Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Development, Learning, Evaluation & Industrial Control Boards |
| Origin | - |
| Microcontroller | ATmega328P |
| Operating Voltage | 5V |
| Input Voltage (Recommended) | 7-12V |
| Digital I/O Pins | 14 (6 provide PWM output) |
| Analog Input Pins | 6 |
| DC Current per I/O Pin | 20 mA |
| Flash Memory | 32 KB (ATmega328P) of which 0.5 KB used by bootloader |
| SRAM | 2 KB (ATmega328P) |
| EEPROM | 1 KB (ATmega328P) |
| Clock Speed | 16 MHz |
Anonymous
Mar 27, 2026
Rating: 4/5
Classic choice
Still the go-to board for education. Wish it had built-in WiFi like the newer models, but for pure GPIO control, it's unbeatable.
Anonymous
Mar 13, 2026
Rating: 4/5
Great board, slightly pricey
Quality is undeniable, but it is more expensive than compatible boards. Worth it if you want to support the official ecosystem.
Anonymous
Mar 13, 2026
Rating: 5/5
Perfect for prototyping
The build quality is excellent. The USB connection is stable, and the pin headers are well-soldered. Highly recommended.
Anonymous
Mar 07, 2026
Rating: 5/5
The gold standard for beginners
This is the genuine article. It worked straight out of the box with the Arduino IDE. Perfect for my first robotics project.
Anonymous
Mar 07, 2026
Rating: 5/5
Reliable and robust
I've burned out a few clones, but this official board has been rock solid for months of heavy testing in my university lab.
Anonymous
Mar 04, 2026
Rating: 5/5
Easy to get started
As someone new to electronics, the vast community support for this specific model made learning incredibly easy.
Q: Does this board come with a USB cable included?
A: No, the USB A-to-B cable is typically sold separately. Please check the product bundle details before purchasing.
Q: Does it support 3.3V logic levels directly?
A: The ATmega328P operates at 5V logic. While it has a 3.3V pin for powering external sensors, the I/O pins are 5V tolerant but not 3.3V native. Use a level shifter for 3.3V-only devices.
Q: Can I power this board with a 9V battery?
A: Yes, you can connect a 9V battery to the barrel jack or the Vin and GND pins. The recommended input voltage range is 7-12V.
Q: What is the difference between this and the clone versions?
A: This is an official Arduino product with guaranteed quality control, proper drivers, and supports the development of the open-source platform. Clones may vary in component quality and driver stability.
Q: Is this compatible with the Arduino IDE version 2.0?
A: Yes, the Arduino UNO R3 is fully compatible with Arduino IDE 2.0 and all previous versions.
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