Page 29 - MDP2020-2
P. 29

················································································  명장양성프로젝트  【MDP】  과제발표회  자료집  Ⅱ    |  23



                digitalWrite(trigPin3,  HIGH);
                delayMicroseconds(10);
                digitalWrite(trigPin3,  LOW);
                duration3  =  pulseIn(echoPin3,  HIGH);
                distance3=  duration3*0.034/2;



                if  (distance3  >=  500  ||  distance3  <=  0){
                    Serial.println("Out  of  range");
                }
                else  {

                    Serial.print("Sensor3  :  ");
                    Serial.print(distance3);
                    Serial.println("cm");
                }
                delay(2000);



                digitalWrite(trigPin4,  LOW);
                delayMicroseconds(2);
                digitalWrite(trigPin4,  HIGH);
                delayMicroseconds(10);
                digitalWrite(trigPin4,  LOW);

                duration4  =  pulseIn(echoPin4,  HIGH);
                distance4=  duration4*0.034/2;


                if  (distance4  >=  500  ||  distance4  <=  0){

                    Serial.println("Out  of  range");
                }
                else  {
                    Serial.print("Sensor4  :  ");
                    Serial.print(distance4);
                    Serial.println("cm");

                    Serial.println("");
                }
                delay(2000);
            }
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