Automatic night lamp using 555 timer ic and LDR




I have made an automatic night lamp using a 555 timer ic and LDR.
the circuit diagram is shown below.


the components values are-
R1= 1k ohm                                         C1=104 pf
R2=100k ohm(pot)                               C2=60 microfarad
R3=100k ohm

the output of timer ic is connected to a bulb through a relay. As there is darkness over the LDR, the relay is switched on and the bulb glows. but when there is light/day the bulb is off.


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