You can easily make laser security system.  To make this system I am using LDR (light dependent resistor), one Laser, 5 volt Relay, Variable resistor, 1.6k resistor and one siren light.

 

Video demo:


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6 Comments
  1. chirag patel 8 years ago

    can you please send me the circuit diagram of this video???
    thanks

  2. Joan 8 years ago

    It’s nice! Is it for sale?

  3. rahul 7 years ago

    Can you please send me a circuit

  4. Honey 5 years ago

    Can you please send me a circuit…

  5. Aparicht 4 years ago

    Give me the ckt diagram of this project

  6. Ironman 4 years ago

    Sir circuit diagram please

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