Automatic ON and OFF Light Switch | Simple DIY Project

This device turns lights on automatically when it's a night, and off when it is a daytime, just like street lighting.
How it works: This device turns light bulb ON when it senses darkness and turns the light bulb off when it senses light.
What you need to build this device:
1. MOSFET 2N7000
2. Light dependent resistor LDR07
3. 470k resistor
4. 12V Relay
5. 12V Power Source
6. Wires.

[FlowerRFabulous]

you are the FIRST and ONLY person that has made this make sense after hours and hours of researching how this works!!!

[heathermccune]

I have been looking for a simple relay switch to ad to a yard light. This is PERFECT and very well explained. Thank you

[rickshabin]

You might want to put a diode across the solenoid to protect the transistor from back EMF. and also if you include a variable resistor you can adjust the switching point.

[electricalworld]

U r using transister LDR resister & rele & this is working excellent work man always made like this video

[jomsshygu]

Great vid! How do you fix the feedback light in actual application? Maybe reduce the sensitivity? Or a latch?

[gopalshekar]

Great project ! 👏👏Very simple to.build, just a few components 👌

By the way, i thought we need to have a free-wheeling diode connected across the relay, to protect the Mosfet against the back emf

[brucecummings]

Well explained, thank you and baraka Allah fik

[sunantoro]

Is there any apparent benefit of using a Mosfet instead of ordinary universal Transistors? Using ordinary transistor need a schmidt Trigger circuitry as well otherwise the Relay chatters when the light is "half bright half dark"

[ELSHIKHM]

That was Epic now i can put the lamp in the box and enjoy "Darkness"

[sachinsahu]

Wow nice it is 100% working now i made it thanks broo

[joshuaaustin]

i like this kind of vids. VERY DETAILED

[zeeshanrahatsultan]

The ldr is reciving the light its just like if you place a battery over a speaker and as the speaker wire touches the battery terminals so it pops in or out causing continous vibration

[manoelnilo]

muito bom fiz um pra mim parabens otimo video.

[michaeljohnn]

Good job well done..Thank you..i hope if you could do LDR with solar panel & Recharge battery

[randomthingch]

Hey bud, i want to make this but i have another light dependent resistor the model is LDR Gl5516 can i use it, please reply

[HiFimanu]

Couldn't be simpler.
I'd use a variable resister aka pot to adjust sensitivity.

[SunilKumar-vdhf]

Very Nice Yr Kantt projects
I am sunil

[melancholyme]

Wow! This is awesome.
Tqsm ill make one...

[loscordero]

MUCHAS GRACIAS Y SALUDOS NAVIDEÑOS DESDE DOMINICANA

[Noidiy]

Very good, similar to what I do. But I'm using different transistors.