Little Bird
Yahboom Uno IO expansion board compatible with Arduino
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 s...
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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
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- Headers
- Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- OLED
- OLED stands for organic light-emitting diode, a display type where each pixel produces its own light. It matters because OLED screens are thin, high-contrast and easy to read for small status displays, but they can be more sensitive to image burn-in than some other display types.
- Shield
- An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.
- VCC
- VCC is the positive power-supply connection on a chip or module. Connecting it to the correct supply voltage is needed for the part to power on and helps avoid damaging the electronics.
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