• Instructables: EM-483 Specs

• https://github.com/worldthem/28bYJ48

#define ButonControl 4
#include <28BYJ48.h>
 
 
NonBlockingMotor motor(4, 7, 5, 6); 
 
int degreRotate = 900; 
int degreRotateBack = 330; 
 
 
long f1(long x){
   return x*motor.steps_per_rev/3600;
}
 
unsigned long currentTime = 0;
unsigned long newTime = 0; 
 
void on_reached(long steps){ } // to get number of steps use println
 
boolean dataBtn ;
 
void setup() {
  // put your setup code here, to run once:
  // initialise step motor 
  motor.init();
  motor.set_time_between_pulses(2000); // recommended
  motor.set_conversion_function(f1);
  motor.set_on_destination_reached(on_reached);
  pinMode(ButonControl, INPUT_PULLUP);// push button pin as input
 Serial.begin(9600);
}
 
void loop() {
 dataBtn = !digitalRead(ButonControl);
 
 if(millis() % 20000 == 0){
        motor.set_destination(degreRotate);
        motor.status = CW; // OR CCV to rotate back
  }
 
 
  if( dataBtn== 1) 
  {
       motor.status = STOP;
   }
 
 motor.update(); // commit rotation 
 
    if(millis() % 4000 == 0){   // this need because L293D Get realy hot so to prevent bourning the skheme :)  
           waitModeMotor();
      }
}
 
 
// motor get hot and for this we will need to make all the pins to LOW to avoid HOT
void waitModeMotor(){
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  digitalWrite(7, LOW);
  }