Curriculum
Course: Ultrasonic Sensor Basics
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About the Project

About the Project

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Project Description

This project works like a car reverse parking sensor. An HC-SR04 ultrasonic sensor measures the distance to an obstacle behind the vehicle. As the vehicle gets closer:

  • More LEDs turn ON.
  • The buzzer beeps faster.
  • At a very short distance, the buzzer gives a continuous tone.

Components Required

Component Quantity
Arduino Nano/Uno 1
HC-SR04 Ultrasonic Sensor 1
LEDs (Green, Yellow, Orange, Red) 4
220Ω Resistors 4
Active Buzzer 1
Breadboard 1
Jumper Wires As required
USB Cable 1
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