Other Arduino Codes and Videos by Robojax

STPB-5: Controlling 28BYJ-48 Stepper Motor with push buttons Send to Any Angles

STPB-5: Controlling 28BYJ-48 Stepper Motor with push buttons Send to Any Angles

This is the Arduino code to control the 28BYj-48 Stepper with push buttons to send it to any angle you set in code . for each push button you can set

  1. Angle
  2. Speed
  3. Direction

Resources for this sketch and video


 /*
 * This is Arduino code to control 28BYj-48 wiht ULN2003 board using
  as many push button as you want.
  For each push button you can have sepearate:
  -Speed
  -Direction
  -Angle
  
 Watch Video for instruciton.
 you can add as many push button as you want and assign different angle, speed and direciton

This is video: STPB-5
 * Written by Ahmad Shamshiri for Robojax Robojax.com
 * on Jun 09, 2020 at in Ajax, Ontario, Canada
 * 
 * 
 Watch the video instruction for this sketch: https://youtu.be/4LOpXFkWzD4
 
Related videos:
Introduction to using 28BYJ-48 stepper motor motor: https://youtu.be/Sl2mzXfTwCs
Contorl speed of this motor using Potentiometer: https://youtu.be/lrEW8xlSnuY
Control 28BYJ-48 Stepper motor with hand gesture: https://youtu.be/KfAnUgaSDmI
STPB-1 Control 28BYJ-48 Stepper motor with 3 push button for CW, CCW and STOP: https://youtu.be/q-H7GbyX5ho
STPB-2 Control 28BYJ-48 Stepper motor with 2 push button keep pressed: https://youtu.be/y-F-jjTOYyQ
STPB-3 ONE revolution CW CCW: https://youtu.be/MEEKvjj7vbY
STPB-4 Any (one) Angle push button: https://youtu.be/P_O-0_aOXuA
STPB-5 Any Angle (multiple) push buttons:  https://youtu.be/4LOpXFkWzD4
ESP8266 NodeMCU D1 Mini over WiFi: https://youtu.be/CzvGR0WTllI
ESP32 CW CCW Over WiFi : https://youtu.be/n2oeT6RcU5Q
 
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

If you found this tutorial helpful, please support me so I can continue creating 
content like this. You can support me on Patreon http://robojax.com/L/?id=63
or make donation using PayPal http://robojax.com/L/?id=64

* 
 * 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/>. 

*/


const int CW =1;
const int CCW =2;
const int STOP =3;

int Pin1 = 8;//IN1 is connected to 8 
int Pin2 = 9;//IN2 is connected to 9  
int Pin3 = 10;//IN3 is connected to 10 
int Pin4 = 11;//IN4 is connected to 11
int switchSTOP =2;//define input pin for STOP push button
int stopType=1;//1=normal stop, 2=hold stop (consumes power)

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

long angles[] = {360, 270, 7655};//angles of each push button
int pushButtons[] ={3, 4, 5};//digial pin for each push button
int directions[] ={CW, CCW, CW};//direction of eacch push button
int speedFactors[] = {1, 1, 3};//speed for each push button


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


int poleStep = 0; 
long stepVale =0;
const int SPR=64*64;
long goToAngle=0;
int activeButton=0;
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-5
  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); 
 attachInterrupt(digitalPinToInterrupt(switchSTOP), stopMotor, FALLING );
 // see this https://www.arduino.cc/reference/en/language/variables/utilities/sizeof/
 for (byte i = 0; i < (sizeof(pushButtons) / sizeof(pushButtons[0])); i++) {
   pinMode(i,INPUT_PULLUP);
  }


 
} //setup
 void loop() 
{ 
    stepVale = (SPR * goToAngle)/360 ;
  //Robojax.com Stepper Push button Any Angle STPB-5

  //see this https://www.arduino.cc/reference/en/language/variables/utilities/sizeof/
 for (byte i = 0; i < (sizeof(angles) / sizeof(angles[0])); i++) {
    if(digitalRead(pushButtons[i]) == LOW) 
    {
      goToAngle =angles[i];
      dirStatus =directions[i];
      count =0;
      activeButton =i;
    }// if ends
 }//for loop ends
  
  
 if(dirStatus ==CCW){ 
  
   poleStep++; 
   count++;   
   if(count+correction_CCW <= stepVale)
   {
    driveStepper(poleStep);      
   }else{
      stopMotor();  
   }
  //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{
      stopMotor();  
   }   
 }else{
  stopMotor();   
 }
 if(poleStep>7){ 
   poleStep=0;
 } 
 if(poleStep<0){ 
   poleStep=7; 
 } 
  delay(speedFactors[activeButton]);
  
  //Robojax.com Stepper Push button Any Angle STPB-5

}// 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-5
     digitalWrite(Pin1, pole1[c]);  
     digitalWrite(Pin2, pole2[c]); 
     digitalWrite(Pin3, pole3[c]); 
     digitalWrite(Pin4, pole4[c]);

}//driveStepper ends here

/*
 * @brief stops the motor immediately
 * @param none
 * @return does not return anything
 * 
 * www.Robojax.com code June 09, 2020 at 11:09 in Ajax, Ontario, Canada
 */
void stopMotor()
{
  //see this https://www.arduino.cc/reference/en/language/variables/utilities/sizeof/
 for (byte i = 0; i < (sizeof(angles) / sizeof(angles[0])); i++) {
    digitalWrite(pushButtons[i], HIGH); 

 }//for loop ends
 dirStatus = STOP;
 if( stopType ==2)
 {
  driveStepper(8);
 }
}//stopMotor()



   

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