About the Project
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 |