Laser Light Alarm

In this project, I have made a laser light alarm using Arduino Uno like in movies.

Apr 12, 2021

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home automation

security

Components and supplies

ldr

Arduino UNO

Buzzer

cardboard

Slide Switch

Jumper wires (generic)

USB-A to Mini-USB Cable

9V battery (generic)

Tools and machines

Soldering iron (generic)

Hot glue gun (generic)

Apps and platforms

Arduino IDE

Project description

Code

codes for laser light alarm

c_cpp

1//codes by yashs lab
2
3void setup() {
4pinMode(13,OUTPUT);//connect  pin no.13 to buzzer positive
5pinMode(9,INPUT);//connect pin no. 9 to do pin of  ldr
6delay(500);
7}
8
9void loop() {
10if(digitalRead(9)==HIGH)
11{
12  
13digitalWrite(13,HIGH);
14}
15  
16  
17}
18

//codes by yashs lab

void setup() {
pinMode(13,OUTPUT);//connect  pin no.13 to buzzer positive
pinMode(9,INPUT);//connect pin no. 9 to do pin of  ldr
delay(500);
}

void loop() {
if(digitalRead(9)==HIGH)
{
  
digitalWrite(13,HIGH);
}
  
  
}

Downloadable files

laser light and ldr connections

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yashslab

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