UNO R3 ATMEGA328P CH340 Development Board + Proto Shield Kit

UNO R3 Development Board with ATMEGA328P, CH340 & Proto Shield Expansion

Take your electronics projects to the next level with this optimized UNO R3 Development Board, powered by the ATMEGA328P microcontroller and featuring the CH340 USB-to-serial chip for broad OS compatibility. Bundled with a Proto Shield Expansion Board and USB cable, this kit is the perfect starting point for beginners and a reliable workhorse for experienced makers.

Made in China.

Why Choose This UNO R3 Kit?

• Wide OS Compatibility: Completely resolves driver issues on Windows 7 (including 64-bit), Windows 8, and Windows 10 systems — simple, hassle-free driver installation every time.
• CH340 USB Chip: Replaces the traditional 16U2 chip, cutting costs while maintaining full functionality and delivering stable, reliable USB communication.
• Expanded Pin Headers: Additional pin sockets make it effortless to connect Dupont jumper wires for fast, secure prototyping.
• ISP Download Support: Supports in-system programming (ISP) for advanced firmware flashing directly to the microcontroller.
• Proto Shield Included: The bundled R3 Proto Shield Expansion Board adds a convenient breadboard-style prototyping area directly on top of your UNO board.
• USB Cable Included: Everything you need to get started is in one package — just plug in and start coding.

Technical Specifications

What's in the Box?

• 1 × UNO R3 Development Board (ATMEGA328P + CH340)
• 1 × R3 Proto Shield Expansion Board
• 1 × USB Cable

Ideal For

This kit is perfectly suited for students, hobbyists, educators, and DIY electronics enthusiasts. Connect LEDs, buzzers, buttons, photoresistors, sensors, and countless other components to bring your ideas to life. The beginner-friendly Arduino IDE environment means you can go from unboxing to uploading your first sketch in minutes.

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Frequently Asked Questions

Q: Is this UNO R3 board fully compatible with the Arduino IDE?

A: Yes, this ATMEGA328P-based UNO R3 development board is fully compatible with the Arduino IDE. Simply install the CH340 driver, select the correct COM port, and you're ready to upload sketches just like you would with an official Arduino UNO.

Q: Why does this board use the CH340 chip instead of the 16U2?

A: The CH340 USB-to-serial chip provides the same USB communication functionality as the 16U2 but at a lower cost, making this board more affordable without sacrificing performance. The CH340 driver is widely available and installs easily on Windows 7, 8, and 10 — including 64-bit versions.

Q: What can I build with this UNO R3 + Proto Shield kit?

A: The possibilities are nearly endless! You can create LED light displays, sensor-based projects, buzzers and alarm systems, button-controlled circuits, motor drivers, temperature monitors, and much more. The included Proto Shield Expansion Board gives you extra space to build and test your circuits directly on the board.

Q: Do I need an external power supply to use this development board?

A: No external power supply is required for basic use — simply connect the board to your computer via the included USB cable. If you need to run the board independently, you can supply 5V to 9V DC via an external power source.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.