makers, educators, and hobbyists alike; while the UNO R4 Minima provides a cost-effective option for those seeking the new microcontroller without additional features.

In details, the new Arduino UNO R4 features the Renesas RA4M1 (Arm Cortex®-M4) running at 48MHz, which provides a 3x increase over the UNO R3. In addition to that, SRAM went from 2kB to 32kB, and flash memory went from 32kB to 256kB to accommodate more complex projects. In addition, following the requests from the community, the USB port was upgraded to the USB-C and maximum power supply voltage was increased to 24V with an improved thermal design. The board provides a CAN bus, which allows users to minimize wiring and execute different tasks in parallel by connecting multiple shields. Finally, the new board includes a 12-bit analog DAC. 
All in all, Arduino UNO R4 is the answer to the requests for improvement and updates the developer and maker community has been advancing, making it easier than ever to get started with Arduino.

Find the announcement and specs at –

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