Security Alarm with LDR | LDR Latch Circuit

part's list:-
1 bc547 transistor
1 220 ohm resistor
1 330 ohm resistor
1 Bright 5mm led
1 LDR (Light Dependent Resistor)
1 6v power supply (3.7 v also will work)
1 6V relay (optional)

[@ankurverma1624]

Made the similar kinda project in science exhibition when I was in std 8 with LDR but it was for preventing accidents in blind u turns and won the interstate 1st prize...... Your video took me to that.... Good work buddy

[@MrRaulPeeDeeJay]

You must use a diode connected in reverse polarization to relay dc input to suppress reverse currents that may damage transistors and other components. Remember that relay is an inductive electric load that generate big reverse currents when it switchs off

[@imnotbeluga007]

At 3:24, a diode connected in antiparallel through a resistor is shown. So it's protected a bit, although I would still add a diode to the relay like you.

[@gandlaroopesh_kumar2085]

Bhayya..bahuth accha Kiya aapne..keep doing like dis

[@mohammadjulhas9260]

Wow sopar very very nice vedio I like it

[@APsir-cz5ks]

Love u bro
.
Fantastic
Superb.
Expecting more
Love from all of our team.
Love

[@undefined_exception_0]

Yes it really work!!👍

[@farming-accuracy]

Mere pas kam nhi kr raha, light dim hai
Bahot kam roshni hai

[@muhammadrafiqulislamkhan6994]

One good sign for you. You give details in your description. It means you are serious about your video. If it works then it should be very helpful for the orhers. Thank you.

[@Alien-Enemy]

Хороший канал для детей 7-12 лет. Продолжай, детям в самый раз. Те кто постарше и посмышленее уже на Ардуино экспериментируют.

[@allbo-nov9992]

Как не странно будет тебе читать - мне за 50, а идеи некие его, уже пригодились и мне

[@anekpalnowchenalanekpal1355]

Anekpal good

[@emilyuraeva1118]

Дело в том, что на Ардуино подобный проект реализуется в два счёта, но это нецелесообразно - применять целый микроконтроллер, там, где он вовсе не нужен.

[@user-kx5of8yo1s]

Те, кто постарше используют голую атмегу , а не ардуино. Для детей мля. Такие дети понятия не имеют, как с рассыпухой работать и подбирать компоненты, это тебе не светодиодик с дилеями зажигать . Попробуй без мк простую логику сделай сам на операционниках хотя бы. Ардуино как раз для детей и для тех, кто не осилил нормальный код. А для тех кто не осилил среду ардуино, тоже есть выход блок-генератор программ , ваще ничего знать не надо уже , дошкольник справится.

[@imnotbeluga007]

16 y.o that does more tinkering than learning...

[@afzl_007]

It works. But in circuit diagram given that 6v is the dc supply. It is wrong. 9v is the dc supply🥰🥰

[@abhinetexperiment102]

Amazing Fact

[@bkshivamrit]

Apka peahala video dekrahu Mujhe Aachchhalaga

[@asmarok9804]

Terimakasih atas ilmunya semoga bisa mencerdaska anak bangsa

[@Mingming_Studio]

That's really cool! I like it

[@cobausk]

Maravilha simples mas funcional . Parabéns

[@cetintori]

hi, the scheme of the relay is different from the video?Video installation is different,good jod !!

[@Obamjur]

Great job, thank you!

[@pnrscreations7783]

It's excellent man

[@jacopogunzap773]

Florin salam

[@saikodati2846]

Super..bro

[@H0bi8o.]

100000 makasih bos channel ini karena membantu tugas sekolah ku

[@kalpanaramachandran1647]

Omg that's great

[@tryingtomake9871]

Very good and new idea.

[@maeditor7506]

good

[@khushi-jy6um]

Thanks bro

[@imvengeanc7]

You are great

[@chandankumarrout4423]

Nice video

[@zayedson711]

Thank you. It will be great if you put a clear image of the circuit diagram along with explanation of how the circuit works, with brief of each component role in the circuit

[@chittinaga3135]

He won't give

[@shavkatyahyoev6730]

Хороший канал для начинающих

[@habeebabduraheem4723]

Nice work

[@Bercik_the_official]

Nice bro

[@momofpv1371]

Super cool.😏🤠

[@karoo2227]

Simple and good job

[@indupattnaik8150]

Plz ac pe same circuit ka ek vdo as soon as possible plz 🙏🙏

[@MrSyedabuthahir]

Nice video and your circuit is working, thanks for sharing this video.
When I use 12v 900ma charger for power supply relay does not get enough power in relay i am getting 3.78v but relay is 6v volt relay.
Is there any solution for that

[@gbenother8755]

Replace the resistors with trimmer potentiometers. Play with various settings while monitoring voltage at the relay. Once you find values that work reliably, replace the pots with fixed resistors, or else put a dab of nail polish on the pot to keep the setting. Be careful not to overdrive the led. Another idea, simpler, would be to locate a 3 volt relay.

[@fortechnicallearners1470]

Good

[@aveshmaurya490]

supprrr video bhai

[@luisantoniomarrega1120]

Pequeno circuito interessante, gostei pela simplicidade! Rio de Janeiro RIO DE JANEIRO BRASIL

[@sammatthew7]

It works 😊 thanks mann

[@loscordero]

BUEN PROYECTO SALUDOS DESDE DOMINICANA LO HARÉ GRACIAS

[@vikasvats5335]

Very nice

[@TontonRedPill]

😱👍👍👍👍
+ 1 abonné !
(Wonderfull music)

[@user-uv1ho6sz6p]

شرح ممتاز ممكن دائره منبه لساعه حائطبرن حل ساعه وتعرفني الوقت

[@sivasankaran3806]

Supr bro...nice

[@technicalprabhat9746]

Very very nice video bolke banaye

[@krishnaraj310]

Good and nice 👍👍👍

[@bipinmishraphaphamau5424]

very nice sir

[@sunils1637]

Thanks yar it works thank u so much

[@quicktech7450]

ua-cam.com/video/YDGo2_ty4nc/v-deo.html
see my project video

[@dorasen7016]

What type of transistor used in this project?

