555 Timer Laser Alarm Security Circuit

This is a laser alarm security circuit using 555 timer IC.
You can adjust alarm time. (after laser beam restored)
The schematic is in the video.
555 타이머 IC 를 이용한 레이저 알람 회로입니다.
(레이저가 복구된 후) 알람 시간을 조절할 수 있습니다.
회로도는 영상에 등장합니다.

[@MyBigThing2010]

GREAT VIDEO! That's the way it should be done..a little more talking would be nice HAHA...thanks for including the schematic in the VIDEO and not leaving that important info out or linking it to dine external website...very easy to take a screen shot and use it to help with building the project. GREAT JOB!

[@ReasonForemost]

Good practical alarm circuit that is very well demonstrated and constructed, and really appreciate color coded schematic at the end. Thanks

[@mitsync]

Very cool and simple! I'm considering just buying a 10 pack of 555 because of how much you can do with it.

[@armaanyt4588]

can I use bc547 instead of c1815

[@vigneshkailas1561]

Thanks Mann for your great job ,all projects u introduced were very fascinating and I think the other viewers feel the same , i recommend u to add other projects the circuit diagram alsooo

[@katill9699]

Please show the formula clearly 🙏

[@MCsCreations]

Really nice, bro! If you can, please make a version with a continuous buzzer (without the 555 timer)!

[@ThomasKim]

Continuous version is very simple. ua-cam.com/video/kiuVNtm59jE/v-deo.html

[@MCsCreations]

Thomas Kim Thanks a lot! :D

[@QLTD]

Thank you for the videos

[@igrewold]

Wonderful!

[@WayneTheSeine]

Clear as ....... well.....mud.

[@aloksingh8485]

What is capacitor value . Volt

[@fraterin5156]

Hello sir, I'm following you from Turkey I wonder how can I reach you?

[@diyfrpandrepairs2669]

mine doesn't work. can anybody help me?

[@TerVentures]

I still can't make it.

[@arrafiingoprekz6003]

Sir can you share the schematic? Pls, I need for learning

[@alejandrocolorado3309]

Excelente!

[@ThomasKim]

Thanks.

[@许愿-x7j]

how about in dark environment?

[@ThomasKim]

啦表看我 It works better

[@anikahamed6833]

speaker koto volter deoa lagbe?

[@gajanand.7382]

Which capacitor u choose

[@tamalt4604]

this circuit stays on ...there is something..i have tried numnerous times from scratch

[@ThomasKim]

This type of circuit does not work in bright places.

[@tamalt4604]

@@ThomasKim hello sir... please show us a improved circuit that can give a warning short alarm on first trigger and on subsequent trigger a full blown alarm for a set amount of time

[@tamalt4604]

Also just curious..... how long can a laser led diode can run continuously.....i need it to run all through the night .....can it survive in real life.

[@vasishtaramgundam4436]

Plzzz give me a link to the circuit

[@akshaytechvlogs4538]

Circuit diagram is at 5:55

[@rajeshkumawat9045]

Please send me these components value

[@hafsa9771]

Can u please provide me its multisim simulation ?

[@anikahamed6833]

speaker volt= ?

[@anikahamed6833]

alarm always turning on, Because i used LDR.
working principal ofLDR=CDS at this curcuit
?

[@anikahamed6833]

please give me my answere.............

[@smnkumar002]

Same problem here

[@akshaytechvlogs4538]

@@anikahamed6833 same prblm

[@tanohack]

I can add a relay instead of buzzer?

[@ThomasKim]

Tano Doc yes. And add diode too.

[@medranoiancedrickc.9626]

What is cds ?
It is ldr?
Reply me back please

[@akshaytechvlogs4538]

Same doubt

[@irshadkhan186]

bhai circuit diagram dilhao

[@raihanabir6736]

what is cds

[@smnkumar002]

Cadmium sulphide

[@akshaytechvlogs4538]

@@smnkumar002 can we ldr as cds