Arduino UNO R4 WIFI

The Arduino UNO R4 WiFi is an Arduino UNO board in the standard UNO form factor with built-in wireless connectivity and onboard display capability. It combines the Renesas RA4M1 main processor with the ESP32-S3 wireless co-processor for electronics, robotics, automation, prototyping, and IoT development. The board includes a 12x8 LED matrix, a Qwiic connector, and USB Type-C with HID support. It also provides multiple communication interfaces and a set of digital and analog I/O resources for development work.

This Arduino UNO R4 WiFi product page description includes the key board-level specifications in a clear, engineering-oriented format. The name and core category keywords appear naturally for search relevance.

Features of Arduino UNO R4 WiFi Board

• Renesas RA4M1 main processor
• Arm Cortex-M4 core
• 48 MHz operating frequency
• ESP32-S3 wireless co-processor
• Wi-Fi 802.11 b/g/n support
• Bluetooth LE 5.0 support
• 12x8 built-in LED matrix
• USB Type-C with HID support
• Qwiic connector for I2C connections
• Standard UNO form factor

Specifications of Arduino UNO R4 WiFi Board

• Main Processor: Renesas RA4M1
• Main Processor Core: Arm Cortex-M4
• Main Processor Frequency: 48 MHz
• Wireless Co-Processor: ESP32-S3-MINI-1-N8
• Wireless Standard: Wi-Fi 802.11 b/g/n
• Bluetooth Version: Bluetooth LE 5.0
• RA4M1 Flash Memory: 256 KB
• RA4M1 RAM: 32 KB
• ESP32-S3 ROM: 384 KB
• ESP32-S3 SRAM: 512 KB
• ESP32-S3 External Memory Support: QSPI
• LED Matrix: 12x8
• Built-In LEDs: 96 monochrome LEDs
• Digital I/O Pins: 14
• PWM Support: Some digital I/O pins
• Analog Input Pins: 6
• ADC Resolution: 14-bit
• Analog Output (DAC): 1
• DAC Resolution: 12-bit
• Communication Interfaces: UART
• Communication Interfaces: I2C
• Communication Interfaces: SPI
• Communication Interfaces: CAN bus
• USB Port: USB Type-C
• USB Feature: HID support
• Qwiic Connector: I2C connection
• Operating Voltage: 5V
• Input Voltage (VIN): 6-24V
• Max Current per I/O Pin: 8 mA
• Dimensions: 68.85 × 53.34 mm
• Package Type: Standard UNO form factor

How to Use Arduino UNO R4 WiFi Board

1. Connect the board through the USB Type-C port.
2. Use the digital I/O pins, analog input pins, communication interfaces, or Qwiic connector as needed for your project.
3. Power the board within the specified operating voltage or VIN range.

More Info

• The board includes runtime error diagnostics on the LED matrix.
• The board supports HID behavior over USB.