[@user-gu4qg1ed2h]

Good 👍

[@sheela.s9748]

Can use any Regesister for this?

[@kingamar64]

Well done

[@devendrasen2079]

Power bank ke upar bhi ek video bando

[@MkPOWERBD]

*_nice_*

[@ayemakegame]

I want the background music name! please..........

[@shaunakdas1852]

What is the current range for this setup

[@aryansingharyansingh1584]

very nice

[@michaelalfonso3069]

nice idea

[@TheElectronick]

From that we can build an automatic street lamp with that circuit
Coz there are some people who is lazy to turn it on & off😑😑

[@alanbitencourt3606]

Muito bom!

[@chandankumarrout4423]

Bhai ek power bank banakr dikhao

[@irfanmustafa9235]

Amazing

[@keerthanacharya8148]

Nice technique

[@dedoenlallaga1]

Cuál es la distancia que trabaja el ldr y el led. Para colocarlo en una puerta por ejemplo.

[@AYUSHGUPTA-dx6zp]

Very very good

[@TechIdeasAG]

Thanks

[@asanga911]

Using an ultrasonic sensor. Can you give us a garage parking distant alarm sensor circuit?

[@HGS5601]

Hey, the resistor you used in the video is 33 Ohms...Orange-Orange-Black not Brown ...

[@rajanelli]

I noticed it right away. Same with the 220 ohm resistor. It is 22 ohms.

[@mainumainoddhin8274]

Hugo Gutiérrez Salazar
Yes

[@cleitonribeiro5520]

Ml

[@Bichu709]

dont wery next project carfull

[@Red-Feather]

I got confused with the reverse pins. E-B-C vs C-B-E.

[@abdulgani-gu9wv]

Wonderful

[@marcelosombra1279]

Show de bola👏👏👏👏

[@vdstatus6343]

Nice yar

[@mr.nathshort648]

Nice

[@onlytech5176]

excellent

[@artiva1024]

А можно схему только что бы светодиод загорался в темноте

[@theelectroniccity9571]

Super

[@florinpetrache7834]

your resistors have 0,25w ?it could work at 5v to start the led or diode laser?

[@dhananjaykale9225]

Sir one doubt
How security visible in this project
I mean at what baisi we can say its securty alarm

[@jakelargadastv6743]

very nice cool

[@suseelaboddeti1430]

Sir i have to design ir detector circuit it was have to detector when it get input of 5mw laser input to that detector is there any solution help me

[@technicalgyan4127]

Please upload the part 2 of the quadcopter making using fs-ia6b receiver and kk2.1.5 flight controller

[@ruban9914]

Ldr

[@tharun5613]

9v can we ❔

[@florinpetrache7834]

what is power source ?a battery or an adaptor?

[@bkshivamrit]

Om shanti' Doshto super very good

[@TechIdeasAG]

Thanks

[@prelectricianelectronics4663]

how does full wave bridge rectifier work,
how full wave bridge rectifier works,
what is full wave bridge rectifier

[@yamunanagar6325]

I LOVE YOU MERE BHAI

[@TechIdeasAG]

Thanks

[@oluwatimilehinolujide6823]

Thanks but I don't know why mine didn't work.
I used 220ohm, a BT 136 and ldr.
It never worked properly

[@amitkumar-nv5ru]

Nice .indeed switch yard pojacat

[@hariprasanth5720]

Post video for object counter using LDR

[@lethallad1433]

Would it work to same with an infrared light and infrared light receiver as it would be a lot more hidden

[@rajveerstudiouperaofficial9309]

Aap ne out put me jo led lagai hai isaki jagh chhoti electric motar jodana hai to input kitana dena chahiye??
Or vo kis tarah ka hona chahiye ac ya dc ??
Plz answer dena sar

[@TechIdeasAG]

The led is a part of the circuit, it's not output. You can use a relay to drive a ac load as shown at the last of the video

[@jaiprakashdabral744]

thanks bro

[@graphy254ke8]

HOW I GET THE INDIVIDUAL COMPONENTS

[@ademsanlav3291]

It is nice

[@msveer7848]

Can I use another resister beside330 ohm?

[@munir8643]

Masuk pak eko

[@shahhusain8155]

Kitne kitne man ka dayod lagate hai use bhi sath me batao to ham bhi kosis kare

[@scoutscancun3617]

mine keeps making noise even when the laser is on, just a little lower in volume, anyone know what might be wrong?

[@electromagic3111]

Hi nice video the risistance 33 or 330 ohm???

[@user-hh6lg4tb1w]

Super!!

[@afzl_007]

What is the usage bro. I dont get it. Plz explain how it be usefull for our society

[@lipikapress7098]

I like it

[@jayadevana7156]

What is the name of tool you using...

[@gabrielbolanoshernandez7915]

WHAT KIND OF CAUTIN IS THAT? WHAT'S IS THAT SPECIAL WELDER

[@evolutionfilms1]

Sooo...i have been looking att these laser light security diagrams and I find one major fault. How am I gona keep a laser light on for 24/7????

[@imnotbeluga007]

Make a backup system that uses an AC adapter at first, and if an outage happens it goes off the battery. Such a system is easy to make, you just need another relay. To prevent it from restarting and beeping, use a big capacitor. It won't discharge much with a 5 millisecond voltage relay contact disconnection..