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Home / Development Boards & Control Boards / UNO R3 Development Board Improved Microcontroller Compatible with Arduino CH340

Attributes

Brand -
Category Electronic Components / Maker DIY / Development Boards & Control Boards
Origin -
Microcontroller ATmega328P
Operating Voltage 5V
Input Voltage (Recommended) 7-12V
Input Voltage (Limits) 6-20V
Digital I/O Pins 14
PWM Channels 6
Analog Input Pins 6
DC Current per I/O Pin 20 mA
Flash Memory 32 KB (ATmega328P)
USB Interface Chip CH340

5 reviews

A

Anonymous

Apr 17, 2026

Rating: 4/5

Good board, driver needed

The board itself is solid. Just make sure you download the CH340 drivers if you're on Windows. Once that was done, uploads were fast.

A

Anonymous

Apr 07, 2026

Rating: 5/5

Perfect for beginners

Works straight out of the box with the Arduino IDE. The CH340 driver was easy to install. Great value for learning electronics.

A

Anonymous

Mar 11, 2026

Rating: 4/5

Solid clone

Works well for most applications. Note that the USB port feels slightly less robust than the official board, but functionality is identical.

A

Anonymous

Feb 21, 2026

Rating: 5/5

Great price point

Bought this for a university project. It performs just like the original but costs less. Highly recommend for students.

A

Anonymous

Feb 20, 2026

Rating: 5/5

Reliable for projects

I've used this for several robotics projects. Pin layout is standard so all my shields fit perfectly. No issues so far.

5 FAQ

Q: Does it work with standard Uno shields?

A: Yes, the pin layout is standard UNO R3 form factor, so most shields designed for Uno will fit directly.

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

A: Yes, you can power it via the barrel jack or VIN pin with a 9V battery. The recommended input voltage is 7-12V.

Q: Is this compatible with the Arduino IDE?

A: Yes, this board is fully compatible with the Arduino IDE. You just need to select "Arduino Uno" as the board type.

Q: Are the logic levels 5V or 3.3V?

A: The I/O pins operate at 5V logic levels. Be careful when connecting 3.3V sensors without level shifting.

Q: Do I need to install specific drivers?

A: Yes, this version uses the CH340 chip. You may need to install the CH340 USB-to-Serial driver depending on your operating system.

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