Description
Reviews
| 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 |
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.
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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