Other Arduino Codes and Videos by Robojax

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

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
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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
    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("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   

 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;
 if(dirStatus ==CCW){ 
   if(count+correction_CCW <= stepVale)
  //full explannation at Arduino Course on Udemy.com see link above
 }else if(dirStatus ==CW){ 
   if(count+correction_CW <=stepVale)
  //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


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