#include <SoftwareSerial.h>
char disp[150];  //array buffer for storing text
SoftwareSerial ArduinoPov(10, 11); // RX, TX
int _[] = {0,0,0,0,0, 0,0,0,0,0, 0,0,0,0,0};
int A[] = {0,1,1,1,1, 1,0,1,0,0, 0,1,1,1,1};
int B[] = {1,1,1,1,1, 1,0,1,0,1, 0,1,0,1,0};
int C[] = {0,1,1,1,0, 1,0,0,0,1, 1,0,0,0,1};
int D[] = {1,1,1,1,1, 1,0,0,0,1, 0,1,1,1,0};
int E[] = {1,1,1,1,1, 1,0,1,0,1, 1,0,1,0,1};
int F[] = {1,1,1,1,1, 1,0,1,0,0, 1,0,1,0,0};
int G[] = {0,1,1,1,0, 1,0,1,0,1, 1,0,1,1,0};
int H[] = {1,1,1,1,1, 0,0,1,0,0, 1,1,1,1,1};
int I[] = {1,0,0,0,1, 1,1,1,1,1, 1,0,0,0,1};
int J[] = {1,0,0,0,0, 1,0,0,0,1, 1,1,1,1,1};
int K[] = {1,1,1,1,1, 0,0,1,0,0, 0,1,0,1,1};
int L[] = {1,1,1,1,1, 0,0,0,0,1, 0,0,0,0,1};
int M[] = {1,1,1,1,1, 0,1,1,0,0, 0,1,1,1,1};
int N[] = {0,1,1,1,1, 0,0,1,0,0, 0,0,1,1,1};
int O[] = {0,1,1,1,0, 1,0,0,0,1, 0,1,1,1,0};
int P[] = {1,1,1,1,1, 1,0,1,0,0, 0,1,0,0,0};
int Q[] = {0,1,1,1,1, 1,0,0,1,1, 0,1,1,1,1};
int R[] = {1,1,1,1,1, 1,0,1,0,0, 0,1,0,1,1};
int S[] = {0,1,0,0,1, 1,0,1,0,1, 1,0,0,1,0};
int T[] = {1,0,0,0,0, 1,1,1,1,1, 1,0,0,0,0};
int U[] = {1,1,1,1,1, 0,0,0,0,1, 1,1,1,1,1};
int V[] = {1,1,1,1,0, 0,0,0,0,1, 1,1,1,1,0};
int W[] = {1,1,1,1,0, 0,0,1,1,0, 1,1,1,1,0};
int X[] = {1,1,0,1,1, 0,0,1,0,0, 1,1,0,1,1};
int Y[] = {1,1,0,0,0, 0,1,1,1,1, 1,1,0,0,0};
int Z[] = {1,0,0,1,1, 1,0,1,0,1, 1,1,0,0,1};
int _0[] = {1,1,1,1,1, 1,0,0,0,1, 1,1,1,1,1};  //to display numbers use '_' because identifiers can only start with alphabet or '_'
int _1[] = {0,0,0,0,0, 0,0,0,0,0, 1,1,1,1,1};
int _2[] = {1,0,1,1,1, 1,0,1,0,1, 1,1,1,0,1};
int _3[] = {1,0,0,0,1, 1,0,1,0,1, 1,1,1,1,1};
int _4[] = {1,1,1,0,0, 0,0,1,0,0, 1,1,1,1,1};
int _5[] = {1,1,1,0,1, 1,0,1,0,1, 1,0,1,1,1};
int _6[] = {1,1,1,1,1, 1,0,1,0,1, 1,0,1,1,1};
int _7[] = {1,0,0,0,0, 1,0,0,0,0, 1,1,1,1,1};
int _8[] = {1,1,1,1,1, 1,0,1,0,1, 1,1,1,1,1};
int _9[] = {1,1,1,0,1, 1,0,1,0,1, 1,1,1,1,1};
int letterSpace;
int dotTime;
int p;
void setup() {
  
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, INPUT);
 
  ArduinoPov.begin(9600);
  Serial.begin(9600);
  letterSpace =850 ;   // space between letters
  
  dotTime = 650;  // space between dots
}
//declare reset function @ address 0
void(* resetFunc) (void) = 0;   // software reset function to reset arduino


void printLetter(int letter[])
{
  int y;
 
   for (y=2; y<7; y++)
  {
    digitalWrite(y, letter[y-2]);
  }
    delayMicroseconds(dotTime);
 
  
  for (y=2; y<7; y++)
  {
    digitalWrite(y, letter[y+3]);
  }
    delayMicroseconds(dotTime);
 
  
  for (y=2; y<7; y++)
  {
    digitalWrite(y, letter[y+8]);
  }
    delayMicroseconds(dotTime);
 
  
  for (y=2; y<7; y++)
  {
    digitalWrite(y, 0);
  }
  delayMicroseconds(letterSpace);
}

void loop()
{
  int p;
  int i=0;
  p=digitalRead(7);
if(p==0)
{ if (ArduinoPov.available() )
  {
    //-----------------------------------------------------------------------------------------------------------------------------------
    //                                                         DISPLAY
    //-----------------------------------------------------------------------------------------------------------------------------------
    for (i=0;i<150;i++)
    { 
      disp[i]=ArduinoPov.read();
    
      if (disp[i]=='a'|| disp[i]=='A')
    {
      printLetter(A);  
      Serial.println('A');    // to check on SERIAL monitor if the letters are recived properly before testing on FAN/MOTOR  
      
