int motorPin1a = 2; // pin 2 on Arduino
int motorPin2a = 3; // pin 3 on Arduino
int motorPin1b = 4; // pin 4 on Arduino
int motorPin2b = 5; // pin 5 on Arduino
int motorPin1c = 6; // pin 6 on Arduino
int motorPin2c = 7; // pin 7 on Arduino
int motorPin1d = 8; // pin 8 on Arduino
int motorPin2d = 9; // pin 9 on Arduino
int motorPin1e = 10; // pin 10 on Arduino
int motorPin2e = 11; // pin 11 on Arduino

int state;
int flag=0; 





void setup() {
  // put your setup code here, to run once:
pinMode(motorPin1a, OUTPUT);
    pinMode(motorPin2a, OUTPUT);
    //pinMode(enablePina, OUTPUT);
    // sets enablePin high so that motor can turn on:
    //digitalWrite(enablePina, HIGH);
    // initialize serial communication at 9600 bits per second:
    Serial.begin(9600);
    
    pinMode(motorPin1b, OUTPUT);
    pinMode(motorPin2b, OUTPUT);
    //pinMode(enablePinb, OUTPUT);
    //digitalWrite(enablePinb, HIGH);
    Serial.begin(9600);
    
    pinMode(motorPin1c, OUTPUT);
    pinMode(motorPin2c, OUTPUT);
    Serial.begin(9600);
    
        pinMode(motorPin1d, OUTPUT);
    pinMode(motorPin2d, OUTPUT);
    Serial.begin(9600);
    
        pinMode(motorPin1e, OUTPUT);
    pinMode(motorPin2e, OUTPUT);
    Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
//if some date is sent, reads it and saves in state
    if(Serial.available() > 0){     
      state = Serial.read();   
      flag=0;
    }   
    // if the state is '0' the DC motor will turn off
    if (state == '0') {
        digitalWrite(motorPin1a, LOW); // set pin 2 on Arduino low
        digitalWrite(motorPin2a, LOW); // set pin 3 on Arduino low
        
        digitalWrite(motorPin1b, LOW); // set pin 4 on Arduino low
        digitalWrite(motorPin2b, LOW); // set pin 5 on Arduino low
       
        digitalWrite(motorPin1c, LOW); // set pin 6 on Arduino low
        digitalWrite(motorPin2c, LOW); // set pin 7 on Arduino low
        
        digitalWrite(motorPin1d, LOW); // set pin 8 on Arduino low
        digitalWrite(motorPin2d, LOW); // set pin 9 on Arduino low
        
        digitalWrite(motorPin1e, LOW); // set pin 10 on Arduino low
        digitalWrite(motorPin2e, LOW); // set pin 11 on Arduino low

        if(flag == 0){
          Serial.println("Motor: off");
          flag=1;
        }
    }
    // if the state is '1' the motor will turn right
    else if (state == '1') {
        digitalWrite(motorPin1a, LOW); // set pin 2 on Arduino low
        digitalWrite(motorPin2a, HIGH); // set pin 3 on Arduino high
        if(flag == 0){
          Serial.println("Motor: right");
          flag=1;
        }
    }
    // if the state is '2' the motor will turn left
    else if (state == '2') {
        digitalWrite(motorPin1a, HIGH); // set pin 2 on Arduino high
        digitalWrite(motorPin2a, LOW); // set pin 3 on Arduino low
        if(flag == 0){
          Serial.println("Motor: left");
          flag=1;
        }
    }
    
    
        // if the state is '3' the motor will turn up
    else if (state == '3') {
        digitalWrite(motorPin1b, LOW); // set pin 4 on Arduino low
        digitalWrite(motorPin2b, HIGH); // set pin 5 on Arduino high
        if(flag == 0){
          Serial.println("Motor: up");
          flag=1;
        }
    }
    // if the state is '4' the motor will turn down
    else if (state == '4') {
        digitalWrite(motorPin1b, HIGH); // set pin 4 on Arduino high
        digitalWrite(motorPin2b, LOW); // set pin 5 on Arduino low
        if(flag == 0){
          Serial.println("Motor: down");
          flag=1;
        }
    }
    
    
        // if the state is '3' the motor will turn up
    else if (state == '5') {
        digitalWrite(motorPin1c, LOW); // set pin 6 on Arduino low
        digitalWrite(motorPin2c, HIGH); // set pin 7 on Arduino high
        if(flag == 0){
          Serial.println("Motor: up");
          flag=1;
        }
    }
    // if the state is '4' the motor will turn down
    else if (state == '6') {
        digitalWrite(motorPin1c, HIGH); // set pin 6 on Arduino high
        digitalWrite(motorPin2c, LOW); // set pin 7 on Arduino low
        if(flag == 0){
          Serial.println("Motor: down");
          flag=1;
        }
    }
    
    
     // if the state is '3' the motor will turn up
    else if (state == '7') {
        digitalWrite(motorPin1d, LOW); // set pin 8 on Arduino low
        digitalWrite(motorPin2d, HIGH); // set pin 9 on Arduino high
        if(flag == 0){
          Serial.println("Motor: up");
          flag=1;
        }
    }
    // if the state is '4' the motor will turn down
    else if (state == '8') {
        digitalWrite(motorPin1d, HIGH); // set pin 8 on Arduino high
        digitalWrite(motorPin2d, LOW); // set pin 9 on Arduino low
        if(flag == 0){
          Serial.println("Motor: down");
          flag=1;
        }
    }
    
    
            // if the state is '3' the motor will open the claw
    else if (state == '9') {
        digitalWrite(motorPin1e, LOW); // set pin 10 on Arduino low
        digitalWrite(motorPin2e, HIGH); // set pin 11 on Arduino high
        if(flag == 0){
          Serial.println("Claw: open");
          flag=1;
        }
    }
    // if the state is '4' the motor will close the claw
    else if (state == '10') {
        digitalWrite(motorPin1e, HIGH); // set pin 10 on Arduino high
        digitalWrite(motorPin2e, LOW); // set pin 11 on Arduino low
        if(flag == 0){
          Serial.println("Claw: Close");
          flag=1;
        }
    }
}