Introduction: DON'T STAY TOO CLOSE

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LED Arduino

Step 1: Circuit Board

The Materials needed for this project are:(1x) Arduino Uno(1x) Breadboard(1x) HC-SRO4 Ultrasonic Sensor(1x) Buzzer(2x) Green LEDs(2x) Yellow LEDs(2x) Red LEDs(7x) 330 ohm ResistorsA lot of jumper wires

Step 2: Computer Program

https://create.arduino.cc/editor/chenyuyuan3/f61af...