Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | Renesas RA4M1 (ARM Cortex-M4) |
| Operating Voltage | 5V |
| Input Voltage (Recommended) | 7-12V |
| Digital I/O Pins | 14 (6 PWM outputs) |
| Analog Input Pins | 6 |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| Clock Speed | 48 MHz |
| Connectivity | Wi-Fi 4 (802.11b/g/n) and Bluetooth Low Energy |
| USB Interface | USB Type-C |
Anonymous
Mar 28, 2026
Rating: 5/5
Reliable and fast
I've been using this for home automation controls. The 48MHz clock speed makes a noticeable difference in response time compared to the older 16MHz boards.
Anonymous
Mar 23, 2026
Rating: 5/5
Huge upgrade from the classic UNO
The R4 Minima is a fantastic evolution of the classic board. The increased processing power and memory make handling complex sensors much smoother. The USB-C port is also a welcome modern addition.
Anonymous
Mar 22, 2026
Rating: 4/5
Solid board, good value
Works exactly as described. The pin layout is identical to the original UNO, so all my existing shields fit perfectly. Only wish it came with a longer USB cable.
Anonymous
Mar 15, 2026
Rating: 5/5
Built-in WiFi is a game changer
Finally, an Arduino with native WiFi that doesn't require a bulky shield. Connection is stable, and the power consumption is reasonable for battery-powered projects.
Anonymous
Mar 04, 2026
Rating: 4/5
Great for learning, slight learning curve
Perfect for my university robotics project. It runs all my old sketches but allows for more advanced code. Took a little time to set up the Wi-Fi libraries, but the documentation helped.
Anonymous
Mar 03, 2026
Rating: 5/5
Professional grade performance
Using this in a prototype for a client. The stability and extra RAM allow for more robust error handling and data logging without crashing.
Q: What IDE version is required to program this board?
A: You need Arduino IDE version 2.0 or later. You will also need to install the 'Arduino Renesas Boards' package via the Boards Manager.
Q: Can I power this board via the USB-C port?
A: Absolutely. You can power the board and communicate with it using a standard USB-C cable connected to your computer or a USB power adapter.
Q: Does this version include Bluetooth functionality?
A: Yes, the ABX00087 model includes both Wi-Fi 4 and Bluetooth Low Energy (BLE) capabilities built directly into the microcontroller.
Q: Is this board compatible with existing Arduino UNO shields?
A: Yes, the Arduino UNO R4 Minima maintains the same form factor and pinout as previous UNO boards, ensuring full compatibility with most standard shields.
Q: Is the 5V pin an output or input on this model?
A: On the UNO R4, the 5V pin acts as an output when powered via USB or the barrel jack. It is not recommended to use it as a voltage input.
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