Yahboom Basic:bit IO expansion board for micro:bit

Yahboom Basic:bit IO expansion board for micro:bit

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This is an IO expansion board designed for micro:bit, which supports IIC communication. Although the shape is small, the function is very rich, onboard 3.5mm audio interface, buzzer, programmable RGB lamp, a photoresistor, and many other electronic devices. Moreover, it has expanded the micro:bit all 20 pin headers and 5 alligator clip interfaces. Users can combine the alligator clip and DuPont line with other sensor modules to complete some interesting experiments. And this expansion board is designed with building block holes, which is convenient for users to expand the building block shape, such as elevator tower, building block car, game controller and so on. It is suitable for users who have already learned some about micro:bit and want to continue to learn more and like DIY.



  • Small size and reasonable layout of components.
  • A large number of electronic components onboard: 3.5mm audio interface, buzzer, programmable RGB lamp, photo-resistor, etc.
  • 20 pin headers and 5 alligator clip connectors for connecting alligator clips and DuPont lines.
  • Support IIC communication, and is compatible with sensor modules such as ultrasonic, colorful lights, infrared, rocker, etc.
  • Compatible with LEGObuilding block.


Package list

Basic:bit expansion board *1

Building bricks pack(Option)



Yahboom Basic:bit IO expansion board


Ask a Question
  • My dvr has broken, so I decided to recicle some pieces, one of them a12vdc vent. I would like to connect it to the basic bit board and write some code in phyton with the mu editor to read temp and send pwm value to move the vent. Can I connect it directly to the basic bit board pins (althouth i can not give more than 5 or 3 v to the vent). Second If I have a 12v batery like the ones it can hold the superbit board in order to reach the maximum rpm of the motor's vent, what circuit or plate I should place in between to ensure proper current to the vent but at the same time protect basic and microbit boards. Also please confirm if this also aplies to the red dc motors available from Yahboom.

    Hello, sir or mdadam,
    Could you tell us your E-mail, or send your problem to our Technical support email: support@yahboom.com
    our technical staff will reply you with more details via email.

Customer Reviews

Based on 4 reviews
Quentin Miller
Adaptador para BBC micro

Todo bien, perfecta para tener todos los pines de la BBc micro disponible en una forma muy accesible.

Thomas Wilson
Good board for BBC Microbit

Good board for BBC Microbit

Evan Garcia
Although small, it is very useful.

I purchased 20PCS for experimental courses on STEM classes. The quality is very good. The students have used it many times and the effect is still very good.
I plan to buy another 30PCS next week for use by local programming education institutions.

I believe that the product quality on Yahboom official website is guaranteed.


Rumen Sabev

Good products, fast delivery