      }
      else if (disp[i]=='b'|| disp[i]=='B')
    {
      printLetter(B); 
          Serial.println('B');
      }
      else if (disp[i]=='c'|| disp[i]=='C')
    {
      printLetter(C); 
          Serial.println('C');
      }
      else if (disp[i]=='d'|| disp[i]=='D')
    {
      printLetter(D);   
      Serial.println('D');  
      }
      else if (disp[i]=='e'|| disp[i]=='E')
    {
      printLetter(E);  
         
      }
      else if (disp[i]=='f'|| disp[i]=='F')
    {
      printLetter(F);
           
      }
      else if (disp[i]=='g'|| disp[i]=='G')
    {
      printLetter(G);
           
      }
      else if (disp[i]=='h'|| disp[i]=='H')
    {
      printLetter(H);
           
      }
      else if (disp[i]=='i'|| disp[i]=='I')
    {
      printLetter(I);
           
      }
      else if (disp[i]=='f'|| disp[i]=='F')
    {
      printLetter(F);
           
      }
      else if (disp[i]=='g'|| disp[i]=='G')
    {
      printLetter(G);
           
      }
      else if (disp[i]=='h'|| disp[i]=='H')
    {
      printLetter(H);
           
      }
      else if (disp[i]=='i'|| disp[i]=='I')
    {
      printLetter(I);
           
      }
      else if (disp[i]=='j'|| disp[i]=='J')
    {
      printLetter(J);
           
      }
      else if (disp[i]=='k'|| disp[i]=='K')
    {
      printLetter(K);
           
      }
      else if (disp[i]=='l'|| disp[i]=='L')
    {
      printLetter(L);
           
      }
      else if (disp[i]=='m'|| disp[i]=='M')
    {
      printLetter(M);
           
      }
      else if (disp[i]=='n'|| disp[i]=='N')
    {
      printLetter(N);
           
      }
      else if (disp[i]=='o'|| disp[i]=='O')
    {
      printLetter(O);
           
      }
      else if (disp[i]=='p'|| disp[i]=='P')
    {
      printLetter(P);
           
      }
      else if (disp[i]=='q'|| disp[i]=='Q')
    {
      printLetter(Q);
           
      }
      else if (disp[i]=='r'|| disp[i]=='R')
    {
      printLetter(R);
           
      }
      else if (disp[i]=='s'|| disp[i]=='S')
    {
      printLetter(S);
    }     
    else if (disp[i]=='t'|| disp[i]=='T')
    {
      printLetter(T);
           
      }
      else if (disp[i]=='u'|| disp[i]=='U')
    {
      printLetter(U);
           
      }
      else if (disp[i]=='v'|| disp[i]=='V')
    {
      printLetter(V);
           
      }
      else if (disp[i]=='w'|| disp[i]=='W')
    {
      printLetter(W);
           
      }
      else if (disp[i]=='x'|| disp[i]=='X')
    {
      printLetter(X);
           
      }
      else if (disp[i]=='y'|| disp[i]=='Y')
    {
      printLetter(Y);
           
      }
      else if (disp[i]=='z'|| disp[i]=='Z')
    {
      printLetter(Z);
     }
     else if (disp[i]=='1')
    {
      printLetter(_1);
           
      }
     else if (disp[i]=='2')
    {
      printLetter(_2);
           
      }
     else if (disp[i]=='3')
    {
      printLetter(_3);
           
      }
    else if (disp[i]=='4')
    {
      printLetter(_4);
           
      }
     else if (disp[i]=='5')
    {
      printLetter(_5);
           
      }
     else if (disp[i]=='6')
    {
      printLetter(_6);
           
      }
    else if (disp[i]=='7')
    {
      printLetter(_7);
           
      }
    else if (disp[i]=='8')
    {
      printLetter(_8);
           
      }
     else if (disp[i]=='9')
    {
      printLetter(_9);
           
      }
     else if (disp[i]=='0')
    {
      printLetter(_0);
           
      }
      else if (disp[i]==' ')
    {
      printLetter(_);
    }
    //-----------------------------------------------------------------------------------------------------------------------------------
    //                                                        end of  DISPLAY
    //-----------------------------------------------------------------------------------------------------------------------------------
    
}
}   
}
}