How to make Laser Security Alarm System on Breadboard at Home

In this video, I have shown how to make a simple Laser Security alarm system for home on the breadboard by using BC547 transistor. After watching the complete video you can easily design the laser alarm circuit on a breadboard for home.
I have received the required components from LCSC.com
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Required Components with LCSC.com purchase link:
1) BC547 Transistor - 1 no- lcsc.com/produ...
2) LDR or Photoresistor - 1 no- lcsc.com/produ...
3) 5mm LED (any color) - 1 no lcsc.com/produ...
4) 39K/47K-ohm 0.25watt Resistor - 1 no lcsc.com/produ...
5) BreadBoard - 1 no lcsc.com/produ...
6) Battery Holders - 1no lcsc.com/produ...
7) DC Buzzer - 1no lcsc.com/produ...
8) connecting wire
9) 9v battery or Mobile charger
In this video, I have shown how to make laser light security alarm circuit in steps so that you can make the laser security system for the home in 5 minutes. To supply the circuit you can also use an old mobile charger.
This project is also part of DIY Home security system, which can be made and installed easily at home with some basic electronics components.
#LaserSecurity #ElectronicsProjects #techstudycell
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[@cndbrn7975]

Great tutorial, thanks ..

[@TechStudyCell]

Thanks

[@FarrasRejkh]

nice bro, your video very very helpfull, thank you

[@vijaywarke8529]

Good explained

[@TechStudyCell]

Thanks

[@Cdswjp]

excellent explanations

[@TechStudyCell]

Thanks

[@nagaberak3568]

Fabulous work...What else do we need to turn off the buzzer manually? I mean if we need the buzzer will keep buzzing eventhough the laser light resume hitting the LDR for the 2nd time and so on until we turn it off manually to make it applicable for home security. Thanks anyway, Sir.

[@maryamkhalid7477]

Very very helpful video
The best thing is that this is explained with circuit diagram...
Thank u sooooo much 🙂🙂🙃🙃

[@TechStudyCell]

You are welcome 😊

[@taruncariappa7467]

Very good circuit. Can u modify the circuit so that the buzzer will continue to work even after the laser beam falls back on the ldr. This could be reset with a switch

[@TechStudyCell]

ok.. noted

[@vahini.]

can you let me know what to modify , im facing the same situation

[@andym5195]

good stuff! could you change the resistor or have a variable resistor in there to allow for ambient light hence give the pthing some sensitivity do ya think??

[@neelamkandpal9932]

my questions is that i have connected everything properly but still buzzer and light keep work though intensity change but why its working when laser fall on it

[@mayothtv1483]

Thank u you may helop me the list name of those component that you have used

[@sanjoypondit843]

After a long time.... Good content

[@TechStudyCell]

Thanks for the feedback.

[@electronic7979]

Nice project 👍

[@emeraldgrape2222]

i need hlep the moment i put the bateery it already started buzzing and when i turn off lights it stop when i put the lase to the ldr it shines brighter and becomes louder

[@shadowninja883]

What is gnd bro? Is it necessary to include in circuit diagram?

[@naderhumood1199]

Good job Sir. .. you are really .delegint guy...keep going. .....👍

[@TechStudyCell]

Thank you for your support.

[@JiyaDubal]

A normal laser can work?

[@mukeshbanthia6092]

Can we use bc 557 transistor

[@h2o-fpv623]

Yes thank u i was looking to do a simple project like this one and effective thank u so much.

[@TechStudyCell]

Thanks for your feedback. For more such simple projects please visit our channel techstudycell.

[@rashmithaj6064]

After giving laser also the buzzer is making sound what is wrong ?

[@memesmaster2308]

I am using 3mm ldr but it is not working

[@harman2232]

What is the range of lazer .

[@andym5195]

depends on the laser strength

[@jitk7072]

it is 2.2 k ohm resistor

[@jitk7072]

use a jumper wire

[@jitk7072]

if the laser light is on then the buzzer beeps

[@kavithapalanivel]

Pls diagram link

[@TechStudyCell]

pls watch video

[@komaliesguys3416]

Even the light is on the light is glowing

[@TechStudyCell]

As I have turned off the laser so the LED is glowing. Buzzer or LED will turn off if the laser light fall on the LDR.

[@memesmaster2308]

I am using 3mm ldr but it is not working