What is the main difference between the Uno R4 WiFi and the Uno R4 Minima?

The Uno R4 WiFi includes an on-board ESP32-S3 for Wi-Fi and Bluetooth, plus an LED matrix. The Uno R4 Minima is a more cost-effective version without these features.

Is the Arduino Uno R4 series backward compatible with my old projects?

Yes, the Uno R4 boards maintain the same form factor, pinout, and 5V operating voltage as the UNO R3, ensuring compatibility with your existing shields and projects.

What is the Qwiic connector for?

The Uno R4 WiFi's Qwiic connector allows for quick plug-and-play integration with a vast ecosystem of I2C sensors and modules, including our own Arduino Modulinos.

How does the Uno R4 compare to the original Uno R3?

The Uno R4 is a significant upgrade with a faster 32-bit processor, more memory, and new features like a DAC and CAN Bus, while keeping the classic 5V operating voltage.

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Sponsored Ad – Arduino UNO R4 WiFi [ABX00087] - Microcontroller Dev Board with ESP32-S3 | Integrated Wi-Fi & Bluetooth | USB-C | Ideal for IoT & Education

Sponsored Ad – Arduino UNO R4 WiFi [ABX00087] - Microcontroller Dev Board with ESP32-S3 | Integrated Wi-Fi & Bluetooth | USB-C | Ideal for IoT & Education

Product ID: 546032781

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Details

Brand
Arduino
Model name
UNO R4 WiFi
RAM memory installed size
0.03 MB
CPU model
Core M Family
CPU speed
48 MHz

⚡Dual-core ARM Cortex-M4 + ESP32-S3

📶Wi-Fi & Bluetooth 5.0 connectivity

🔌Modern USB-C + CAN + Qwiic ports

Description

🚀 Elevate your IoT game with Arduino UNO R4 WiFi — where power meets wireless freedom!

DYNAMIC VISUAL FEEDBACK - Built-in 12x8 LED matrix lets your projects communicate instantly with vibrant, real-time displays.
PRECISION ANALOG CONTROL - Leverage the 12-bit DAC and OP-AMP for crystal-clear audio, sensor accuracy, and refined signal processing.
NEXT GEN CONNECTIVITY PORTS - Experience ultra-efficient programming and device linking with USB-C, CAN bus, and Qwiic connectors.
SEAMLESS WIRELESS INTEGRATION - Stay effortlessly connected with robust Wi-Fi and Bluetooth 5.0 for smart devices and remote control.
POWERHOUSE DUAL CORE PERFORMANCE - Harness the combined might of Renesas RA4M1 and ESP32-S3 for lightning-fast, multitasking IoT projects.

The Arduino UNO R4 WiFi is a cutting-edge microcontroller development board featuring a dual-core Renesas RA4M1 ARM Cortex-M4 and ESP32-S3 chip, delivering powerful processing and integrated Wi-Fi/Bluetooth 5.0 connectivity. Equipped with modern USB-C, CAN, and Qwiic connectors, it supports versatile, high-speed interfacing. Its 12-bit DAC and OP-AMP enable precise analog output, while the built-in 12x8 LED matrix provides immediate visual feedback, making it ideal for advanced IoT, education, and real-time control applications.

Specifications

Brand	Arduino
Product Dimensions	8 x 20 x 26 cm; 20 g
Item model number	ABX00087
Manufacturer	Arduino
Processor Brand	Espressif
Processor Count	1
Wireless Type	Bluetooth
Wattage	100 watts
Are Batteries Included	No
Number of Lithium Metal Cells	1
Item Weight	20 g
Guaranteed software updates until	unknown

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