Arduino UNO R4, a giant step for an open source community


The UNO R4 will come in two versions, UNO R4 WiFi and UNO R4 Minima.

In recent years, modular electronics have become increasingly popular between amateurs and professionals. The concept of building electronic systems from pre-manufactured, interchangeable components offers many advantages, including faster prototyping, easier maintenance, and greater design flexibility.

Uno of the most popular modular electronic systems and widely used ands the Arduino platform, It provides an easy-to-use way to create interactive electronic projects.

Arduino has announced the release of the Arduino UNO R4, the successor to the UNO R3 and what the company says is a "huge leap forward" for the popular series of microcontrollers.

The ONE R4 will retain the same form factor, shield compatibility, and 5V operating voltage than other members of the UNO family. Under the hood is a 4-bit Renesas RA1M4 Cortex-M32 processor. it runs at 48 MHz, allowing it to work three times faster than the UNO R3.

"On top of that," says one ad, "SRAM went from 2kB to 32kB, and flash memory went from 32kB to 256kB to accommodate more complex projects." In total, Arduino says, the UNO R4 will boast a three- to 16-fold increase in clock speed, memory, and flash storage.

Arduino announced:

We at Arduino are delighted to announce a groundbreaking new revision of the iconic UNO board, which will expand the concept of the open source brand's most iconic and popular product, while giving the maker community a long-awaited upgrade in terms of performance. and possibilities.

In fact, the Arduino UNO R4 retains the well-known features of the UNO family (standard form factor, shield compatibility, 5V operating voltage, exceptional robustness), while offering nothing less than a high-performance Cortex®-M4. 32-bit and a 3- to 16-fold increase in clock speed, memory, and flash storage.

The new board, which it will be available in Wi-Fi and “economy” Minima versions, it comes with a 12-bit analog DAC, plus other performance and quality-of-life upgrades like a USB-C port and a maximum power supply increase to 24V. Additionally, a CAN bus and SPI port allow users to "minimize wiring and run different tasks in parallel by connecting multiple shields."

The WiFi version comes with an Espressif S3 WiFi module, expanding creative possibilities for creators, educators, and hobbyists, while the UNO R4 Minima is a cost-effective option for those looking for the new microcontroller without the added features.

Arduino UNO R4 is equipped with the Renesas RA4M1 at 48 MHz (3 times compared to the UNO R3), in addition, the SRAM has been increased from 2 to 32 KB and the flash memory from 32 to 256 KB to be able to carry out more complex projects.

On the other hand, it is mentioned that USB port upgraded to USB-C and maximum supply voltage increased to 24V with an improved thermal design. The board provides a CAN bus, allowing users to minimize wiring and run different tasks in parallel by connecting multiple displays. Finally, the new card includes a 12-bit analog-to-digital converter.

Overall, the Arduino UNO R4 is the answer to requests for improvements and updates from the developer and maker community, making getting started with Arduino easier than ever.

As for hardware compatibility, the pinout, voltage, and form factor are unchanged from the UNO R3, ensuring maximum hardware and electrical compatibility with existing shields and projects. On the software side, a lot of effort is put into maximizing backwards compatibility with the most popular ones.

It is worth mentioning that the Arduino UNO R4 is scheduled for the end of May, when more details about its features will be revealed.


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