How to make a Laser Light Security Alarm

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Explained with schematic and printed circuit diagram. How to make a Laser Light Security Alarm.\r
Circuit of Laser Light Security System was designed using EasyEDA: \r
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Important:\r
Watch this video for Working Explanation of Laser Light Security Alarm Circuit: \r
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A laser alarm system operates by projecting a beam of invisible laser light across a doorway or window opening. When the light is broken, it ivates a buzzer or alarm.\r
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LIST OF USED COMPONENTS and their Links,\r
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Suggested best- Electronic Components Project Kit Breadboard, Capacitor, Resistor, LED, Switch (Comes in a box) : \r
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# Plain PCB (Printed Circuit Board) (x1) - \r
# PCB Etching Solution (Ferrous Chloride) (x1) - \r
# Transistor - BC-548 OR BC-547 (x2) - \r
# Resistor - 100 ohm (x3) - \r
# LDR (Light Dependent Resistor) (x1) - \r
# LED (Light Emitting Diode) (x1)\r
# Buzzer (x1) - \r
# DC Switch (x1) - \r
# DC Socket (x1)\r
# DC Adapter (5V) (x1)\r
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# Battery Holder (x1) - \r
# Laser Diode (x1) - \r
# ON/OFF Push Button Switch (6 pin) - (x1) - \r
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Instructor Name: Tabrez Alam\r
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