/*
* This is Arduino code to control 28BYj-48 with ULN2003 board using
3 push buttons. STPB-1
* Written by Ahmad Shamshiri for Robojax Robojax.com
* on Feb 20, 2019 at 19:34 in Ajax, Ontario, Canada
Watch the video instruction for this sketch: https://youtu.be/q-H7GbyX5ho
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 from my Arduino Course at Udemy.com
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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
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
/*
* @brief sends signal to the motor
* @param "c" is integer representing the pol of motor
* @return does not return anything
*
* www.Robojax.com code June 2019
*/
void driveStepper(int c)
{
digitalWrite(Pin1, pole1[c]);
digitalWrite(Pin2, pole2[c]);
digitalWrite(Pin3, pole3[c]);
digitalWrite(Pin4, pole4[c]);
}//driveStepper end here
