pgrade your maker projects with the Arduino UNO R4 WiFi—a powerhouse in the classic UNO layout. It features a high-speed 32-bit ARM Cortex‑M4 MCU (Renesas RA4M1) combined with an ESP32‑S3 for wireless connectivity. The board includes innovative hardware additions like a programmed LED matrix, Qwiic connector, CAN, 12-bit DAC, and more. Packaged with a stylish black USB‑C cable, it’s ready for modern development and seamlessly integrates into creative projects.
Technical Specifications
| Feature | Specification |
|---|---|
| Microcontroller | Renesas RA4M1 (Cortex‑M4, 48 MHz, 256 kB Flash, 32 kB SRAM, 8 kB EEPROM) |
| Wireless Connectivity | ESP32‑S3 (Wi‑Fi & Bluetooth LE) |
| Form Factor | UNO R3-compatible; USB‑C port |
| On-board Peripherals | 12×8 LED matrix, Qwiic connector, DAC, CAN, OP‑AMP, RTC support |
| Voltage Input Range | VIN, up to 24V; 5V logic |
| Connectivity Interfaces | PWM, I²C, SPI, UART, CAN, HID (USB) |
What’s in the Box
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1 × Arduino UNO R4 WiFi board
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1 × Black USB‑C to USB‑A Cable (included)
Key Benefits
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All-in-one IoT Platform: Wi‑Fi and BLE onboard, plus visual feedback with LED matrix
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Next-Gen Processing: Faster, more memory-efficient 32-bit MCU
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Shield Compatibility Maintained: Same form factor as UNO R3
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Modern Connectivity: USB‑C port and HID support for plug-and-play PC interfacing
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Ready to Prototype: Qwiic, CAN, DAC, and RTC connectivity expand design possibilities

