// MicroBoard program
// Turning a 5-leads unipolar stepper motor (common +ve) 
// The 4 coil leads are connected to outputs 1~4 of ULN2003, which are
// controlled by Pins, 8~11, and the common lead is connected +6V

#define DELAY    100	// speed delay parameter, smaller the number the faster the rotation


main()
{
   int   i;

   for(i=8; i <= 11; i++) pinlow(i); // turn all OFF
   loop for(i=8; i <= 11; i++) {     // repeatedly turn ON each coil in turn
     pinhigh(i);     // switch ON
     delay(DELAY);
     pinlow(i);      // switch OFF
   }
}