Arduino UNO R4 WiFi

The Arduino UNO R4 WiFi combines the computing power and new peripherals of the Renesas RA4M1 microcontroller with the wireless connectivity of the Espressif ESP32-S3.

It includes an integrated 12x8 LED matrix, a QWIIC connector, a VRTC terminal for backup battery, and an OFF terminal.

You can easily upgrade your project and add wireless connectivity.

Hardware compatibility with the UNO form factor

The UNO R4 WiFi maintains the same form factor, pinout, and 5V operating voltage as its predecessor, the UNO R3, ensuring a smooth transition for existing shields and projects.

Expanded memory and faster clock rate

The UNO R4 WiFi has more memory and a higher clock frequency, allowing for more precise calculations.

Additional peripheral features

• 12-bit DAC
• CAN-BUS
• OP AMP

HID support

Built-in HID support allows mouse or keyboard simulation via USB-C.

Wi-Fi® and Bluetooth®

The UNO R4 WiFi features an ESP32-S3 module, providing wireless connectivity. Combined with the Arduino IoT Cloud, you can monitor and control your projects remotely.

QWIIC connector

The UNO R4 WiFi features a QWIIC I2C connector, allowing easy connection to the QWIIC ecosystem.

RTC support with battery power

The UNO includes additional terminals, such as the "OFF" terminal to turn off the board and the "VRTC" terminal that powers the internal real-time clock.

LED Matrix

The UNO R4 WiFi features a bright 12x8 LED matrix, ideal for creative projects with animations or sensor data display without the need for additional hardware.

Runtime error diagnostics

The UNO R4 WiFi includes a recovery mechanism that detects runtime crashes and provides detailed explanations and suggestions regarding the line of code that caused the crash.

Specifications

• USB-C connector
• Renesas RA4M1 (Cortex M4)
• HID interface (mouse or keyboard simulation)
• improved power supply (up to 24 V via VIN)
• CAN bus
• DAC (12 bits)
• OP AMP
• WiFi/BT LE (ESP32-S3)
• fully addressed LED matrix (12x8 matrix)
• QWIIC I2C connector
• RTC (with battery buffer support)
• runtime error diagnostics