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Top-down view of the Arduino UNO R4 WiFi board, highlighting the RA4M1 microcontroller, ESP32-S3 module, 12x8 LED matrix, USB-C port, and power jack.

Arduino Online Shop

4.5 (123)

Arduino® UNO R4 WiFi

Name: Arduino Online Shop Arduino® UNO R4 WiFi - Arduino® UNO R4 WiFi
Brand: Arduino Online Shop
SKU: 42871580917967
Price: 27.5 USD
Availability: InStock
Rating: 4.5127 (190 reviews)

4.5 (1,234)

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$27.50

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Description

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 on-b...

Reviews

4.5

275 ratings

The Uno is one of my favorite boards. I can quickly go from breadboard verification to the general pinout and then scale up for the other boards like the Giga R1 or other more powerful boards.

Trey · April 15, 2026