Electronic eye -science project

Electronic Eye" will give you a  chance to have a bit of privancy. It can be also used as Burglar Alarm.There are many alarms  available to protect  one's property and life. This  circuit will work as burglar alarm which will help you sleep at night. In the circuit,the gadget consists of an oscillator. This is triggered by the LDR (Light dependent resistor). Under normal conditions when LDR  is  kept  illuminated, no sound is produced from speaker. Now  whenever the beam of light, falling on LDR   uninterrupted the  resistance  of  LDR  goes  high and the oscillator produces audible note.