 Code #define trigPin 6 | |
| #define echoPin 5 | |
| #define buzzer 2 | |
| float new_delay; | |
| void setup() | |
| { | |
| Serial.begin (9600); | |
| pinMode(trigPin, OUTPUT); | |
| pinMode(echoPin, INPUT); | |
| pinMode(buzzer,OUTPUT); | |
| } | |
| void loop() | |
| { | |
| long duration, distance; | |
| digitalWrite(trigPin, LOW); | |
| delayMicroseconds(2); | |
| digitalWrite(trigPin, HIGH); | |
| delayMicroseconds(10); | |
| digitalWrite(trigPin, LOW); | |
| duration = pulseIn(echoPin, HIGH); | |
| distance = (duration/2) / 29.1; | |
| new_delay= (distance *3) +30; | |
| Serial.print(distance); | |
| Serial.println(" cm"); | |
| if (distance < 50) | |
| { | |
| digitalWrite(buzzer,HIGH); | |
| delay(new_delay); | |
| digitalWrite(buzzer,LOW); | |
| } | |
| else | |
| { | |
| digitalWrite(buzzer,LOW); | |
| } | |
| delay(200); | |
| } |
