Introducing the Arduino UNO R4! – News

Arduino is back to introduce their new Qwiic-compatible UNO R4 boards!




Mark June 26th as an auspicious day, because Arduino has announced their new UNO R4! SparkFun is pleased to help bring you these two new boards, as well as a new kit built to support these two new boards, the UNO R4 WiFi and the UNO R4 Minima. The Arduino UNO R4 is the next generation of Arduino, and each version packed with new features and improvements that make it the most powerful and versatile Arduino yet.

The new horizon for makers

Your user-friendly, accessible UNO just took a quantum leap forward: Arduino UNO R4 is a
32-bit microprocessor offering more speed, memory, connectors and connectivity options than
any version of the board before. Out of this world, and into the future.

Set a new standard

The UNO R4 preserves the standard form factor, shield compatibility, 5V power supply and robustness of the UNO range while offering no less than a 32-bit Cortex® M4 and a 15-fold increase in memory. The best prototyping and learning tool for anyone just got better.

Double up on innovation

Choose between the lightweight UNO R4 Minima and the full-fledged UNO R4 WiFi depending on your skill level, general budget and the project you have in mind. Both include limitless ease of use and the support of our stellar community.

Arduino UNO R4 WiFi

In stock



The UNO universe expands with the Arduino UNO R4 WiFi: the same industry-standard form factor at 5V operating voltage, but with the enhanced performance of a RA4M1 32-bit microcontroller by Renesas with ESP32-S3-MINI coprocessor – for increased computational power, memory and speed – as well as Wi-Fi® and Bluetooth® connectivity, a 12 x 8 LED matrix, and a Qwiic connector.

Arduino UNO R4 Minima

In stock



Arduino’s continued commitment to making technology accessible to everyone was the inspiration behind the Arduino UNO R4 Minima: the new addition to the brand’s community-supported ecosystem offers powerful technology at an affordable price. Packing more computational power, memory and speed in the familiar form factor of the UNO at 5V operating voltage, it allows users to easily upgrade projects made with the UNO R3 or the Leonardo. What’s more, thanks to a RA4M1 microcontroller by Renesas, it can leverage two new off-the-shelf peripherals, CAN BUS and (12 bit) DAC: perfect for automation or audio projects.

The SparkFun Arduino UNO R4 WiFi Qwiic Kit is a great way to get started with Arduino and the Qwiic-connect system. This kit includes everything you need to build a WiFi-enabled project, including an Arduino UNO R4 board, an assortment of Qwiic-enabled sensors and input boards, a Qwiic OLED Display, and a variety of other components to get you connected. Hooking up a handful of inputs and outputs to a Arduino UNO R4 has never been so easy.

We’re pretty excited to carry these new boards from Arduino, as well as devlop the first kit in our catalog to use them! Please keep in mind that the Arduino UNO R4 WiFi and the SparkFun Arduino UNO R4 WiFi Qwiic Kit are available for pre-order (the Minima is available to ship today, though!). We hope to start shipping these Arduino UNO R4 products within the next few weeks. Orders will be fulfilled in the order they are received. If you are ordering these products alongside “Live/in-stock” products and want to receive these products ASAP, be sure to designate your order for split shipments in checkout.

The Arduino UNO R4 is the perfect platform for anyone who wants to create amazing things with electronics. It’s easy to use, powerful, and versatile, making it the perfect choice for beginners and experienced makers alike. As always, we can’t wait to see what you make. Shoot us a tweet @sparkfun, or let us know on Instagram, Facebook or LinkedIn. Have a great rest of your Monday and we hope you enjoy these new Arduino products!