R3 Development Board ATmega328P CH340G


SKU: CJJSBGBG00312 Category:

Type; power module

Package; UNO R3

Batch number; expert version

Batch number; expert version
It is hereby declared that this version is optimized on the original version, mainly designed for foreign customers with high product quality and functional requirements, which guarantees complete compatibility with the original version and is convenient for everyone to use.


Completely solved the incompatibility of the traditional UNO board in win7 and win8 systems.
A pin header has been added to make it easier for everyone to use the DuPont line.
Replaced 16u2, reducing the cost to half, consumers get big benefits

Open the original design of the circuit diagram, the development software interface is free to download, you can also modify it according to your needs, the download procedure is simple and convenient. Simply use sensors, a variety of electronic components (such as: LED lights, buzzers, buttons, photoresistors, etc.) to make a variety of interesting works.

  Using a high-speed microprocessor controller (ATMEGA328), the development interface and environment are very simple and easy to understand, making it ideal for beginners to learn.

Performance description

Digital I/O digital input/output terminals are 0~13.

The analog I/O analog input/output terminals are 0~5.

Support ISP download function.

Input voltage: no external power supply is required when connecting to the computer USB, external power supply 5V~9V DC voltage input.

Output voltage: 5V DC voltage output and 3.3V DC voltage output.


Weight 0.05 kg
Dimensions 120 × 120 × 40 cm

Uno r3 wiring


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