I had a MOFSET IRF520 in my Arduino starter kit. Tried it and it worked. It will not work with BC547 transistor. I wasted some time with other TH-cam videos that were fake and did not work. Thanks for your great video.
Thanka for reply. As per this circut which led you recmend? I am new one in this field with less knowldge. Plz guide me for good back up. I have 12 volt with 6 batteries lethium battery with 3s bms
I have one, which is not switched off but only dimmed. But if I closed it near the bulb, it's totally switched off. Can I increase or decrease (100k) resistor? Or what can I do? You used 100 k resistor, isn't it?
experiment with different values. you should increase the value to 220k or 330k . if it doesn't work try to decrease the value use 47k or 33k or 10k instead of 100k.
Actually like this, , I have followed the example in your video, I have also prepared the materials, such as resistors, irfz44n, and LDR sensors, led, but the end result is not like yours, if I LDR it doesn't work a bit, even though I gave it the light is strong, the light doesn't want to turn off, it's still on but dim,
@@sm_electronics for an under bed lighting that lights up at night everytime someone gets down from the bed and turns off automatically after they get back into bed...
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I had a MOFSET IRF520 in my Arduino starter kit. Tried it and it worked. It will not work with BC547 transistor. I wasted some time with other TH-cam videos that were fake and did not work. Thanks for your great video.
thanks...
Super idea!
Nice roject brothers👍🔔🙏 2:37
thanks...
Tried it. Working fine for over 1yr now!
thanks 🥰🥰🥰🥰
Does the wattage rating of the resistor need to match the load of LED’s in this circuit?
no
how can i revers it... ... i want light on when is light an d light out when is dark
change the position of ldr and 100k
I have a 3w 12v led cob. Then how much resistors to use?
Use low resistance 2.2 ohm or 1 ohm for safety.
Good idea i will try...i have one question plz. Is it sensitive like in the dark only its work and also what is the battery consumption?
It is enough sensitive.
the battery consumption is depends on the number of LEDs you are driving.
Be Happy 😊😊😊
Thanka for reply. As per this circut which led you recmend? I am new one in this field with less knowldge. Plz guide me for good back up. I have 12 volt with 6 batteries lethium battery with 3s bms
use available 12v led
220 v supply?@@sm_electronics
no
What is the maximum ampere load can be connected?
49 Amps.
Hi sir for the battery 12v is it need to use alkaline battery?
any type of battery can be used. lead acid, lithium or alkaline battery can be used.
It's same resistor for 4 v circuit?
Yes
thank you. it works. but i want full bright with 4 volt circuit. what should i do ?
It should give full brightness at 4v. If not reduce 100k.
@@sm_electronics same circuit doesn't work with 4 volt. then should i remove the 100k resistance? you mean using without any resistance?
Use 10k to 22k instead of 100k.
What volt led are you using?
@@sm_electronics 4 volt 5 watt
@@sm_electronics i used 10 k. but still not working
Sir irf44n ke dusra MOSFET le sakte hai please reply 55nf06 le sakte hai
yes
Yes,you can use
Did u connect with 12 v dc battery??
Yes
I have one, which is not switched off but only dimmed. But if I closed it near the bulb, it's totally switched off. Can I increase or decrease (100k) resistor? Or what can I do? You used 100 k resistor, isn't it?
experiment with different values.
you should increase the value to 220k or 330k . if it doesn't work try to decrease the value use 47k or 33k or 10k instead of 100k.
@@sm_electronics thank you, I changed with 150 k. I will test it tomorrow
@@sm_electronics I think, if I add 100k (
pre-set) variable resistor, will be fine
let me know...
@@sm_electronics I will test it tomorrow
how should i do in order to connect the circuit to the switchboard instead of directly to the light i want to control?
th-cam.com/video/ZTjpCx4Tis4/w-d-xo.html
@@sm_electronics but its a 12V switchboard, on a sailboat, are the components still compatible or shoud something be different?
Como você faria um sistema onde na presença da luz o sistema iria funcionar?
Perfect
thanks
thanks
if I supply 12v energy, then I only use 3 12v LEDs, how many reresistors should I use, thank you please answer me...
