Arduino Parking Sensor works just like a parking sensor in the car - it beeps faster and changes the color depending on the distance between an object and ultrasonic sensor.
Ultrasonic sensor's (HC-SR04) Trigger pin sends a signal which bounces off an object, which next gets received by Echo pin as a time, counted from time of sending to receiving signal.
If you want to build it, you would need:
- Arduino
- Some wires
- Breadboards
- LCD screen
- Buzzer
- RGB diode
- HC-SR04 ultrasonic sensor
Circuit for this project (circuit created with Tinkercad):
Connections