• Get to know the Crash Sensor, OLED and Buzzer
  • Make something with a OLED
  • Make something with a Crash Sensor

1 x BBC micro:bit

1 x Micro USB cable

1 x Breakout board

1 x Crash Sensor

1 x OLED

1 x Buzzer

2 x Female-Female jumper wires

  • In this project, we are going to create an intruder detector which the buzzer will sound when someone opens the door.
  • A message will always be displaying on the OLED, showing the status of the house

  • Note: You can use any jumper wire colour

    • Connect 2 Female-Female jumper wires to the Buzzer.
    • The longer pin on the Buzzer will connect to the yellow pin on the breakout board, while the shorter one connects to the black pin.
    • Plug the other end of the jumper wires to Pin 0

  • Next, plug in the OLED as shown in the picture
  • You are able to plug it into any of the three rows
  • For the next components, make sure the colour of the wire follows the coloured pins on the break out board
  • Plug in the crash sensor to Pin 1
  • Click on Advanced in the Code Drawer to see more code sections
  • We’ll add a package of code to be able to use our kit components
  • Look at the bottom of the Code Drawer for Add Package and click it

Note: If you get a warning telling you some packages will be removed because of incompatibility issues, either follow the prompts or create a new project in the  Projects file menu.

  • Click on Tinkercademy inside the Code Drawer to find our custom blocks for the various components in your kit


  • After that, use blocks under the Tinkercademy section to initialize the OLED and Crash Sensor as shown in the picture


  • Since there are only two conditions, we need only one ‘else-if’ statement
  • When the Crash Sensor is not pressed, the buzzer will sound and a message “Intruder Detected” will be displayed on OLED. Else if there is no force is applied to the Crash Sensor, the buzzer will silence and a message “The house is safe” will be displayed on OLED.


  • Finally! You have created a intruder detector