Case 09: Automatic Doors
Purpose
To make an automatic door.
Link:
Materials Required
Video link: https://youtu.be/JimDF7ArSjQ
Bricks build-up
Installation Mthods of Hardwares
Install the sonar:bit with the bricks.
Hardware Connection
Connect a sonar:bit to P1 and the servo to S0 port on Wukong breakout board.
Software Platform
Coding
Add extensions
Click "Advanced" in the MakeCode to see more choices.
Search with Wukong in the dialogue box to download it.
Search with https://github.com/elecfreaks/pxt-sonarbit in the dialogue box to add the sonar:bit extension.
Program
Link:https://makecode.microbit.org/_8zWaUtHHD8Ec
Result
When the ultrasonic sensor detects someone passing by, it will display √ on the micro:bit and control the servo to open the door and close it automatically after 5 seconds, if the ultrasonic sensor does not detect anyone, it will keep displaying × on the micro:bit and the door is closed.
