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 (this project)
Project 4: Controlling using push button STPB-2 keep pressing
Project 5: One Revolution using push button STPB-3
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 3 STPB-1 we control stepper motor using push buttons. We have 3 push buttons. one for clockwise (CW), the second for counterclockwise (CCW) and one for Stoping the motor.

Timing of chapters in the video

00:00 Start
02:03 Introduction to stepper motor
07:40 How motor is controlled
13:08 Wiring explained
15:43 Project 1 code
20:12 Project 1 demonstration
22:23 Project 2: Controlling motor via Serial Monitor
32:03 Project 2 Demonstration
43:13 Project 3: Controlling using push button STPB-1
35:48 Project 3: Wiring explained
37:45 Project 3: Code explained
39:59 Project 3: Demonstration
41:07 Project 4: Controlling using push button STPB-2 keep pressing
42:29 Project 4: Wiring
45:31 Project 4: Code
49:38 Project 4: Demonstration
51:20 Project 5: One Revolution using push button STPB-3
52:15 Project 5: Wiring
55:40 Project 5: Code
1:03:30 Project 5: Demonstration
1:05:48 Project 6: Push button Any Angle and speed STPB-4
1:07:43 Project 6: Wiring
1:11:04 Project 6: Code
1:17:34 Project 6: Demonstration
1:20:18 Project 7: Push multiple buttons to any angles STPB-5 angle, speed and direction
1:21:40 Project 7: Wiring
1:25:35 Project 7: Code
1:32:43 Project 7: Demonstration
1:39:24 Project 8: Controlling Stepper Motor using potentiometer
1:40:58 Project 8: Wiring
1:44:04 Project 8: Code
1:53:19 Project 8: Demonstration


 /*
* Lesson 107-3: Controlling stepper motor using 3 push buttons. 
We have 3 push buttons. one for clockwise (CW), the second for counterclockwise (CCW) and one for Stoping the motor. 

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 (this code)
  Project 4: Controlling using push button STPB-2  keep pressing
  Project 5: One Revolution using push button STPB-3
  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 switchStop=3;//define input pin for Stop push button
int switchCCW =4;//define input pin for CCW push button

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

void setup() 
{ 
 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);// CW push button pin as input
 pinMode(switchStop,INPUT_PULLUP);//Stop push button pin as input 
 pinMode(switchCCW,INPUT_PULLUP);//CCW push button pin as input

} 
 void loop() 
{ 
  
  if(digitalRead(switchCCW) == LOW) 
  {
    dirStatus =1;
  }else if(digitalRead(switchCW) == LOW)
  {
   dirStatus  = 2;  
  }else if(digitalRead(switchStop) == LOW)
  {
    dirStatus =3; 
  }
 if(dirStatus ==1){ 
   poleStep++; 
    driveStepper(poleStep);    
 }else if(dirStatus ==2){ 
   poleStep--; 
    driveStepper(poleStep);    
 }else{
  driveStepper(8);   
 }
 if(poleStep>7){ 
   poleStep=0; 
 } 
 if(poleStep<0){ 
   poleStep=7; 
 } 
 delay(1); 

}// loop

void driveStepper(int c)
{
     digitalWrite(Pin1, pole1[c]);  
     digitalWrite(Pin2, pole2[c]); 
     digitalWrite(Pin3, pole3[c]); 
     digitalWrite(Pin4, pole4[c]);   
}

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