Dual-Channel DC Motor Driver-12A (แท้จาก DFRobot)

/*
This sample code is for testing the 2 stepper motors
The rotation velocity can be adjusted by the code switch
Microcontroller: Arduino UNO
*/
int PWM1 = 2;
int INA1 = 3;
int INB1 = 4;
int PWM2 = 5;
int INA2 = 6;
int INB2 = 7;
void setup()
{
pinMode(PWM1, OUTPUT);
pinMode(INA1, OUTPUT);
pinMode(INB1, OUTPUT);
pinMode(PWM2, OUTPUT);
pinMode(INA2, OUTPUT);
pinMode(INB2, OUTPUT);
}
void loop()
{
digitalWrite(INA1, LOW);
digitalWrite(INA2, LOW);
digitalWrite(INB1, HIGH);
digitalWrite(INB2, HIGH);
analogWrite(PWM1, 255); //PWM adjust speed
analogWrite(PWM2, 255); //PWM adjust speed
delay(1000);
digitalWrite(INA1, LOW);
digitalWrite(INB1, HIGH); //Motor 1 rotate forward 
digitalWrite(INA2, HIGH);
digitalWrite(INB2, LOW); //Motor 2 rotate backward 
analogWrite(PWM1, 255); //PWM adjust speed
analogWrite(PWM2, 255); //PWM adjust speed
delay(1000);
digitalWrite(INA1, LOW);
digitalWrite(INB1, LOW); //Motor 1 stop 
digitalWrite(INA2, LOW);
digitalWrite(INB2, LOW); //Motor 2 stop 
analogWrite(PWM1, 255);
analogWrite(PWM2, 255);
delay(1000);
}