Laser Cut

It’s very important to ventilate the product for a while, or the room (especially the dorm room) will smell like it’s burnt.

Time Spent

Approximately 10 hours

Circuit Design

The diagram below is the equavalent circuit inside of the box:



  • The connection is not very stable. Sometimes the buzzer went off even if the box is closed

  • Battery consumption is very huge.


The buzzer inside of the box will go off when the box is opened.