Setting Up a Continuous Motor Circuit

 /*
  *  Jung Min Yean
  *  Learning How to Use a Continuous Motor
  *  04/23/2019
  */

const int motorPin = 9;

void setup()
{
  pinMode(motorPin, OUTPUT);
  Serial.begin(9600);
}

void loop()
{
for (int i = 0; i<255; i++)
{
  analogWrite(motorPin,i);
  delay(10);
}
delay(100);

for (int i = 255; i>0; i--)
{
  analogWrite(motorPin,i);
  delay(10);
}
delay(100);
}