Using L298N To control 2 DC Motors with Potentiometer and 3 Push buttons
Using L298N To contorl DC Motors with Potentiometer and 3 Push buttons
This this video shows how to use L298N Module to control 2 DC Motor fully with Robojax Library. We are using 3 push buttons to STOPClockwise CW, or Counter Clockwise CCW.Please watch video for instruction. Download library.
In this page you will codes to control 1 motor and 2 motors using L298N Motor Controller module
L298N Motor Controller module
Single motor control with Push buttons and Potentiometer
Signal IN1, IN2 and ENA wiring
3 push buttons wiring
Resources for this sketch
- Robojax L298N DC Motor Library
- Datasheet for L298N H-Bridge Motor driver (pdf)
- Datasheet for 7805 Voltage regulator (pdf)
- Robojax Arduino Course on Udemy
- Get Early Access to my videos via Patreon
Code to control 1 DC motor using L298N Module with push button and pot
/*
* Library Example for L298N Module to control DC 1 motor with 3 push buttons (see the link for controlling 2 motors)
*
* This code is to control DC motors using two potentiometer (variable resistors)
*
* Written by Ahmad Shamshiri on October 11, 2019
* in Ajax, Ontario, Canada. www.robojax.com
*
*
* Watch video instruction for this code:https://youtu.be/qo7eJ6PUx2M
*
* Get this code and other Arduino codes from Robojax.com
Learn Arduino step by step in structured course with all material, wiring diagram and library
all in once place. Purchase My course on Udemy.com 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
* * 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/>.
*/
#include <Robojax_L298N_DC_motor.h>
// motor 1 settings
#define IN1 2
#define IN2 4
#define ENA 3 // this pin must be PWM enabled pin
const int CCW = 2; // do not change
const int CW = 1; // do not change
#define motor1 1 // do not change
#define motor2 2 // do not change
//*** Potentiometer and push button for motor 1 started
const int motor1PushButtonCW = 8;
const int motor1PushButtonStop = 9;
const int motor1PushButtonCCW = 10;
const int pot1Input = A0;
const int motor1Minimum =15;//30% is minimum for motor 1
// do not change below this line
int motor1Direction =CCW;//
int motor1StopState=HIGH;//Stope state of motor 1
int motor1Speed =0;// speed of motor 1
//*** Potentiometer and push button for motor 1 ended
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// use the line below for single motor
Robojax_L298N_DC_motor motor(IN1, IN2, ENA, true);
// use the line below for two motors
//Robojax_L298N_DC_motor motor(IN1, IN2, ENA, IN2, IN3, ENB, true);
void setup() {
Serial.begin(115200);
motor.begin();
//L298N DC Motor by Robojax.com
pinMode(motor1PushButtonCW, INPUT_PULLUP);
pinMode(motor1PushButtonStop, INPUT_PULLUP);
pinMode(motor1PushButtonCCW, INPUT_PULLUP);
}
void loop() {
updateState1();//read all push buttons
int pot1Value= analogRead(pot1Input);// read potentiometer value
motor1Speed = map(pot1Value, 0,1023, motor1Minimum, 100);// convert 0-5V to 0-100%
if(motor1StopState ==HIGH)
{
motor.brake(1);
}else{
motor.rotate(motor1, motor1Speed, motor1Direction);
}
//motor.demo(1);
//motor.rotate(motor1, motor1Speed, CW);//run motor1 at 60% speed in CW direction
delay(100);
}//
/*
* updateState1()
* @brief reads push buttons and updates values
* @param none
* @return no return
* Written by Ahmad Shamshiri for robojax.com
* on Oct 11, 2019 in Ajax, Ontario, Canada
*/
void updateState1()
{
if(digitalRead(motor1PushButtonCW) ==LOW && motor1StopState !=LOW){
motor1Direction =CW;// CW button is pressed
motor1StopState =LOW;
}
if(digitalRead(motor1PushButtonCCW) ==LOW && motor1StopState !=LOW)
{
motor1Direction =CCW;
motor1StopState =LOW;
}
if(digitalRead(motor1PushButtonStop) ==LOW)
{
motor1StopState =HIGH;// STOP button is pressed
}
}//updateState end
Code to control 2 DC motors using L298N Module with push button and pot
/*
* Library Example for L298N Module to control DC 2 motors with 3 push buttons
*
* This code is to control DC motors using two potentiometer (variable resistors)
*
* Written by Ahmad Shamshiri on October 11, 2019
* in Ajax, Ontario, Canada. www.robojax.com
*
*
* Watch video instruction for this code:https://youtu.be/qo7eJ6PUx2M
*
* Get this code and other Arduino codes from Robojax.com
Learn Arduino step by step in structured course with all material, wiring diagram and library
all in once place. Purchase My course on Udemy.com 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
* * 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/>.
