An I/O expansion shield for the Arduino UNO R3 that breaks out every pin with its own VCC and GND, making it simple to connect multiple sensors and modules simultaneously. Stacks directly on top of the UNO with both female sockets and pin headers available for flexible wiring with male or female DuPont cables.

Comes with on-board components including a buzzer, infrared receiver, reset button, and power indicator — so you can start experimenting right away. Dedicated interfaces for OLED displays, I2C, and serial communication are also built in.

Key Features

• Full Pin Breakout – Every Arduino UNO I/O pin with independent VCC and GND
• Dual Interface Types – Female sockets and pin headers for male/female DuPont cables
• On-Board Buzzer – For audio output experiments
• Infrared Receiver – Built-in IR sensor for remote control projects
• Reset Button & Power LED – Convenient on-board controls
• Dedicated Interfaces – OLED display, I2C, and serial connectors
• 5 V & 3.3 V Power Pins – Ample power supply breakouts
• Dimensions – 68 × 53 × 23 mm
• Weight – 29.3 g

Ideal For

• Arduino beginners connecting multiple modules
• Rapid prototyping with sensors and displays
• Classroom Arduino projects
• Reducing breadboard wiring complexity

Package Contents

• 1× Yahboom UNO I/O Expansion Board

Resources

• Tutorial & Documentation