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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.
In Project 2 we control direction of rotation of stepper motor using keyboard on our computer via serial monitor.
/*
* Lesson 107-2: Controlling stepper motor from Serial Monitor
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(this code)
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
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
* * 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 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 commandLeft =106;// 106 is ASCII value for lowercase L (l) rotate CW
int commandStop =107;// 107 is ASCII value for lowercase K (k) stops
int commandRight =108;// 108 is ASCII value for lowercase J (j) rotate CCW
int poleStep = 0;
int dirStatus = 3;// stores direction status 3= stop (do not change)
int directionCommand = commandStop;
void setup()
{
pinMode(Pin1, OUTPUT);
pinMode(Pin2, OUTPUT);
pinMode(Pin3, OUTPUT);
pinMode(Pin4, OUTPUT);
Serial.begin(9600);
Serial.println("Robojax 28BYJ-48 Stepper");
}
void loop()
{
directionCommand =getCommand();
if(directionCommand ==commandRight)
{
dirStatus =1;
}else if(directionCommand ==commandLeft)
{
dirStatus = 2;
}else if(directionCommand ==commandStop)
{
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]);
}
/*
*
* @brief Turns gets command from Serial monitor to control
* direction of stepper motor
* @param none
* @return integer value of ASCII character
*/
int getCommand()
{
int command =0;
if (Serial.available() > 0) {
command =Serial.read() ;
}
//Serial.println(command);
if(command >= commandLeft && command <= commandRight){
return command;
}else{
return 1000;//nothing was received
}
}//getCommand() end
/*
* Demonstration of Serial command
* * Watch Video instrution for this code:https://youtu.be/msB3zpxy7Uk
* Written by Ahmad Shamshiri for Robojax (Robojax.com)
*/
int commandLeft =106;// 106 is ASCII value for lowercase L (l) rotate CW
int commandStop =107;// 107 is ASCII value for lowercase K (k) stops
int commandRight =108;// 108 is ASCII value for lowercase J (j) rotate CCW
void setup()
{
Serial.begin(9600);
}
void loop()
{
int command;
if (Serial.available() > 0) {
command =Serial.read() ;
}
if(command >=commandLeft && command<=commandRight){
Serial.println(command);
}
delay(500);
}// loop
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