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.
