1String voice;
2
3#define lockPin 12
4#define unlockPin 11
5void   setup() 
6{                                            // put your setup code   here, to run once:
7  Serial.begin(9600);
8  pinMode(lockPin, OUTPUT);
9  pinMode(unlockPin,   OUTPUT);
10 
11}
12void loop() {
13 
14  while (Serial.available())   //Check   if there is an available byte to read
15  {                            
16  delay(10);                    //Delay added to make thing stable
17  char c = Serial.read();       //Conduct a serial read
18  voice += c;                  //Shorthand for   voice = voice + c
19  } 
20
21  if (voice.length() > 0) {
22    Serial.println(voice);
23   if(voice == "door lock")//                             
24     {
25   
26      digitalWrite(lockPin,HIGH);
27     delay(3000);
28     digitalWrite(lockPin,LOW);
29     
30     }  
31  else if(voice == "door unlock")//                              
32      {
33    
34    digitalWrite(unlockPin,HIGH);
35     delay(3000);
36     digitalWrite(unlockPin,LOW);
37      }
38 voice="";                                                       //Reset   the variable after initiating
39  }}

1String voice;
2
3#define lockPin 12
4#define unlockPin 11
5void
6  setup() 
7{                                            // put your setup code
8  here, to run once:
9  Serial.begin(9600);
10  pinMode(lockPin, OUTPUT);
11  pinMode(unlockPin,
12  OUTPUT);
13 
14}
15void loop() {
16 
17  while (Serial.available())   //Check
18  if there is an available byte to read
19  {                            
20  delay(10);
21                   //Delay added to make thing stable
22  char c = Serial.read();
23      //Conduct a serial read
24  voice += c;                  //Shorthand for
25  voice = voice + c
26  } 
27
28  if (voice.length() > 0) {
29    Serial.println(voice);
30
31  if(voice == "door lock")//                             
32     {
33   
34
35     digitalWrite(lockPin,HIGH);
36     delay(3000);
37     digitalWrite(lockPin,LOW);
38
39    
40     }  
41  else if(voice == "door unlock")//                              
42
43     {
44    
45    digitalWrite(unlockPin,HIGH);
46     delay(3000);
47     digitalWrite(unlockPin,LOW);
48
49     }
50 voice="";                                                       //Reset
51  the variable after initiating
52  }}