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- #define trigPin 8
- #define echoPin 9
- #include <Servo.h>
- Servo myservo;
- void setup() {
- Serial.begin (9600);
- pinMode(trigPin, OUTPUT);
- pinMode(echoPin, INPUT);
- myservo.attach(5);
- }
- void loop() {
- int duration, distance,pos=0,i;
- digitalWrite(trigPin, LOW);
- delayMicroseconds(2);
- digitalWrite(trigPin, HIGH);
- delayMicroseconds(10);
- digitalWrite(trigPin, LOW);
- duration = pulseIn(echoPin, HIGH);
- distance = (duration/2) / 29.1;
- Serial.print(distance);
- Serial.println("cm");
- if(distance <= 3)
- {
- myservo.write(0);
- }
- delay(300);
- }
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