Arduino Uno R3 SMD

Arduino Uno R3 SMD

Product Overview

The Arduino Uno R3 SMD from Pro Tronix is functionally identical to the classic Uno R3 but utilizes a Surface Mount Device (SMD) version of the ATmega328P microcontroller. While the standard Uno uses a removable DIP chip, the SMD version has the processor soldered directly to the board.

This design choice makes the board slightly more resistant to physical shocks and vibration, making it a favorite for robotics and automotive prototypes. It remains the most documented and widely used board in the world, compatible with thousands of existing shields, libraries, and tutorials. Whether you are a student starting your first “Blink” sketch or a professional building a quick prototype, the Uno R3 SMD provides the perfect balance of simplicity and capability.

Technical Specifications

Key Features

• Surface Mount Reliability: The soldered chip ensures a permanent, vibration-resistant connection, ideal for projects that move or shake.

• 100% Shield Compatible: Features the standard R3 pinout, including the SDA, SCL, and IOREF pins, ensuring it works with all modern Arduino shields.

• Advanced Connectivity: Includes a dedicated ICSP header for programming the microcontroller directly without the USB bootloader if needed.

• Protective Features: Includes a resettable polyfuse to protect your computer’s USB ports from shorts and overcurrent.

• Dual Power Logic: Automatically selects the best power source between the USB connection and the DC barrel jack.

SMD vs. DIP: What’s the Difference?

• Replaceability: The standard DIP version allows you to swap the chip if it gets damaged. The SMD version is permanent but offers a lower profile.

• Durability: The SMD chip cannot accidentally vibrate out of its socket, making it better for high-motion applications like RC cars or drones.

• Layout: Some SMD versions include additional solder pads for access to extra I/O or power rails, providing more flexibility for advanced users.

Common Applications

• Beginner Education: Learning the fundamentals of C++ programming and circuit design.

• Robotics: Controlling motors, servos, and ultrasonic sensors for autonomous navigation.

• Home Automation: Building light controllers, temperature monitors, and automated plant watering systems.

• Rapid Prototyping: Quickly testing ideas before moving to a custom PCB design.

You can see our available development boards and starter kits from here: Development Boards | Pro Tronix