Circuit Diagram Car Parking System
Arduino Code
//define Pins #include <Servo.h> Servo servo; int trigPin = 11; int echoPin = 12; // defines variables long duration; int distance; void setup() { servo.attach(13); servo.write(180); delay(2000); // Sets the trigPin as an Output pinMode(trigPin, OUTPUT); // Sets the echoPin as an Input pinMode(echoPin, INPUT); } void loop() { // Clears the trigPin digitalWrite(trigPin, LOW); delayMicroseconds(2); // Sets the trigPin on HIGH state for 10 micro seconds digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); // Reads the echoPin, returns the sound wave travel time in microseconds duration = pulseIn(echoPin, HIGH); // Calculating the distance distance= duration*0.034/2; // Prints the distance on the Serial Monitor Serial.print("Distance: "); Serial.println(distance); if ( distance <= 25 ) // Change Distance according to Ultrasonic Sensor Placement { servo.write(180); delay(3000); } else { servo.write(90); } }
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