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Lesson 36 Wireless Controlled Alarm Door

  • Enhance the security of your door with the micro:bit. This tutorial was written by Sean Lew from the Singapore University of Technology and Design during his summer internship in 2018.

Objectives​

    1. Build your own wireless alarm door!
    1. Set up an alarm for any intruders or unlocked doors!

Materials​

  • 2 x Micro:bit
  • 1 x Breakout Board
  • 1 x Collision Sensor
  • 1 x Buzzer

Step 1 - Setup!​

  • Insert one micro:bit into the breakout board.
  • Connect the buzzer to pin 0 of the breakout board, and connect the collision sensor to pin 1.
  • Make sure to download the "tinkercademy-tinker-kit" extension before proceeding to Step 2.

Step 2 - Signal Transmitter​

  • Drag these code blocks into the MakeCode platform, then download them to the micro:bit connected to the breakout board.
  • Press the collision sensor a few times to check if your code is working properly!

Step 3 - Signal Receiver​

  • Download this set of code for the second micro:bit (receiver).
  • Now test the collision sensor to see if the receiving micro:bit is working properly!
  • Now that you have set up your first wireless door security device, you can try it with more than one door!
  • Feel free to add other forms of alarms to the receiving micro:bit to enhance your own security.

  • Complete!