Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | ATmega328P |
| Operating Voltage | 5V |
| Digital I/O Pins | 14 (6 PWM outputs) |
| Analog Input Pins | 6 |
| Flash Memory | 32 KB (0.5 KB used by bootloader) |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Clock Speed | 16 MHz |
| USB Interface | USB Type-B |
| Power Input | 7-12V (Recommended), 6-20V (Limits) |
Anonymous
Mar 25, 2026
Rating: 4/5
Solid board, minor USB cable issue
The board itself functions flawlessly for all my sensor tests. I deducted one star because the included USB cable felt a bit flimsy, but the board performance is top-notch.
Anonymous
Mar 16, 2026
Rating: 5/5
Easy to set up
I was worried about setting up the environment, but the community support is huge. Uploaded my first blink sketch in under 10 minutes. Very satisfied.
Anonymous
Mar 14, 2026
Rating: 5/5
Reliable workhorse for prototyping
I have bought five of these for my university lab. They handle complex C++ sketches without crashing and are very durable. Highly recommended for educational use.
Anonymous
Mar 13, 2026
Rating: 5/5
Great value starter kit component
If you are learning embedded systems, this is the gold standard. Plenty of online tutorials work perfectly with this R3 version. No driver issues on Windows 11.
Anonymous
Mar 05, 2026
Rating: 5/5
Perfect for beginners and pros alike
This board is exactly what I needed to start my home automation project. The pin layout is standard, and it worked immediately with the Arduino IDE. Great build quality.
Anonymous
Mar 01, 2026
Rating: 4/5
Good for motor control projects
Used this to control a small rover. The PWM pins work great for speed control. Wish it had more analog inputs, but that's a limitation of the chip, not the board.
Q: What is the maximum current per I/O pin?
A: Each I/O pin can provide or receive a maximum of 40mA. The total DC current for all ports should not exceed 200mA to avoid damaging the microcontroller.
Q: Can I power this board with a 9V battery?
A: Absolutely. You can connect a 9V battery to the barrel jack or the Vin and GND pins. The onboard regulator handles voltages between 7V and 12V optimally.
Q: Does this come with a USB cable?
A: Yes, the package includes a standard USB Type-A to Type-B cable for programming and power supply.
Q: Is this board compatible with the Arduino IDE?
A: Yes, this UNO R3 board is fully compatible with the official Arduino IDE and supports standard Arduino libraries.
Q: Is this suitable for controlling WS2812 LED strips?
A: Yes, many users successfully control WS2812 strips using digital pins. Just ensure you have an external power source for the LEDs if the strip is long.
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