L298N not working properly

Other Hardware Motors, Mechanics, Power and CNC
1

I am using a arduno mega with l298n and a motor. the l298n is powered with 12V power source and arduino mega is connected to laptop usb. now when I switch on the power supply the motor rotates for a instance like 1 rotation and then stops. when i reset the arduino board it again rotates for a instance and stops. i i keep the reset button pressed the mottor rotates. this is the code i am using.

const int IN1 = 8;
const int IN2 = 9;

void setup() {
  // put your setup code here, to run once:
  pinMode(IN1, OUTPUT);
  pinMode(IN2, OUTPUT);
  digitalWrite(IN1, HIGH); // Set IN1 HIGH
  digitalWrite(IN2, LOW);  // Set IN2 LOW


}

void loop() {
  // put your main code here, to run repeatedly:

}
2

Show how your Arduino Mega, L298N, power supply are connected, with a clear picture and a drawing of the connections and pins. Get a close picture of the L298N, too.

2 Likes
3 

  pinMode(IN1, OUTPUT);
  pinMode(IN2, OUTPUT);
  digitalWrite(IN1, HIGH); // Set IN1 HIGH
  digitalWrite(IN2, LOW);  // Set IN2 LOW

  • Explain to us what happens in the above code ?

  • Always show us a good schematic of your proposed circuit.
    Show us good images of your ‘actual’ wiring. Give links to components.

4

@jainish8484
So what is your question?

5

Can you post an annotated schematic showing exactly how this is wired with links to the hardware devices technical information.

6

If all your connections are correct, your sketch should be turning RIGHT in a circle, with the left motor (IN1) driving forward (HIGH) and the right motor (IN2) not driven (LOW).

The surge-then-stop is probably a bad connection... is the JUMPER for the VSS/VS inserted?

7

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Here is the link to video of what happens when i switch on the power: https://youtu.be/H7_KWyZZxwg

8

Check that your programming codess have followed the following Truth Table:

ENA  IN1  IN2      Function
5V   5V   0V       Forward Rotation
5V   0V   5V       Reverse Rotation
5V   PWM  0V       Variable speed at Forward Rotation
9

What is the 12V supply's current rating?
What is the motor's voltage and current requirements?

10

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