Arduino® UNO R4 WiFi

The Arduino® UNO R4 WiFi takes the classic UNO platform to the next level by integrating powerful new features and wireless capabilities, making it perfect for a wide range of projects, from simple IoT applications to complex devices. This board combines the RA4M1 microcontroller from Renesas with the ESP32-S3 WiFi and Bluetooth module from Espressif, offering a versatile and feature-rich platform for makers.

Key Features

• Classic UNO Compatibility: Maintains the same form factor, pinout, and 5V operating voltage as the UNO R3, ensuring compatibility with existing shields and projects.

• Wireless Connectivity: Powered by the ESP32-S3, offering both Wi-Fi and Bluetooth capabilities, perfect for IoT projects and remote control via the Arduino IoT Cloud.

• Expanded Memory & Faster Processing: Upgraded memory and a faster clock speed, handling more complex tasks efficiently.

• On-board Peripherals: Includes a 12-bit DAC, CAN BUS, and OP AMP, adding flexibility for a range of designs.

• Extended Voltage Tolerance: Supports input voltages up to 24V, making it easier to integrate motors, LED strips, and other actuators with a single power source.

• HID Support: Can simulate a mouse or keyboard when connected via USB, allowing for easy keystrokes and mouse movements.

• Qwiic I2C Connector: Simplifies integration with the Qwiic ecosystem, offering quick connections to sensors, actuators, and other devices.

• RTC with Battery Support: Includes a VRTC pin to keep the real-time clock running and an OFF pin to turn the board off when needed.

• Integrated LED Matrix: A 12x8 LED matrix is built-in, perfect for displaying data, animations, or sensor readings without needing extra hardware.

• Runtime Error Diagnostics: Detects errors in the code and provides helpful hints to locate and fix issues.

Technical Specifications

• Microcontroller: Renesas RA4M1

• Wi-Fi/Bluetooth Module: ESP32-S3

• Digital I/O Pins: 14

• PWM Pins: 6

• Analog Input Pins: 6

• DAC: 12-bit DAC

• CAN BUS: Yes

• Operating Voltage: 5V

• Input Voltage: 7V to 24V

• Memory: Increased memory with a faster clock

• Clock Speed: Faster than previous UNO models

• LED Matrix: 12x8 red LED matrix

• Real-Time Clock (RTC): Supported with battery

• USB: Full-Speed USB Device and embedded Host

• Size: UNO form factor

• Weight: Lightweight and compact

The Arduino UNO R4 WiFi provides a wide range of features that open up endless possibilities for makers, from beginner to advanced levels. Whether you're building IoT devices, automating processes, or integrating sensors and actuators, the UNO R4 WiFi gives you the flexibility, connectivity, and power needed to take your projects to the next level.