Arduino UNO R4 EK WiFi | Renesas RA4M1 & ESP32-S3 | USB-C, CAN, DAC, OP AMP, Qwiic Connector, 12×8 LED Matrix

The Arduino UNO R4 EK WiFi is a next-generation development board designed for makers, hobbyists, and professionals who want seamless IoT connectivity and advanced prototyping features.

Built around the Renesas RA4M1 microcontroller and ESP32-S3 module, it offers Wi-Fi and Bluetooth support, making it ideal for connected projects. With a modern USB-C connector, robust CAN interface, integrated DAC, and onboard OP AMP, the board delivers reliable performance for a wide range of electronics applications.

The board also features a Qwiic I2C connector for plug-and-play sensor integration and a 12×8 LED matrix for vibrant visual displays. Compatible with UNO form factor, it maintains the same pinout and 5V logic as Arduino UNO R3, ensuring smooth transition and prototyping ease.

Key Features:

• UNO Form Factor Compatibility – same pinout & 5V logic as UNO R3

• Faster Performance – expanded memory and higher clock speed

• Onboard Peripherals – 12-bit DAC, CAN BUS, OP AMP

• 24V Input Tolerance – supports motors and LED strips

• HID Support – emulate mouse/keyboard via USB

• Wi-Fi & Bluetooth – powered by ESP32-S3 for IoT connectivity

• Qwiic I2C Connector – rapid sensor/actuator expansion

• Runtime Diagnostics – detects runtime errors with hints

Specifications:

• Microcontroller: R7FA4M1AB3CFM

• Processor: 48 MHz Arm Cortex-M4

• Flash Memory: 256 KB

• SRAM: 32 KB

• EEPROM: 8 KB

• Operating Voltage: 5V

• Input Voltage: 6–24V

• Peripherals: ADC (14-bit), CAN, DAC, MPU, RTC

• Connectivity: ESP32-S3 (Wi-Fi & Bluetooth)

• Shipping Weight: 0.03 kg

• Shipping Dimensions: 9 × 7 × 3 cm

Package Includes:
1 × Official Arduino UNO R4 EK WiFi – Made in India with Renesas RA4M1 / ESP32-S3, USB-C, CAN, DAC, OP AMP, Qwiic Connector, 12×8 LED Matrix

Ideal For: IoT projects, smart automation, electronics prototyping, embedded systems learning, robotics, and creative LED displays.