Introduction: Light Dependent Security System
it is a security system easy to make not any complex soldering done
antitheft as any body open light the buzzer start buzzing
Step 1: Material Required
2.a 9v battery
3. a buzzer
5.a some wire peices
Step 2: Make the Circut
take a 9v battery attach with buzzer and ldr as given in circut
Step 3: Make It Portable
take an old small box make hole for ldr and button design it u can put light also in the circut
Step 4: How It Works
place it in a dark room as any body opens light buzzer start buzzing
place anything on it if u say anybody not to take that thing and if it takes of the buzzer starts buzzing
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Please be positive and constructive.