Aperture�in�Dimigo1학기�아두이노�교육

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오늘�배울�내용은!

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새로운�함수

pulseIn(echo, HIGH);

계산하기

float duration = pulseIn(echo, HIGH) / 29 / 2;

소스코드�작성하기int echo = 4; int trig = 5; int ledPin = 7;

void setup() { Serial.begin(9600); pinMode(trig, OUTPUT); // pinMode(echo, INPUT); // pinMode(ledPin, OUTPUT); }

void loop() { // digitalWrite(trig, LOW); digitalWrite(echo, LOW); delay(5); digitalWrite(trig, HIGH); // delay(10); digitalWrite(trig, LOW); //

unsigned long duration = pulseIn(echo, HIGH); // // float distance = duration / 29.0 / 2.0;

Serial.print(distance); Serial.println("cm");

if(distance <= 10){ digitalWrite(ledPin, HIGH); }else{ digitalWrite(ledPin, LOW); } delay(200); }

소스코드�작성하기

오늘의�내용�정리

pulseIn(echo, HIGH); :

trig : 송신부, echo : 수신부