Super Simple Fun Laser Tripwire

1/ code written by: DigitalFendi Enjoy :)
2
3
4int ledPin1 = 2; //  green led pin(2)
5int ledPin2 = 4; // red led pin(4)
6int buzzerPin = 5; //  buzzer pin(5)
7int lightReader = A0; // photoresistor pin(A0)
8int freq = 2000;  // frequency for the buzzer (change # to effect the sound of buzzer)
9int x =  0; // initial value for x
10
11
12void setup() 
13{
14  Serial.begin(9600);
15  pinMode(ledPin1, OUTPUT);
16  pinMode(ledPin2, OUTPUT);
17  pinMode(buzzerPin,  OUTPUT);
18  pinMode(laserPin, OUTPUT);
19  pinMode(lightReader, INPUT);
20}
21
22void  loop() 
23{
24  
25  x = analogRead(lightReader); // this is for serial monitoring  purpose
26  Serial.print("Reading: "); 
27  Serial.println(x);
28  
29
30  if (x < 800) // if link between laser and photoresistor... (check serial monitor  and change this # to your liking) 
31    {
32      digitalWrite(ledPin1, LOW);  // turn green led off
33      digitalWrite(ledPin2, HIGH); // turn red led on
34      tone(5, freq); // buzzer sounds
35    }
36  else // if laser link is in  tact...
37    {
38      digitalWrite(ledPin1, HIGH); // turn green led on
39      digitalWrite(ledPin2, LOW); // turn red led off
40      noTone(5); // buzzer  does not sound
41    }
42}

1/ code written by: DigitalFendi Enjoy :)
2
3
4int ledPin1 = 2; //
5  green led pin(2)
6int ledPin2 = 4; // red led pin(4)
7int buzzerPin = 5; //
8  buzzer pin(5)
9int lightReader = A0; // photoresistor pin(A0)
10int freq = 2000;
11  // frequency for the buzzer (change # to effect the sound of buzzer)
12int x =
13  0; // initial value for x
14
15
16void setup() 
17{
18  Serial.begin(9600);
19
20  pinMode(ledPin1, OUTPUT);
21  pinMode(ledPin2, OUTPUT);
22  pinMode(buzzerPin,
23  OUTPUT);
24  pinMode(laserPin, OUTPUT);
25  pinMode(lightReader, INPUT);
26}
27
28void
29  loop() 
30{
31  
32  x = analogRead(lightReader); // this is for serial monitoring
33  purpose
34  Serial.print("Reading: "); 
35  Serial.println(x);
36  
37
38
39  if (x < 800) // if link between laser and photoresistor... (check serial monitor
40  and change this # to your liking) 
41    {
42      digitalWrite(ledPin1, LOW);
43  // turn green led off
44      digitalWrite(ledPin2, HIGH); // turn red led on
45
46      tone(5, freq); // buzzer sounds
47    }
48  else // if laser link is in
49  tact...
50    {
51      digitalWrite(ledPin1, HIGH); // turn green led on
52
53      digitalWrite(ledPin2, LOW); // turn red led off
54      noTone(5); // buzzer
55  does not sound
56    }
57}