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 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 |
| Included Accessories | USB Cable and Pre-soldered Pin Headers |
Anonymous
Mar 27, 2026
Rating: 5/5
Great quality control
I've bought several generic boards before that had connectivity issues. This one is solid. The USB port feels sturdy, and the board layout is clear and easy to read for wiring projects.
Anonymous
Mar 16, 2026
Rating: 4/5
Good value, fast shipping
Works exactly as described. I deducted one star only because the documentation link on the box was a bit hard to find, but once I got it set up, uploading sketches was a breeze.
Anonymous
Mar 13, 2026
Rating: 5/5
Perfect for beginners and pros alike
This improved version of the R3 UNO is fantastic. The pre-soldered headers saved me a lot of time, and the included cable works perfectly with my laptop. It recognized the driver immediately on Windows 11.
Anonymous
Mar 08, 2026
Rating: 5/5
Solid upgrade
The pin spacing is precise, making it easy to plug into breadboards. The LED indicators are bright enough to see status clearly without being distracting. Highly recommended.
Anonymous
Mar 05, 2026
Rating: 5/5
Reliable for classroom use
Bought ten of these for my robotics club. Every single board worked out of the box. The improved voltage regulator handles our motor shields much better than the older versions we had.
Anonymous
Mar 05, 2026
Rating: 4/5
Does the job well
No complaints about performance. It runs my sensor arrays smoothly. The cable provided is a standard length, which is fine for most desk setups.
Q: What is the maximum current draw per I/O pin?
A: Each I/O pin can safely provide or receive a maximum of 20mA. The total current drawn from all pins combined should not exceed 200mA to avoid damaging the microcontroller.
Q: Are the pin headers already soldered onto the board?
A: Yes, this improved version comes with the male pin headers pre-soldered, so the board is ready to use straight out of the box without any assembly required.
Q: Is this board compatible with the official Arduino IDE?
A: Yes, this R3 UNO board is fully compatible with the Arduino IDE. You can select 'Arduino Uno' from the board manager and upload your code directly.
Q: Can I use 3.3V sensors with this board?
A: The board operates at 5V logic levels. While you can power 3.3V sensors using the 3.3V pin, you may need a logic level converter for data lines to ensure safe communication between the sensor and the microcontroller.
Q: Does the package include a power supply adapter?
A: No, the package includes the development board, a USB cable for data and power, and pin headers. A separate wall power adapter is not included but can be connected via the barrel jack if needed.
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