Arduino Uno R4 WiFi

The Arduino Uno R4 WiFi modernizes the world—s most popular microcontroller board. A powerful Renesas RA4M1 32-bit ARM Cortex-M4 core delivers 5— the performance of the classic Uno, while built-in Wi-Fi and Bluetooth open the door to cloud-connected IoT projects. The onboard 12—8 LED matrix adds instant visual feedback for classrooms and rapid prototyping without extra components.

Key Specifications:

• Renesas RA4M1 48 MHz ARM Cortex-M4 (32-bit)
• 32 kB SRAM / 256 kB Flash
• ESP32-S3-MINI-1 co-processor for Wi-Fi 4 & Bluetooth 5 LE
• 12—8 red LED matrix (onboard)
• USB-C programming & power
• 5V tolerant digital pins (14— I/O)

Applications:

Education: The definitive upgrade path for schools currently teaching Uno R3. Compatible with existing shields while introducing 32-bit concepts and wireless connectivity.

Research:

Industry: OEM proof-of-concept for connected sensors, smart-button interfaces, and legacy-equipment retrofit with wireless data backhaul.