Sound alert traffic-light

1
2/*created by:Dorsa Farzam. in this project we will tur-on and off
3  3 LED's consequently and when the third LED is on    
4 the buzzer will start
5  to beep for 500ms and then it will tur off for another 500 ms. this will happen
6  repeatedly.
7 *  this experiment has been operated on the ARDUINO-UNO R3 board.
8
9  *  this experiment has also been simulated with  Proteus software */
10 
11 const
12  int ledRed= 7;// led is connected to pin 7
13 const int ledYellow=4;// led is connected
14  to pin 4
15 const int ledGreen=2;// led is connected to pin 2
16 const int buzzer=8;//
17  Buzzer is connected to pin 8
18 void setup() {
19  pinMode(ledRed,OUTPUT); //
20  the led is used as an output
21  pinMode(ledYellow,OUTPUT);// the led is used as
22  an output
23  pinMode(ledGreen,OUTPUT);// the led is used as an outpout
24  pinMode(buzzer,OUTPUT);//
25  the Buzzer is used as an output
26 }
27
28void loop() {
29digitalWrite(ledRed,HIGH);
30  // access the voltage to the ledRed
31digitalWrite(ledYellow,LOW);//ledYellow is
32  off
33digitalWrite(ledGreen,LOW);//ledGreen is off
34delay(5000); // wait for
35  5000ms 
36digitalWrite(ledRed,LOW); // ledR is off
37digitalWrite(ledGreen,LOW);//ledG
38  is off
39digitalWrite(ledYellow,HIGH);// ledY is on
40delay(2000); // wait for
41  2000ms 
42digitalWrite(ledRed,LOW);// ledR is off
43digitalWrite(ledYellow,LOW);//
44  ledY is off
45digitalWrite(ledGreen,HIGH);// led green is on 
46delay(4000);//
47  wait for 4000 ms 
48digitalWrite(buzzer,HIGH);// the buzzer is on 
49delay(500);//
50  the buzeer will beep for 500ms
51digitalWrite(buzzer,LOW);//the buzzer is off now
52  
53delay(500);// wait for 500ms
54digitalWrite(buzzer,HIGH);// the buzzer is on
55  again 
56delay(500);// wait for 500ms
57digitalWrite(buzzer,LOW);// the buzzer
58  is off now
59
60}
61

1
2/*created by:Dorsa Farzam. in this project we will tur-on and off  3 LED's consequently and when the third LED is on    
3 the buzzer will start  to beep for 500ms and then it will tur off for another 500 ms. this will happen  repeatedly.
4 *  this experiment has been operated on the ARDUINO-UNO R3 board.
5  *  this experiment has also been simulated with  Proteus software */
6 
7 const  int ledRed= 7;// led is connected to pin 7
8 const int ledYellow=4;// led is connected  to pin 4
9 const int ledGreen=2;// led is connected to pin 2
10 const int buzzer=8;//  Buzzer is connected to pin 8
11 void setup() {
12  pinMode(ledRed,OUTPUT); //  the led is used as an output
13  pinMode(ledYellow,OUTPUT);// the led is used as  an output
14  pinMode(ledGreen,OUTPUT);// the led is used as an outpout
15  pinMode(buzzer,OUTPUT);//  the Buzzer is used as an output
16 }
17
18void loop() {
19digitalWrite(ledRed,HIGH);  // access the voltage to the ledRed
20digitalWrite(ledYellow,LOW);//ledYellow is  off
21digitalWrite(ledGreen,LOW);//ledGreen is off
22delay(5000); // wait for  5000ms 
23digitalWrite(ledRed,LOW); // ledR is off
24digitalWrite(ledGreen,LOW);//ledG  is off
25digitalWrite(ledYellow,HIGH);// ledY is on
26delay(2000); // wait for  2000ms 
27digitalWrite(ledRed,LOW);// ledR is off
28digitalWrite(ledYellow,LOW);//  ledY is off
29digitalWrite(ledGreen,HIGH);// led green is on 
30delay(4000);//  wait for 4000 ms 
31digitalWrite(buzzer,HIGH);// the buzzer is on 
32delay(500);//  the buzeer will beep for 500ms
33digitalWrite(buzzer,LOW);//the buzzer is off now  
34delay(500);// wait for 500ms
35digitalWrite(buzzer,HIGH);// the buzzer is on  again 
36delay(500);// wait for 500ms
37digitalWrite(buzzer,LOW);// the buzzer  is off now
38
39}
40