29. Case 27: The Smart Garbage Can#

29.1. Purpose#

Make a smart garbage can.

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29.3. Materials Required#

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29.4. Bricks build-up#

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29.5. Installation Mthods of Hardwares#

Install the sonar:bit with the bricks.

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29.6. Hardware Connection#

Connect a servo to S0 and a sonar:bit to P0 port on Wukong breakout board.

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29.7. Software Platform#

MakeCode

29.8. Coding#

Add extensions#

Click “Advanced” in the MakeCode to see more choices.

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Search with Wukong in the dialogue box to download it.

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Search with IOT:bit in the dialogue box to download it.

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Program#

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Link:https://makecode.microbit.org/_XeMXzj7z3JFx

Result#

When the micro:bit is powering on, it displays a heart icon, then the lid will automatically open when the ultrasonic sensor detects someone approaching, and it will automatically close after three seconds.