If you use 12v led no resistor is needed.
@@sm_electronics so i don't use resistor also it's ok?
Actually like this, , I have followed the example in your video, I have also prepared the materials, such as resistors, irfz44n, and LDR sensors, led, but the end result is not like yours, if I LDR it doesn't work a bit, even though I gave it the light is strong, the light doesn't want to turn off, it's still on but dim,
So the LED light is not 100% off even though it has been given strong light
Ldr is getting reflected light.cover the ldr
Sir lekin led bulb 5 ya 10 minutes salne par hi bohot jyada heat hota hey kyu sir...
led per 2.2ohm 1w resistance lagao.
Can i use p60nf06 instead irfz44n mosfet?
yes
Thanks bro may God give you more and get successful in future.
can you put video of 12v solar power recharjable light diagram
I Will try...
Good
Thanks
Whit 5v led and 5v battery is the same?
Yes you can use
Hi,bhai kya mai is circuit ke sath aik 5w 5ohm ka resister laga sakta hoon? us se light hot nahi hogi answer me please I'm very worried about that
yes bhai . very good idea
OMG THANK YOU SO MUCH BRO
Or Kya mai 1/2w 100k ohm resister ki jagah 1/4w 100ohm resister laga Sakta hoon?
10k se jyada value lagao
Sir ckt diagram 🤔
Its working yaaa just now trail complete
advance version
th-cam.com/video/4jFYQVw5QWI/w-d-xo.html
Kindly make one 3.7 volts circuit for 2 leds 5mm
th-cam.com/video/V_n34wkONtk/w-d-xo.html
Can it work with 9V battery?
yes...
Rezinstans 1m super no problem
how calculate resistor value for 24v input please
Use 220k
Your resister 1m ohms ???
100k
brown black yellow
It's working...
welcome 😃
How can i add a pir motion sensor to this circuit...?
for what?
@@sm_electronics for an under bed lighting that lights up at night everytime someone gets down from the bed and turns off automatically after they get back into bed...
@@ethicalhacker1 search pir motion sensor project on TH-cam
Ont good 😢😢
inverse, the lamp is bright while sun raises
change the position of 100k and ldr
@@sm_electronics the light is of
give more light
Mey ne banaya hai lekin Bohot jyada rashni Ldr par parne se hi light off hoti kam rashni mey nhi kyu...?
100K ki value jyada karo. 200k or 330k or 470k lagao. problem hua to comment karna.
@@sm_electronics okk thank you mey try karta hu okk thanks sir
Ho gaya sir thank you very much 😊😊 keep it up sir
thank you for for helping me
Sir lekin led bulb 5 ya 10 minutes salne par hi bohot jyada heat hota hey kyu sir...
@@yuzupiku2010 resistor lagao
Can i use bc547? For 12v strip?
no, very low current.
Which one can I use?
use any mosfet
Not a specific one?becoz I don't have the one that u used
search the mosfet name in Google
How long LED strip can this circuit handle...?
IRFZ44N is a N-channel MOSFET with a high drain current of 49A,so very long strip.
@@sm_electronics what size is the LDR...?
Any size
@@sm_electronics.
So the resistance of the LDR doesn't have any relevance, is that correct..?🙂
No.it forms the voltage divider.
Ye tej jalegi aur ye 4 volt par kaam karga
Yes...
@@sm_electronics ty so much sir
mạch cảm biến ánh sáng bằng năng lượng mặt trời 👍👍👏🏳️🌈
Nice but irritating music
thanks for pointing out...
Hi brother circuit kaha milege ❤😢
video thumbnail
@@sm_electronics link dalo bhaiya ❤
It's working 😂😂😂😂😂
nice...
Not working
check the connection.
Want to connect it with a solar panel to charge the battery then send a message
how old are you?
Thks r there any changes
I am 50yrs
Sir not working
It is a working circuit.
Bol bol Dua edin Hintlilere onlarin sayesinde bir seyler ögreniyorsunuz
thanks...
Feak😅
This is fake
It is not. It is a very simple project.