Cables & Connectors

Electronics Components

Motors & Controllers

On Sale items!

Get Professional Support

BBC Micro:bit


On sale items!


Check out our latest news to find out more about events, opportunities and partnerships.

Esmes' Electronics

Esmes' Electronics is a simple introduction to using the micro:bit written by a year 5 student.

Troys' tutorials

Learn with Troy by asking for support and, he will post a tutorial here to benefit all of our visitors. Free advice!

Feature teacher

Be inspired by some of our favorite teachers using our products.

Get professional support

Contact us now to request your own tutorial or learning resource.

This section doesn’t currently include any content. Add content to this section using the sidebar.

Image caption appears here

Add your deal, information or promotional text


Micro:Circular LED Expansion Board

1 item left

You can easily turn this board into a clock, a timer, a Lucky Turntable Game, and more! When used with the BBC micro:bit, this circular expansion board becomes a creators dream.
Make this into an egg timer by using the onboard buzzer, and turn it into a colourful spectrometer using the onboard microphone. There are two external ports, P0 and P1, so you can get more ways to play by connecting more sensors!



  • Supports USB interface, power bank or USB computer power supply.
  • Supports PH2.0 interface power supply and the battery box or lithium battery power supply.
  • 24 RGB single-line LEDs - that's 16 million colour combinations!
  • MakeCode programming
  • Onboard microphone and buzzer
  • P0 and P1 interfaces support expansion modules.
  • Ultra-thin volume, more suitable for wearable and strap applications.


  • Supply Voltage:3.5~5V
  • WS2812 Single-line RGB LEDs x 24
  • Onboard buzzer x 1
  • Onboard microphone x 1
  • Number of interfaces: IO expansion board(P0,P1)x2, PH2.0 Power Interface x1, USB power Interface x1


  • Product wiki
  • Open-source design files


  • Micro:Circular RGB LED Expansion Board x1
  • PH2.0-3pin sensor cable ×2
  • M3x4 screw ×5
  • Search