// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2020-06-10 오후 2:30:12
// by Ok-Hyun Park
//
//조도센서와 7세그먼트를 이용해서 밝기 0~9단계를 출력
//
int a[]={2,3,4,5,6,7,8,9};
int as=8;
int d[10][8]={
  {0,0,0,0,0,0,1,1},
  {1,0,0,1,1,1,1,1},
  {0,0,1,0,0,1,0,1},
  {0,0,0,0,1,1,0,1},
  {1,0,0,1,1,0,0,1},
  {0,1,0,0,1,0,0,1},
  {0,1,0,0,0,0,0,1},
  {0,0,0,1,1,1,1,1},
  {0,0,0,0,0,0,0,1},
  {0,0,0,0,1,0,0,1}
};
//
void setup(){
  for(int i=0; i<as; i++){
    pinMode(a[i],OUTPUT);
    Serial.begin(9600);
  }
}
//
void loop(){
  Serial.println(analogRead(A0));
  delay(1);
  int val=analogRead(A0);
  int n=(int)((float)val*10.0/1024.0);
  //
  // 위에서 n은 0~9까지의 값이 들어갑니다.
  // n을 7세그먼트에 출력하도록 하세요
}
 
7세그먼트 출력 예제는 많이 있으니 웹검색해서 공부하세요