UNO R3 Development Board (Chinese Version) – ATmega328P with CH340G USB Chip, Includes 30cm USB Cable

Weight 0.027 kg
Dimensions 6.88 × 5.33 × 0.5 cm
Model Number

UNOs R3 DIP

Type

integrated circuit

Description

electronic module

Voltage - Breakdown

3.3V-5V

Operating Temperature

-40℃ ~ +85℃

Main control chip

ATMMega328P

Memory

32KB

SRAM

2KB

EERROM

1KB

The Arduino Uno R3 SMD (Made in China) is a cost-effective variant of the standard Uno R3, featuring an SMD ATmega328P microcontroller. It is widely used in electronics projects, automation, and robotics applications. This board offers the same functionality as the DIP version but with a surface-mounted microcontroller, making it more compact.

Key Features

Microcontroller: ATmega328P (SMD Package).
Operating Voltage: 5V.
Input Voltage (Recommended): 7-12V.
Digital I/O Pins: 14 (with 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.
USB Connectivity: Uses CH340 USB-to-serial converter (drivers required).

Differences from Standard Arduino Uno R3
1. Surface Mount ATmega328P: Unlike the DIP version, the microcontroller is soldered directly onto the board.
2. USB-to-Serial Converter: Uses the CH340 chip instead of the ATmega16U2, requiring driver installation for compatibility.
3. Compact Design: The SMD version allows for a slimmer, more cost-effective design.

 

Applications
1. Embedded systems and IoT projects.
2. Robotics and automation.
3. Home automation and sensor interfacing.
4. Educational prototyping and learning electronics.

Usage Instructions

1. Power Supply: Can be powered via USB or an external DC power source (7-12V recommended).
2. Driver Installation: If using the CH340 USB-to-serial chip, install the required drivers before programming.
3. Programming: Compatible with the Arduino IDE for easy code development.
4. Expansion: Works with all standard Arduino shields for extended functionality.

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