Submitted By:
Deepak Singh
Harish Chandila
Lalit Kumar
Prakash Chand
Ruchee Chauhan

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MAGIC EYE ALARM
Introduction
Electronic eye or magic eye has much use in this electronic age. Also known as magic eye. It can be used as an automatic guest indicator at the door, if fixed at the bottom of the door entrance. Once it is installed at the door there is no need to install a call bell. It can also be used at homes or in banks as a burglar alarm.
WORKING PRINCIPLE
principle of working mainly depends on the
LDR
LDR is a device which has a resistance which varies according to the amount of light falling on its surface
BLOCK DIAGRAM
CIRCUIT DIAGRAM
COMPONENTS
Resistors : R1 - 2.2K
R2 - 100K
R3 - LDR
Capacitor : C1 - 0.02MFD
C2-0.1MFD
C3-22MFD 12V
IC : NE555 TIMER
Miscellaneous : Power supply
Speaker
LDR-Light dependent resistor
LDR IC C&R WORKINGS
If The intensity of light is more the resistance of the LDR is less
If The intensity of light is less the resistance of the LDR is more
The heart of the circuit is timer IC555.
which is here acting as oscillator to generate sound whenever shadow is cast on LDR .
Timer 555 is connected to operate in astable mode of operation . Resistors R1, R2 along with capacitor C2 & C3 are required to operate the time properly.
OBSERVATION&ANALYSIS
Electronic eye circuit works as light intensity indicator.
Speaker will be activated.
FUTURE SCOPE
We can increase the range of this equipment by using better sensor.
We can use this as Remote Controller.
MERITS
Low cost
Easy to construct
Portable
Low power consumption
Real time applications
DEMERITS
It is difficult to work with this equipment if there is no sufficient lighting conditions.
Unnecessary disturbances may occur while using in the Apartments
APPLICATIONS
It can be used as an automatic guest indicator at the door.
It can also be used in banks as a burglar alarm.
Electronic Eye is a vital component in any electric circuit which is to be turned on and off - for example, solar powered garden lights, and night security lighting.
An Electronic Eye can even be used in a simple remote control circuit using the backlight of a mobile phone to turn on a device
Once it is installed at the door there is no need to install a call bell.
Only 5V DC power supply is required for operating the circuit.

Dear sir,
thank you for this project. I will be glad if you would help me with the literature review on this topic.
thanks.

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please u guys
can u guide me through this project please
mail me at shvmvhsshukra[at]gmail.com

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