Hi, In this article you will learn, how you can control two DC motors with Arduino using L298N motor driver module
L298N motor driver module.
L298N H-bridge motor driver module is use to control two DC motor or a single bipolor stepper motor. By using this module you can control direction and speed of DC motors. This module support 5 to 35 volt DC.
In this module also have onboard 5v regulator. so if you are using 6 to 12v power supply then you have also have 5 volt output from the board.
Control DC motors with Arduino
When you want to drive DC motor with Arduino, you needs some sort of motor driver module which can run motors and control the direction and speed of the motors. L298N driver module is compact and best for this. In this post I have attached step by step demonstration video tutorial to control speed and diraction of DC motors with motor driver module, manually as well as with Arduino.
Video tutorial for controlling DC motors with driver module.
Arduino code for L298N motor driver module.
// connect motor controller pins to Arduino digital pins
// motor one
int enA = 10;
int in1 = 9;
int in2 = 8;
// motor two
int enB = 5;
int in3 = 7;
int in4 = 6;
void setup()
{
// set all the motor control pins to outputs
pinMode(enA, OUTPUT);
pinMode(enB, OUTPUT);
pinMode(in1, OUTPUT);
pinMode(in2, OUTPUT);
pinMode(in3, OUTPUT);
pinMode(in4, OUTPUT);
}
void demoOne()
{
// this function will run the motors in both directions at a fixed speed
// turn on motor A
digitalWrite(in1, HIGH);
digitalWrite(in2, LOW);
// set speed to 200 out of possible range 0~255
analogWrite(enA, 200);
// turn on motor B
digitalWrite(in3, HIGH);
digitalWrite(in4, LOW);
// set speed to 200 out of possible range 0~255
analogWrite(enB, 200);
delay(2000);
// now change motor directions
digitalWrite(in1, LOW);
digitalWrite(in2, HIGH);
digitalWrite(in3, LOW);
digitalWrite(in4, HIGH);
delay(2000);
// now turn off motors
digitalWrite(in1, LOW);
digitalWrite(in2, LOW);
digitalWrite(in3, LOW);
digitalWrite(in4, LOW);
}
void demoTwo()
{
// this function will run the motors across the range of possible speeds
// note that maximum speed is determined by the motor itself and the operating voltage
// the PWM values sent by analogWrite() are fractions of the maximum speed possible
// by your hardware
// turn on motors
digitalWrite(in1, LOW);
digitalWrite(in2, HIGH);
digitalWrite(in3, LOW);
digitalWrite(in4, HIGH);
// accelerate from zero to maximum speed
for (int i = 0; i < 256; i++) {
analogWrite(enA, i);
analogWrite(enB, i);
delay(20);
}
// decelerate from maximum speed to zero
for (int i = 255; i > 0; --i)
{
analogWrite(enA, i);
analogWrite(enB, i);
delay(20);
}
// now turn off motors
digitalWrite(in1, LOW);
digitalWrite(in2, LOW);
digitalWrite(in3, LOW);
digitalWrite(in4, LOW);
}
void loop()
{
demoOne();
delay(1000);
demoTwo();
delay(1000);
}
Arduino: 1.8.5 (Windows Store 1.8.10.0) (Windows 10), Board: “Arduino/Genuino Uno”
C:\Users\User\Desktop\SKETCHES\DualHBridgeDCMotor_Sketch\DualHBridgeDCMotor_Sketch.ino: In function ‘void demoTwo()’:
DualHBridgeDCMotor_Sketch:61: error: ‘i’ was not declared in this scope
analogWrite(enA, i);
^
exit status 1
‘i’ was not declared in this scope
This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.
Hi, Thanks for informing me. I have update the code, Please copy and past the code again it will work now. And Please let me know if you are still facing any problem.
yep its showing errors in code
how can i correct it..//
remove the spaces behind the scope or in other words remove the indentations. to verify the keywords should be colored, check that
I want to run 24v dc motor having 10kg torque, 30 rpm with the help of aurdino uno
The motor must run only in one direction continuously
Plz suggests me what to use and how to do programing
how to contro??
by joystic???
My DC motor spins one direction only when connected thru the L298. I have adapted the code above. I dont think the problem is with the code or the motor as I tested the motor by connecting + and – to 12V directly and changed polarities and it spins both directions. But when I connect thru the L298 then only 1 direction works.
How can I debug the L298. At this time I have only 1 DC geared 100 rpm motor. Have not connected another motor.
The Power is thru a 12V DC wall adapter. The controls to the L298 are thru the Arduino Pins 6 and 7. Pin 9 is set to analogWrite of PWM 255. ( of course the jumper on EN-A Enable A is removed and controlled thru the Arduino.
I also have the same problem if you get the solution please let me know
How can I do the same thing with Arduino & L293D motor shield ?
I also have the same problem if you get the solution please let me know
hi
I am not getting any error but the motor is not running please help
that’s some awesome code, nice variations. Loved it !!!