Keywish Hummer-Bot, Инструкция по эксплуатации

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{
analogWrite ( M1 , 255 ); //the speed value of motorA is 255
analogWrite ( E1 , 0 );
analogWrite ( M2 , 0 );
analogWrite ( E2 , 255 ); //the speed value of motorB is 255
Serial . print ( dl );
Serial . print ( " " );
Serial . print ( dr );
Serial . print ( " " );
Serial . println ( "Turning around" ); /* Through the "Serial Monitor" print the current
status of the car and the value collected by the sensor.*/
delay ( 500 );
analogWrite ( M1 , 0 );
analogWrite ( E1 , 0 );
analogWrite ( M2 , 0 );
analogWrite ( E2 , 0 ); /* Rotate 180 degrees and stop */
delay ( 1000 ); //*********************************//Turning around
}
if ( dl <= 38 && dr >= 38 ) /* If the left sensor is less than or equal to 38 and the
right value is greater than or equal to 38, the following program in {} is executed (dl
<= 38, indicating that there is an obstacle on the left, dr> = 38 shows that there is
no obstacle on the left, so at this moment the car is turning to the side without
obstacle, that is, turning to the right)
{
analogWrite ( M1 , 180 ); //the speed value of motorA is val
analogWrite ( E1 , 0 );
analogWrite ( M2 , 0 );
analogWrite ( E2 , 180 ); //the speed value of motorA is val
Serial . print ( dl );
Serial . print ( " " );
Serial . print ( dr );
Serial . print ( " " );
Serial . println ( "Turning right" );
delay ( 300 );
analogWrite ( M1 , 0 );
analogWrite ( E1 , 0 );
analogWrite ( M2 , 0 );