SIMPLE PROJECT FOR BEGINNER.

1int green=8;
2int yellow=9;
3int red=10;
4int push=1;
5int buttonstate=1;
6int buzzer=2;
7void setup() {
8  // put your setup code here, to run once:
9pinMode(green,OUTPUT);
10pinMode(yellow,OUTPUT);
11pinMode(red,OUTPUT);
12pinMode(push,INPUT);
13pinMode(buzzer,OUTPUT);
14
15}
16
17void loop() {
18  // put your main code here, to run repeatedly:
19digitalWrite(green,HIGH);
20buttonstate=digitalRead(push);
21if(buttonstate==0){
22  delay(500);
23  digitalWrite(green,LOW);
24  digitalWrite(yellow,HIGH);
25  delay(2000);
26  digitalWrite(yellow,LOW);
27  digitalWrite(red,HIGH);
28  for(int i=0;i<8;i++){
29    digitalWrite(buzzer,HIGH);
30    delay(500);
31    digitalWrite(buzzer,LOW);
32    delay(500);
33  }
34  delay(500);
35  digitalWrite(red,LOW);
36  digitalWrite(yellow,HIGH);
37  delay(2000);
38  digitalWrite(yellow,LOW);
39 
40  
41}
42}