Laser Security Alarm System (With 15 Pictures)

Laser Security Alarm System (With 15 Pictures)

Simple Homemade Laser Security Alarm System Project.

Laser Security Alarm System

In this tutorial, I will show you step by step how to make a Laser Security Alarm System at home. It’s really very easy to make and anyone can do this. In this Laser Security Alarm System Circuit, I have placed LDR and Laser Light facing each other. The main component of this System is LDR which detects light and dark. Laser Light continuously falls on LDR. It gets activated when someone crosses it. You can use this Laser Security Alarm System to protect your house, shop and other things. I hope you will enjoy!

Watch the Video to visually see the detailed procedure….

The components you will require for making this Laser Security Alarm System:

  1. 9v Battery
  2. Battery Connector
  3. Buzzer
  4. Plastic Zip Tie – (1)
  5. Double Sided Tape
  6. Laser Light
  7. 100k Ohm resistor – (1)
  8. LDR – (1)
  9. BC547 Transistor – (1)
  10. LED – (1)
  11. Sketch Pen Cap – (1)

 

Steps to make a Laser Security Alarm System:

Step 1: First, connect positive side of the 9v battery connector to positive side of the buzzer as shown below.

laser

Step 2: Now connect one side of the 100k ohm resistor to positive side of the LED in the same way you connected buzzer and battery connector as shown below.

laser alarm

Step 3: Insert the LDR into sketch pen cap as shown below.

alarm

Step 4: Connect the LDR to collector and base of the BC547 Transistor as shown below.

BC547 Transistor

security

Step 5: Now solder them connected 100k ohm resistor and LED to positive of the 9v battery connector and buzzer as shown below.

buzzer

Step 6: Solder the 100k ohm resistor to base of the BC547 Transistor as shown below.

security alarm

Step 7: Solder the negative of the battery connector to the collector of the BC547 Transistor as shown below.

laser security

Step 8: Solder the negative of the buzzer to negative of the LED as shown below.

LED

Step 9: Now solder the emitter of the BC547 Transistor to negative of the buzzer and LED as shown below.

security system

Step 10: Attach buzzer using double-sided tape side of the 9v battery as shown below.

system

Step 11: Now attach sketch pen cap on the buzzer as shown below.

easy

Step 12: Now connect a 9v battery to the connector as shown below.

 laser light

Step 13: Using plastic zip tie press ON button of the Laser Light as shown below.

transistor

Step 14: Now using double sided tape attach Laser light on the small wooden piece as shown below.

security alarm

Step 15: Testing the Laser Security Alarm System. Focus the Laser light on the LDR and you will see the LED and Buzzer going “OFF” when someone crosses it LED and Buzzer going “ON” as shown below.

Laser Security Alarm Circuit

Now Your “Laser Security Alarm System” is ready! Enjoy!

Check out the video below to see a visual of this Laser Security Alarm System.

 

 

 

 

 

 

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