*/
#include <Robojax_L298N_DC_motor.h>
// motor 1 settings
#define IN1 2
#define IN2 4
#define ENA 3 // this pin must be PWM enabled pin
// motor 2 settings
#define IN3 6
#define IN4 7
#define ENB 5 // this pin must be PWM enabled pin
const int CCW = 2; // do not change
const int CW = 1; // do not change
#define motor1 1 // do not change
#define motor2 2 // do not change
//*** Potentiometer and push button for motor 1 started
const int motor1PushButtonCW = 8;
const int motor1PushButtonStop = 9;
const int motor1PushButtonCCW = 10;
const int pot1Input = A0;
const int motor1Minimum =15;//30% is minimum for motor 1
// do not change below this line
int motor1Direction =CCW;//
int motor1StopState=HIGH;//Stope state of motor 1
int motor1Speed =0;// speed of motor 1
//*** Potentiometer and push button for motor 1 ended
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//*** Potentiometer and push button for motor 2 started
const int motor2PushButtonCW = 11;
const int motor2PushButtonStop = 12;
const int motor2PushButtonCCW = 13;
const int pot2Input = A1;
const int motor2Minimum =15;//30% is minimum for motor 2
// do not change below this line
int motor2Direction =CCW;//
int motor2StopState=HIGH;//Stope state of motor 2
int motor2Speed =0;// speed of motor 2
//*** Potentiometer and push button for motor 2 ended
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
// use the line below for single motor
//Robojax_L298N_DC_motor motor(IN1, IN2, ENA, true);
// use the line below for two motors
Robojax_L298N_DC_motor motor(IN1, IN2, ENA, IN3, IN4, ENB, true);
void setup() {
Serial.begin(115200);
motor.begin();
//L298N DC Motor by Robojax.com
//push buttons for motor 1
pinMode(motor1PushButtonCW, INPUT_PULLUP);
pinMode(motor1PushButtonStop, INPUT_PULLUP);
pinMode(motor1PushButtonCCW, INPUT_PULLUP);
//push buttons for motor 2
pinMode(motor2PushButtonCW, INPUT_PULLUP);
pinMode(motor2PushButtonStop, INPUT_PULLUP);
pinMode(motor2PushButtonCCW, INPUT_PULLUP);
}
void loop() {
updateState1();//read all push buttons for motor1
int pot1Value= analogRead(pot1Input);// read potentiometer value
motor1Speed = map(pot1Value, 0,1023, motor1Minimum, 100);// convert 0-5V to 0-100%
if(motor1StopState ==HIGH)
{
motor.brake(1);
}else{
motor.rotate(motor1, motor1Speed, motor1Direction);
}
// codes to control motor 2
updateState2();//read all push buttons for motor2
int pot2Value= analogRead(pot2Input);// read potentiometer value for motor 2
motor2Speed = map(pot2Value, 0,1023, motor2Minimum, 100);// convert 0-5V to 0-100%
if(motor2StopState ==HIGH)
{
motor.brake(2);
}else{
motor.rotate(motor2, motor2Speed, motor2Direction);
}
delay(100);
}//
/*
* updateState1()
* @brief reads push buttons and updates values
* @param none
* @return no return
* Written by Ahmad Shamshiri for robojax.com
* on Oct 11, 2019 in Ajax, Ontario, Canada
*/
void updateState1()
{
if(digitalRead(motor1PushButtonCW) ==LOW && motor1StopState !=LOW){
motor1Direction =CW;// CW button is pressed
motor1StopState =LOW;
}
if(digitalRead(motor1PushButtonCCW) ==LOW && motor1StopState !=LOW)
{
motor1Direction =CCW;
motor1StopState =LOW;
}
if(digitalRead(motor1PushButtonStop) ==LOW)
{
motor1StopState =HIGH;// STOP button is pressed
}
}//updateState1 end
/*
* updateState2()
* @brief reads push buttons and updates values
* @param none
* @return no return
* Written by Ahmad Shamshiri for robojax.com
* on Oct 11, 2019 in Ajax, Ontario, Canada
*/
void updateState2()
{
if(digitalRead(motor2PushButtonCW) ==LOW && motor2StopState !=LOW){
motor2Direction =CW;// CW button is pressed
motor2StopState =LOW;
}
if(digitalRead(motor2PushButtonCCW) ==LOW && motor2StopState !=LOW)
{
motor2Direction =CCW;
motor2StopState =LOW;
}
if(digitalRead(motor2PushButtonStop) ==LOW)
{
motor2StopState =HIGH;// STOP button is pressed
}
}//updateState2 end