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
antitheft as any body open light the buzzer start buzzing
Material Required
1.a switch
2.a 9v battery
3. a buzzer
4.a ldr
5.a some wire peices
2.a 9v battery
3. a buzzer
4.a ldr
5.a some wire peices
Make the Circut
take a 9v battery attach with buzzer and ldr as given in circut
Make It Portable
take an old small box make hole for ldr and button design it u can put light also in the circut
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
place anything on it if u say anybody not to take that thing and if it takes of the buzzer starts buzzing