How to Make a Dark Sensor using LDR
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- Опубликовано: 28 сен 2024
- DIY : Learn How to make a dark sensor using LDR (Light Dependent Resistor) and Operational amplifier (op-amp LM358). This circuit can be use in street light. Low light automatically trigger the output high.
LDR is a light-controlled variable resistor. The resistance of a photo-resistor decreases with increasing incident light intensity.
Download Circuit diagram- bit.ly/1TMRG3q
Component Used-
1. Op-amp LM358 IC
2. LDR Sensor
3. 1k ohm and 10k ohm Resistor
4. LED
5. Buzzer
6. 9v battery
7. Breadboard
8. Single Core jumper Wire.
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i start falling in love with electronics.....wow
+Thabo Sithole wow.. That's a good news
can you give me the link of the theoretical concept of this project. for oral defense . Thanks
Bahut badiya project sir
Sir ye software ka kya name he
For outdoor lamp. Is this good for light lamp self and lighning ? If no do you have any solution. This is why the question because I will make best for any condition.
Can you please explain the technical working of the circuit?
He uses the opamp as a simple comparator in open loop configuration. So, when the non-inverting input of the Opamp is slightly higher than the reference voltage at the inverting input, the output will go high driving the led and the buzzer. For the non-inverting input to be higher than the ref. input it means that the LDR resistance has gone higher and that means its darker. So when its getting dark (adjustable by the little trim pot) the output goes high and lights up the led. Only drawback here: the Opamps output can max. drive about 20 mA - so just enough for the little led. If you need more current, just put a transistors base at the output of the opamp and use it as an amplifier or better as a switch here in common emitter config that means put the emitter to ground and the load (led, buzzer) between collector and Vcc.
@@richardnanis Can you explain again?
@@kyordannydelvalle523 What is the part you dont understand? I think i was quite clear, pls. read the datasheet of the Opamp to understand who it works. Come back if you still have questions. I cant find my old answer in this conversation and dont know exactly what i wrote...
Hello Tapendr,
i'm impressed with your projects or i can say you inspired me a lot but can you tell which software you have used in this video for breadboard circuiting?
+Mr. Kashyap Amesara thank you..I used fritzing software.
i did same work like you did in video but dont know why led and buzzer is working when light is open or not.
+Muhammad Shoaib tune the sensitivity via variable resistor.
Can u please tell me which software You'r using .....????
Sir ur using which software in initial work
Could you please provide the working principle of this project?
What is that blue colour small thing please say me the name of the thing please reply me I m not getting that thing
please inform me in what value we put the variable resister???????
+Zyd hussain 10k variable resistor
Sir, can u explain how the circuit works?
Can you make it without breadboard?
which software ur using... plss tell
Kaushik DIY's its called proteus 8
what applications use it ?
You can make an automatic lighting system for your home...its will automatically turn on lights in night and off while day time
Hello, may I ask what the use of the buzzer is
Buzzer is for sound notifications..
can you give me the link of the project details?
+MD: Shahidur Rahman sorry cant give you all components buying link but you can find everything on eBay or Amazon.. and don't forgot to see the description
i tried it but the variable resistor is not adjusting
hi..which engineering u did ..pls explain.. i alsdo want to do
electronics engineering
Tapendra Mandal e&c???
+Netra Patil yes
Still favourite in 2018. Thanks
how to make light on when light falls on it... I want its reverse...
+Shubham verma simply swipe the connection of pin 2 and 3
which pins
2 and 3
Tapendra Mandal sorry I didn't understand which pins transistor
+Shubham verma in this ic pin 2 and 3 is input...just disconnect the connection of 2 and 3....then swipe those connection.
??? please What is the name of the program he used
+Marwan .V fritzing
:) Tapendra Mandal Thank you so much
can i use ic 555
+Datu saud you can use 555 timer ic,but your whole circuit will be changed..
Sir plz upload more videos
what apps that you use?
fritzing
please i need that software.. can you tell me.. please
+VINOTH KUMAR download the zip file which is available in the description... inside zip file contain a notpad file where u will find the downloading links
give valus of componant
led 3 volt, 1&10 k ohm resistor,ldr,battery9 volt ,bipolar timer NE555,bread board,buzzer,variable resistor 10 k ohm
its not working... help me
+athul vk prefer circuit diagram and check the components
Its not working
oh sorry by mistake I asked you I thought it was parrot whisperer
wow.. what is that sowftwear...?
Can I use lm741
yes
Finally working 😮💨
replay me
@tapendra mandal can you please give me the working in written just the hint like where we have to connect the collector pin , pins of resistors and terminals of battery....i just need urgent help for my project....please please just give me the clues at least....you can only help me out as i understood your video because you made a neat circuit
I will be really grateful to you if you help me out......
Hi Bro, the size of ldr?
suppose i am taken 5mm Ldr in this above project(i.e.dark sensor using ldr). so couldn't work why?
parrot whisperer please tell me why my budgie is scared of me when I try to touch it on his head but my budgie is tamed and he also sit on my finger but when I try to touch him he scrare
I am so going to make this. Thanks dude.
+Elexie Munyeneh good luck buddy
can you please tell me the name of the components used
+Kunal Singh check the description
Tapendra Mandal
can I get ur email ID ..I tried bt it's not working
+Kunal Singh tapendramandal@gmail.com
You didn't mention the 10K variable resistor in the materials in the description.Please add it.Thanks a lot! Hope this works!
He still didn't add and that's why I ordered incorrectly.
your project is the best among all the projects i have seen on youtube
but could u please give me the steps in detail as i have to wite them for my physics school project plsss
Thank you sir
Thank you so much. After 10 attempts, I finally made it right. Thanks.
Bro can you explain the problem you faced
HELLO LIKE THE PROGRAM THAT USES TO SIMULATE THE CIRCUITS
Thank you... it's fritzing
ok fine thanks
Can we use it on 12v DC
no