VU Meter Arduino

vu.ino

int diods[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12};
const int length = 11; 

#define FOR(x, n) for(int x=0; x<n; x++)

void setup() {
  FOR(x, length){
    pinMode(diods[x], OUTPUT);
    digitalWrite(diods[x], LOW); 
  }
}

int analogP = 5;

void loop() {
  static int last = 0;
  int input = analogRead(analogP); 
  input = abs(input - 512);
  int current = map(input, 50, 380, 0, 11); 
  last = current;
  int position;
  for(position = 0; position<last; position++) 
    digitalWrite(diods[position], HIGH);
  for(;position<rozmiar; position++)
    digitalWrite(diods[position], LOW);
   delay(5); 
}

vu.md

Tower

Visual Meter