Arduino DC Motor Driving Develop Board Expansion Board L298P Driving Module H Bridege for Smart Car

Arduino DC Motor Driving Develop Board Expansion Board L298P Driving Module H Bridege for Smart Car

Description:
- L298P shield DC motor driver adopts L298P, can directly drive two DC motor, driving motor reaches 2A, motor output terminal adopts 8 high speed diode for protection

Parameters:
- Motor driviing voltage: external intput: 3-35V, internal input: 6-12V
- Logic terminal current: <30mA
- Driving current: 2A
- Drving peak current: 4A
- Max power: 25W
- Working temp: -25---130degree
- Can directly plug in ArduinoUNO、leonardo、mega2560 board, with no current detection, the programme has four pins:
 - PWMA: D4（~）pin
- DIRA: D5 pin
- PWMB: D6（~）pin
- DIRB: D7 pin

Arduino reference code:
int E1 = 4;  //PWMA

int M1 = 5;  //DIRA

int E2 = 6;  //PWMB             

int M2 = 7;  //DIRB

int Val = 0;

int ChangeValue = 20;   //the speed value ,changevalue from 0-255

void setup()

{

      pinMode(M1, OUTPUT); 

      pinMode(M2, OUTPUT);

}

void foward()

{

      digitalWrite(M1,LOW);         

      analogWrite(E1, Val);   //the speed value of motorA is 20
 
      digitalWrite(M2,LOW)；

      analogWrite(E2, Val);   //the speed value of motorB is 20
 
      Val = Val + ChangeValue;
 
      if (Val == 0 || Val == 255)

     {

           ChangeValue = -ChangeValue;

     }

     delay(100);

 }

void back()

{

     digitalWrite(M1,HIGH);     

     analogWrite(E1, Val);   //PWM调速
 
     digitalWrite(M2,HIGH);

     analogWrite(E2, Val);   //PWM调速
 
     Val = Val + ChangeValue;
 
     if (Val == 0 || Val == 255)
     {

         ChangeValue = -ChangeValue;

     }

     delay(100);
}
 
void loop()
{

     foward();

     delay(500);

     back();

     delay(500);

}