Connect L298N to arduino

Other Hardware General Electronics
1

Hello, I would like to know how I am supposed to connect L298N to arduino according to schematic;
http://robotoid.com/appnotes/circuits-bridges.html?

I connected OUTPUT pin 2 and 3 to motor, V+ for motor pin 4 to power supply (+) 5V and (-) to ground, INPUT1 pin 5 to arduino's output pin 6, ENABLE pin 6 to arduino pin 5V, INPUT2 pin 7 to arduino's output pin 7, GROUND pin8 to ground (-), V+ for L298N I connected to arduino 5V pin. In the end I have 5V on OUTPUT pin 2 and 3 and the motor is not running. Is something missing?

2

Your software.

3

KeithRB:
Your software.

:wink:

4

what are you using for a sense resistor ?

these tell the chip what power to output to allow you to limit power and protect your motor.

5

dave-in-nj:
what are you using for a sense resistor ?

these tell the chip what power to output to allow you to limit power and protect your motor.

I didn't use any resistor, I just used the 1st (basic) and 4th diagrams.

Your software.

I am using Arduino software.

My code

int pinM1=6;
int pinM2=7;
int Byteout=0;
int space=32;
float val=0;

void setup(){
Serial.begin(9600); 
pinMode(pinM1,LOW);
pinMode(pinM2,LOW);
}

void loop(){
  if(Serial.available()>=0){
    char Byteout=Serial.read();
    Serial.write(space);
  
  
  if(Byteout=='f'){
      Serial.print("forward");
      val=analogRead(A0)*5.00/1023;
      Serial.write(space);
      Serial.print(val,3);
      Serial.write(space);
      digitalWrite(pinM1, HIGH);
      digitalWrite(pinM2, LOW);
      char Byteout=Serial.read();
}

  if(Byteout=='b'){
      Serial.print("backward");
      Serial.write(space);
      digitalWrite(pinM1, LOW);
      digitalWrite(pinM2, HIGH);
      char Byteout=Serial.read();

}
 if(Byteout=='s'){
      Serial.print("stop");
      Serial.write(space);
      digitalWrite(pinM1, HIGH);
      digitalWrite(pinM2, HIGH);
      char Byteout=Serial.read();
}
}
delay(100);
}