Arduino Uno R4 WiFi Original Version

The new Arduino UNO R4 Development Board comes in two versions: the UNO R4 WiFi and the UNO R4 Minima. Powered by the Renesas RA4M1 (Arm Cortex®-M4) processor running at 48 MHz, which provides a 3x increase over the UNO R3.

Key upgrades include expanded SRAM (32KB) and Flash Memory (256KB) to handle more complex projects. Additionally, the USB port has been upgraded to USB-C, and the maximum input voltage has increased to 24V. The inclusion of a CAN bus and a 12-bit analog DAC enhances its versatility for modern applications.

The UNO R4 WiFi features an Espressif S3 WiFi module, enabling wireless connectivity for innovative projects, making it ideal for makers, educators, and hobbyists.

Based on the success of UNO R3, the UNO R4 board is the ideal prototype and learning tool for anyone. While retaining the well-known features of the UNO series, such as standard form factor, shield compatibility, 5V voltage, and robustness, new features have been added.

Thanks to its powerful design and reliable performance, the UNO R4 is a valuable addition to the Arduino ecosystem, suitable for beginners and experienced electronics enthusiasts alike to deploy their own projects.

Key Features

• Hardware compatibility ensures the same form factor, pinout, and 5V operating voltage as the UNO R3, enabling seamless transitions with existing shields and projects.
• Expanded memory and faster clock speed provide higher precision calculations and effortless handling of complex tasks.
• On-board peripherals include a 12-bit DAC, CAN Bus, and OP AMP, offering enhanced design flexibility.
• Extended voltage range supports input voltages from 6-24V, making it suitable for motors, LED strips, and actuators.
• HID support enables the board to function as a mouse or keyboard via USB, simplifying input simulations.
• Wireless connectivity is achieved through the ESP32-S3 module, providing Wi-Fi® and Bluetooth® capabilities for remote monitoring and control via Arduino IoT Cloud.
• QWIIC connector makes integrating sensors and actuators from the QWIIC ecosystem straightforward and efficient.
• Battery-powered RTC is supported with an OFF pin and VRTC pin to keep the Real-Time Clock running even when the board is powered down.
• LED matrix includes a bright 12×8 red LED array, perfect for animations and data visualization without requiring additional hardware.
• Built-in error diagnostics detect runtime issues and offer detailed feedback for debugging code errors.