Attributes

Brand	-
Category	Electronic Components / Maker DIY / Development Boards & Control Boards
Origin	-
Microcontroller	Renesas RA4M1 (ARM Cortex-M4)
CPU Clock Speed	48 MHz
Operating Voltage	5V
Input Voltage Range	6-24V
Digital I/O Pins	14
Analog Input Pins	6
PWM Channels	12
Flash Memory	256 KB
SRAM	32 KB
Wireless Connectivity	Wi-Fi 4 (802.11 b/g/n) & Bluetooth 5.0

5 reviews

Anonymous

Mar 16, 2026

Rating: 5/5

Perfect for IoT projects

The Wi-Fi capability makes this so much better than the old UNO. Connected to my home network easily and the speed is noticeable.

Anonymous

Feb 24, 2026

Rating: 5/5

Genuine import, fast delivery

Arrived well packaged. Verified the authenticity on the Arduino website. Ready to build my next automation project.

Anonymous

Feb 24, 2026

Rating: 5/5

Significant upgrade from R3

The 32-bit processor handles complex tasks much smoother. Backward compatible with most shields which is a huge plus.

Anonymous

Feb 14, 2026

Rating: 4/5

Great board, slight learning curve

Hardware is solid. Took me a bit to configure the WiFi credentials in the IDE but works well now. Worth the upgrade.

Anonymous

Jan 30, 2026

Rating: 3/5

Documentation could be clearer

Board works fine but I wished there were more beginner examples for the WiFi features specifically. Had to search forums.

5 FAQ

Q: Does it support MQTT protocols?

A: Yes, you can use standard WiFi libraries available in the IDE to implement MQTT communication easily.

Q: Is this compatible with the Arduino IDE 2.0?

A: Yes, fully supported on Arduino IDE 2.0 and later versions. You may need to update the board manager.

Q: What is the maximum current output on 5V pin?

A: The 5V pin can supply up to 500mA depending on the input power source used via the barrel jack or USB.

Q: Are the pin locations the same as UNO R3?

A: Yes, the form factor and pinout are compatible with most existing UNO R3 shields and layouts.

Q: Can I power this via USB-C?

A: Yes, the board features a USB-C connector for both power supply and programming purposes.

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