How to make a Laser Light Security Alarm08:43

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Explained with schematic and printed circuit diagram. How to make a Laser Light Security Alarm.
Circuit of Laser Light Security System was designed using EasyEDA: https://easyeda.com/editor#id=39f62d5…
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Important:
Watch this video for Working Explanation of ‘Laser Light Security Alarm’ Circuit: https://www.youtube.com/watch?v=LO4yg…

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 activates a buzzer or alarm.

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LIST OF USED COMPONENTS and their Links |SELECTED by TechEasyZone|
# Plain PCB (Printed Circuit Board) (x1) http://bit.ly/TEZ-pcb1 | http://bit.ly/TEZ-pcb2 | http://bit.ly/TEZ-pcb3
# PCB Etching Solution (Ferrous Chloride) (x1) http://bit.ly/TEZ-pcbEtching
# Transistor – BC-548 OR BC-547 (x2) http://bit.ly/TEZ-bc547 | http://bit.ly/TEZ-2bc547
# Resistor – 100 ohm (x3)
# LDR (Light Dependent Resistor) (x1) http://bit.ly/TEZ-ldr1 | http://bit.ly/TEZ-ldr2
# LED (Light Emitting Diode) (x1)
# Buzzer (x1) http://bit.ly/TEZ-buzz
# DC Switch (x1) http://bit.ly/TEZ-DCswitch
# DC Socket (x1)
# DC Adapter (5V) (x1)

# Battery Holder (x1) http://bit.ly/TEZ-BattHold | http://bit.ly/TEZ-BattHold2
# Laser Diode (x1) http://bit.ly/TEZ-lasDiode | http://bit.ly/TEZ-lasDiode2 | http://bit.ly/TEZ-lasDiode3
# ON/OFF Push Button Switch (6 pin) – (x1) http://bit.ly/TEZ-6PinPushBtn

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Instructor Name: Tabrez Alam
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Edited by: http://www.GFXtouch.Com

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