// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2020-06-15 오후 3:54:08
// by Ok-Hyun Park
//
접근대상이 가까이오게 되면 진동모듈로 인해 진동이 울리고 
밤이 되면 조도센서로 인해 LED가 켜지는 방식
//
지금 상태는 접근대상이 오면 진동이랑 부저LED가 오게 만들었습다.
//
const int TRIG=9,ECHO=10;
const int LED=6,
SPEAKER=12,VIBE=8;
long duration;
int distance,dist1,note;
//
void setup(){
  pinMode(TRIG,OUTPUT); pinMode(ECHO,INPUT);
  pinMode(LED,OUTPUT);  pinMode(SPEAKER,OUTPUT);
  pinMode(VIBE,OUTPUT);
  Serial.begin(9600);
}
//
void loop(){
  digitalWrite(TRIG,1); delayMicroseconds(10); digitalWrite(TRIG,0);
  duration=pulseIn(ECHO,HIGH); distance=duration/58;
  Serial.print("Distance: "); Serial.print(distance); Serial.println("cm");  
  note=(100-distance+200)*10;
  if(distance>100){ noTone(SPEAKER); }
  else{
    if(dist1!=distance){ tone(SPEAKER,note); analogWrite(8,200); }
    else{ noTone(SPEAKER); analogWrite(8,0); }
    dist1=distance;
  }
  //-------------------------------------------------------------
  int val=analogRead(A0);
  if(val>500)analogWrite(LED,  0); 
  else       analogWrite(LED,255);
  //-------------------------------------------------------------
  delay(50);
}
 
  int val=analogRead(A0);
  if(val>500)analogWrite(LED,  0); 
  else       analogWrite(LED,255);
A0에는 조도센서를 연결하고
체크값인 500은 조도센서 회로 구성에 따라서 달라지므로 조도센서 예제를 참고해서 수정하세요