Micro:bit IO Expansion Board with Built-in Buzzer – 3.3V/5V Sensor Expansion Shield
The Micro:bit IO Expansion Board is an essential accessory for anyone working with the BBC Micro:bit. Designed to simplify hardware connections, this expansion board provides easy access to every GPIO pin while supporting both 3.3V and 5V sensor modules. Whether you’re building educational projects, robotics applications, IoT systems, or experimenting with electronics, this board makes development faster and more reliable.
Unlike connecting jumper wires directly to the Micro:bit, this expansion board provides clearly labeled 3-pin GVS (Ground, Voltage, Signal) interfaces, making it easy to connect sensors, relays, servos, LEDs, and other modules without complicated wiring.
The board includes a built-in buzzer connected to the P0 pin, which can be enabled or disabled using the onboard slide switch. It also features a 3.5mm audio jack, allowing external audio devices to be connected for sound output.
Powered through a USB 5V input, the board offers a 5V 1A power supply with a built-in self-resetting fuse for improved safety and protection against overcurrent conditions.
Its compact design, LEGO-compatible mounting holes, and clearly marked interfaces make it an excellent choice for students, makers, educators, and engineers.
Features
- Easy breakout of all Micro:bit GPIO pins
- Compatible with BBC Micro:bit
- Built-in buzzer with ON/OFF slide switch
- 3.5mm audio output connector
- Supports both 3.3V and 5V sensor modules
- USB powered (5V input)
- Maximum 5V 1A output current
- Built-in self-resetting fuse for overcurrent protection
- Clearly labeled 3-pin GVS interfaces
- Dedicated 3.3V and 5V power outputs
- LEGO-compatible mounting holes
- Compact and lightweight design
- Ideal for education, robotics, automation, and IoT projects
Applications
- STEM Education
- Robotics Projects
- DIY Electronics
- Sensor Interface
- Home Automation
- IoT Development
- Smart Device Prototyping
- Micro:bit Learning Kits
- Automation Projects
- Educational Laboratories
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