/* Control display bord actionat cu motor pas
cu pa model X15-580, US PAT 437182*/

int led=13; // pt.test
int c1 = 2;
int c2=3;   // bobina c
int b1 = A4;
int b2= A3; // bobina b
int i,j,t;
void setup() 
{                
  // initialize the digital pin as an output.
  
pinMode(c1, OUTPUT);
pinMode(c2, OUTPUT);
pinMode(b1, OUTPUT);
pinMode(b2, OUTPUT);
pinMode(led, OUTPUT);
digitalWrite(c1, HIGH); digitalWrite(c2, HIGH); //stari initiale 
digitalWrite(b1, HIGH); digitalWrite(b2, HIGH); 

t=10;
for (j=1;j<3;j++)
     {
for(i=1;i<120;i++)
{

  digitalWrite(c1, HIGH);   //
  digitalWrite(c2, LOW);    //  curent i1
  delay(t);   
  digitalWrite(c2, HIGH);   // 
  
  digitalWrite(b1, HIGH);   //
  digitalWrite(b2, LOW);    //  curent i3
  delay(t);   
   digitalWrite(b2, HIGH);
  
  
  digitalWrite(c1, LOW);    // curent i2
  delay(t);   
  digitalWrite(c1, HIGH);   // 

   
   digitalWrite(b1, LOW);    // curent i4
   delay(t);   
   digitalWrite(b1, HIGH);   // 
   }
   delay(500);
   for(i=1;i<120;i++)    // mers invers
         {
   
   digitalWrite(b1, LOW);    // curent i4
   delay(t);   
   digitalWrite(b1, HIGH);   // 
   
   
  digitalWrite(c1, LOW);    // curent i2
  delay(t);   
  digitalWrite(c1, HIGH);   // 

    digitalWrite(b1, HIGH);   //
  digitalWrite(b2, LOW);    //  curent i3
  delay(t);   
   digitalWrite(b2, HIGH);
  
   digitalWrite(c1, HIGH);   //
  digitalWrite(c2, LOW);    //  curent i1
  delay(t);   
  digitalWrite(c2, HIGH);   // 
         }
       }  
}

void loop() {
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(500);               // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(500);               // wait for a second
}