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

Attributes

Brand -
Category Electronic Components / Maker DIY / Development Boards & Control Boards
Origin -
Microcontroller ATmega328P
USB Interface Chip CH340
Operating Voltage 5V
Recommended Input Voltage 7-12V
Digital I/O Pins 14
PWM Pins 6
Analog Input Pins 6
Flash Memory 32 KB
SRAM 2 KB
Clock Speed 16 MHz

5 reviews

A

Anonymous

Apr 07, 2026

Rating: 5/5

Works perfectly

Uploaded sketches without any issues. Great value for money compared to original boards.

A

Anonymous

Apr 04, 2026

Rating: 4/5

Good but needs drivers

Remember to install CH340 drivers first. Board works great after that initial setup.

A

Anonymous

Feb 16, 2026

Rating: 5/5

Solid quality

Pins are well soldered and USB port is sturdy. No connection issues so far.

A

Anonymous

Feb 11, 2026

Rating: 5/5

Great for learning

Using this for my university project. Very reliable and easy to program.

A

Anonymous

Feb 07, 2026

Rating: 5/5

Beginner friendly

Easy to set up and start coding immediately. Highly recommend for starters.

5 FAQ

Q: Do I need to install drivers?

A: Yes, please download and install the CH340 driver for your specific operating system.

Q: Does it come with a USB cable?

A: No, a standard USB A to B cable is required and sold separately.

Q: What is the max current per pin?

A: The recommended maximum current per I/O pin is 20mA to ensure safety.

Q: Is this compatible with Arduino IDE?

A: Yes, fully compatible. Please select Arduino Uno in the board manager settings.

Q: Can I power sensors with 3.3V?

A: Yes, there is a dedicated 3.3V output pin available on the board for sensors.

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