Controlling 28BYJ-48 Stepper Motor Send to Any Angle STPB-4

This is the Arduino code to control the 28BYj-48 Stepper with 3 push buttons to send it to any angle you set in code . The speed of motor can be set in code. Watch video for details.
Resources for this sketch and video


 /*
 * This is Arduino code to control 28BYj-48 wiht ULN2003 board using
 2 push buttons to move the motor to any angle in CW or CCW and control the speed.
 Watch Video for instruciton.

This is video: STPBP-2
 * Written by Ahmad Shamshiri for Robojax Robojax.com
 * on April 23, 2020 at in Ajax, Ontario, Canada
 * 
 * 
 Watch the video instruction for this sketch: https://youtu.be/P_O-0_aOXuA

 More videos and codes
 STPB-1 Control Stepper 28BYJ-48 Push buttons using Arduino code CCW, CW STOP STPB-1
 STPB-2 Controlling Position of 28BYJ-48 Stepper Motor with 2 Push buttons STPB-2
 STPB-3 Controlling ONE Revolution of 28BYJ-48 Stepper Motor with 2 Push buttons STPB-3
 STPB-4 Send 28BYJ-48 Stepper Moor to any Angle  with 3 Push buttons STPB-4 CW, CCW and STOP
 
You can get the wiring diagram and full explanition of code from my Arduino Course at Udemy.com
Learn Arduino step by step with all library, codes, wiring diagram all in one place
visit my course now http://robojax.com/L/?id=62

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* 
 * Code is available at http://robojax.com/learn/arduino

 * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.* 
 * This code has been download from Robojax.com
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>. 

*/



int Pin1 = 10;//IN1 is connected to 10 
int Pin2 = 11;//IN2 is connected to 11  
int Pin3 = 12;//IN3 is connected to 12  
int Pin4 = 13;//IN4 is connected to 13 
int switchSTOP =2;//define input pin for STOP push button
int switchCW   =3;//define input pin for CW push button
int switchCCW  =4;//define input pin for CCW push button

int speedFactor =1;//1=fastest, 2=slower or 3 more slower
long goToAngle = 360;


int correction_CW = 150;//watch video for details
int correction_CCW = 150;//watch video for details

const int CW =1;
const int CCW =2;
const int STOP =3;
int poleStep = 0; 
long stepVale =0;
const int SPR=64*64;

int pole1[] ={0,0,0,0, 0,1,1,1, 0};//pole1, 8 step values
int pole2[] ={0,0,0,1, 1,1,0,0, 0};//pole2, 8 step values
int pole3[] ={0,1,1,1, 0,0,0,0, 0};//pole3, 8 step values
int pole4[] ={1,1,0,0, 0,0,0,1, 0};//pole4, 8 step values





int count=0;
int  dirStatus = STOP;// stores direction status 3= stop (do not change)

void setup() 
{ 
  //Robojax.com Stepper Push button Any Angle STPB-4
  Serial.begin(9600);
  Serial.begin("Robojax Video for Stepper Motor STPB-2");  
 pinMode(Pin1, OUTPUT);//define pin for ULN2003 in1 
 pinMode(Pin2, OUTPUT);//define pin for ULN2003 in2   
 pinMode(Pin3, OUTPUT);//define pin for ULN2003 in3   
 pinMode(Pin4, OUTPUT);//define pin for ULN2003 in4   

 pinMode(switchSTOP,INPUT_PULLUP); 
 pinMode(switchCW,INPUT_PULLUP);
 pinMode(switchCCW,INPUT_PULLUP); 
 
} 
 void loop() 
{ 
    stepVale = (SPR * goToAngle)/360 ;
  //Robojax.com Stepper Push button Any Angle STPB-4
  if(digitalRead(switchCCW) == LOW) 
  {
    dirStatus =CCW;
    count =0;
  }else if(digitalRead(switchCW) == LOW)
  {
   dirStatus  = CW;  
    count =0;   
  }
  if(digitalRead(switchSTOP) == LOW)
  {
    dirStatus  = STOP;
    delay(200);
  }
 if(dirStatus ==CCW){ 
   poleStep++; 
   count++;   
   if(count+correction_CCW <= stepVale)
   {
    driveStepper(poleStep);      
   }else{
      driveStepper(8);  
   }
  //full explannation at Arduino Course on Udemy.com see link above
 }else if(dirStatus ==CW){ 
   poleStep--; 
   count++;   
   if(count+correction_CW <=stepVale)
   {
    driveStepper(poleStep);      
   }else{
      driveStepper(8);  
   }   
 }else{
  driveStepper(8);   
 }
 if(poleStep>7){ 
   poleStep=0;
 } 
 if(poleStep<0){ 
   poleStep=7; 
 } 
 delay(speedFactor); 
  //Robojax.com Stepper Push button Any Angle STPB-4

}// loop


/*
 * @brief moves motor to specific angle 
 * @param "angle" is integer representing the angle
 * @return does not return anything
 * 
 * www.Robojax.com code Ap1il 19 2020 at 01:22 in Ajax, Ontario, Canada
 */
void driveStepper(int c)
{
    //Robojax.com Stepper Push button Any Angle STPB-4
     digitalWrite(Pin1, pole1[c]);  
     digitalWrite(Pin2, pole2[c]); 
     digitalWrite(Pin3, pole3[c]); 
     digitalWrite(Pin4, pole4[c]);
     if(c ==8)
     {
      digitalWrite(switchCW, HIGH); 
      digitalWrite(switchCCW, HIGH);               
     }
}//driveStepper ends here