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Home / Development, Learning, Evaluation & Industrial Control Boards / UNO R3 Development Board Microcontroller Improved Version Compatible with Arduino CH340

Attributes

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
DC Current per I/O Pin 20 mA
Flash Memory 32 KB (0.5 KB used by bootloader)
SRAM 2 KB
EEPROM 1 KB
Clock Speed 16 MHz
USB Interface Chip CH340

6 reviews

A

Anonymous

Mar 20, 2026

Rating: 5/5

Reliable clone for student projects

Bought five of these for a university robotics club. All of them performed consistently. The pinout matches the standard R3 layout perfectly.

A

Anonymous

Mar 12, 2026

Rating: 5/5

Perfect for beginners and prototyping

This board works flawlessly with the Arduino IDE. The CH340 driver was easy to install on Windows 10. Great value for the price compared to official boards.

A

Anonymous

Mar 12, 2026

Rating: 4/5

Great performance, USB cable not included

The board functions great, just be aware you need a USB A to B printer cable which isn't included in the package. Otherwise, no complaints.

A

Anonymous

Mar 06, 2026

Rating: 5/5

Exactly what I needed to start learning

As someone new to microcontrollers, this board made getting started very easy. Plenty of tutorials online work directly with this hardware.

A

Anonymous

Mar 02, 2026

Rating: 4/5

Good quality, minor driver hiccup

The board itself is solid and all pins tested working. Had a small issue finding the right driver initially, but once installed, it uploaded sketches without errors.

A

Anonymous

Mar 01, 2026

Rating: 5/5

Stable and fast shipping

Used this for a home automation sensor node. It has been running stable for three weeks now. Highly recommend for IoT prototypes.

5 FAQ

Q: Does it support 3.3V logic levels?

A: The board operates at 5V logic levels. While it has a 3.3V output pin, the I/O pins are not 5V tolerant if connected to 3.3V systems without level shifting.

Q: Does this board come with a USB cable?

A: No, the package includes only the UNO R3 board. You will need a standard USB Type-A to Type-B cable separately.

Q: Is this compatible with Mac OS?

A: Yes, it is compatible with Mac OS. You may need to install the CH340 drivers, which are available for download from our support page or the manufacturer's site.

Q: Can I power this board with a 9V battery?

A: Yes, you can power the board via the barrel jack connector using a 7-12V DC power supply, such as a 9V battery adapter.

Q: What is the difference between this and the official Arduino?

A: The main difference is the USB-to-Serial chip. This board uses the CH340 instead of the ATmega16U2 found on official boards. Functionally, they operate identically for most projects.

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