What is it?

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.

How does it work?

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.

How can I build it?

If you want to build it, you would need:

1. Arduino
2. Some wires
3. Breadboards
4. LCD screen
5. Buzzer
6. RGB diode
7. HC-SR04 ultrasonic sensor

Circuit for this project (circuit created with Tinkercad):

Connections