Lesson 107: Control Stepper motor 28BYJ-48 with ULN2003 for Arduino, 7 Projects

Lesson 107: Control Stepper motor 28BYJ-48 with ULN2003 for Arduino, 7 Projects

Please select other codes for this lecture from the links below.

Part 10: Stepper Motors

In this lesson we learn how to use mini stepper motor 28BYJ-48 for our project. I am presenting with 8 projects so you can use it in almost any applicaiton. In the video, I have explained the code, shown full wiring diagram and how connect the wires, push buttons and bread board.

Projects

• Project 1: Running motor
• Project 2: Controlling stepper motor from Serial Monitor
• Project 3: Controlling stepper motor using push button STPB-1
• Project 4: Controlling using push button STPB-2 keep pressing
• Project 5: One Revolution using push button STPB-3 (this project)
• Project 6: Push button Any Angle and speed STPB-4
• Project 7: ush multiple buttons to any angles STPB-5 angle, speed and direction
• Project 8: Controlling stepper motor using potentiometer

In Project 5 STPB-3 we control stepper motor using two push buttons. One push button for CW and other for CCW to move the motor for ONE revolution with speed set in code.

Timing of chapters in the video

 /*
* Lesson 107-5: Controlling stepper motor using 2 push buttons STPB-2. 
STPB-2 we control stepper motor using two push buttons. One push button to rotate motor into clockwise CW direction and the other to coutnerclockwise CCW direction. Keys must be keept pressed. 

In this lesson we learn how to use mini stepper motor 28BYJ-48 for our project. I am presenting with 8 projects
  so you can use it in almost any applicaiton. In the video, I have explained the code, shown full wiring diagram and 
  how connect the wires, push buttons and bread board. 

  Project 2: we will push different keys on keyboard and control motor
 
 
  Project 1: Running motor 
  Project 2: Controlling stepper motor from Serial Monitor
  Project 3: Controlling stepper motor using push button STPB-1 
  Project 4: Controlling using push button STPB-2  keep pressing 
  Project 5: One Revolution using push button STPB-3(this code)
  Project 6: Push button Any Angle and speed STPB-4
  Project 7: Using multiple buttons to any angles STPB-5 angle, speed and direction
  Project 8: Controlling stepper motor using potentiometer

  * Watch Video instrution for this code:https://youtu.be/TQ7R2bY-MWU
  * 
  * This code is part of Arduino Step by Step Course which starts here:  https://youtu.be/-6qSrDUA5a8
  * 
  * for library of this code visit http://robojax.com/
  * 
 If you found this tutorial helpful, please support me so I can continue creating 
 content like this. Make a donation using PayPal by credit card https://bit.ly/donate-robojax 
 
 * Written by Ahmad Shamshiri for Robojax Robojax.com
 * on Feb 20, 2019 at 19:34 in Ajax, Ontario, Canada
 
  *  * 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 switchCW  =2;//define input pin for CW push button
int switchCCW =3;//define input pin for CCW push button
int speedFactor =1;//1=fastest, 2=slower or 3 more slower



int correction_CW = 150;
int correction_CCW = 150;

const int CW =1;
const int CCW =2;
const int STOP =3;
int poleStep = 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 One Revolution STPB-3
  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(switchCW,INPUT_PULLUP);
 pinMode(switchCCW,INPUT_PULLUP);  
 
} 
 void loop() 
{ 
  //Robojax.com Stepper Push button One Revolution STPB-3
  if(digitalRead(switchCCW) == LOW) 
  {
    dirStatus =CCW;
    count =0;
  }else if(digitalRead(switchCW) == LOW)
  {
   dirStatus  = CW;  
    count =0;   
  }
  if(digitalRead(switchCW) == LOW && digitalRead(switchCCW) == LOW)
  {
    dirStatus  = STOP;
    delay(200);
  }
 if(dirStatus ==CW){ 
   poleStep++; 
   count++;   
   if(count+correction_CCW <= SPR)
   {
    driveStepper(poleStep);      
   }else{
      driveStepper(8);  
   }
  
 }else if(dirStatus ==CCW){ 
   poleStep--; 
   count++;   
   if(count+correction_CW <=SPR)
   {
    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 One Revolution STPB-3

}// 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)
{
     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