const int controlPin2 = 5; // connected to pin 2 on the H-bridge
const int enablePin = 3;   // connected to pin 1 on the H-bridge
//https://arduino.stackexchange.com/questions/13326/controlling-dc-motor-speed

void setup(){

  pinMode(controlPin2, OUTPUT);
  pinMode(enablePin, OUTPUT);

  digitalWrite(enablePin, LOW);
  digitalWrite(controlPin2, LOW);

Serial.begin(9600);
Serial.println("Ready");
}


void loop(){
if (Serial.available() > 0) {
    int inByte = Serial.read();

    switch (inByte) {
    case '0':
  digitalWrite(enablePin, LOW);
   digitalWrite(controlPin2, LOW);
 Serial.println("OFF");
      break;
    case '1':

  digitalWrite(controlPin2, HIGH);
    analogWrite(enablePin, 50);
    Serial.println("CW slow");
      break;
          case '2':

  digitalWrite(controlPin2, HIGH);
    analogWrite(enablePin, 100);
    Serial.println("CW slow +");
      break;
          case '3':
  digitalWrite(controlPin2, HIGH);
    analogWrite(enablePin, 150);
    Serial.println("CW medium");
      break;
          case '4':
  digitalWrite(controlPin2, HIGH);
    analogWrite(enablePin, 200);
    Serial.println("CW fast");
      break;
          case '5':
  digitalWrite(controlPin2, HIGH);
    analogWrite(enablePin, 250);
    Serial.println("CW fast +");
      break;
    case '6':
  digitalWrite(controlPin2, LOW);
    analogWrite(enablePin, 50);
    Serial.println("CCW slow");
      break;
      case '7':
  digitalWrite(controlPin2, LOW);
    analogWrite(enablePin, 100);
        Serial.println("CCW slow +");
      break;
      case '8':
  digitalWrite(controlPin2, LOW);
    analogWrite(enablePin, 150);
        Serial.println("CCW medium");
      break;
       case '9':
  digitalWrite(controlPin2, LOW);
    analogWrite(enablePin, 250);
        Serial.println("CCW fast");
      break;
}
}
}