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Do you have people constantly bugging you? If so try using this so you know when they're coming.

Step 1: Get Your Parts

1. Arduino uno
2. Some connecting wires
3. Breadboard
4. Piezo buzzer
5.LED
6.code (for arduino, go to make some.com for code.)

Step 2: Build

Connect the wires like in the picture shown.

Step 3: Test

I hope it works for you. Good luck!

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