This project is I make an example from Flynn_munroe.
It’s idea is from the author, not my own.
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Step 1: How to Do It
This is the picture that how you connect the circuit.
Step 2: My Own Example
here is my own example
This is the code that my work have.
I think when you are sleeping, the alarm will ring when someone comes in, then you may wake up and notice that someone comes in.