Source Code: create.arduino.cc/editor/mertarduinotech/40f2d22f-7853-4882-b2a9-1b6d43ac81b0/preview Recommended Items: Use Your Muscles in Project - amzn.to/3wdL45C 37 Sensor & Module Packages - amzn.to/3m66WeQ Try this Robot Arm - amzn.to/3fq8DCl Best Resin 3D Printer - amzn.to/39tY8KB Arduino Compatible Kits - bit.ly/2J2AFF7 Banggood Spring Sale - bit.ly/3slMbOn
Sorry to be off topic but does any of you know a method to get back into an Instagram account? I was dumb forgot my password. I love any tips you can offer me.
@Edison Anthony i really appreciate your reply. I found the site through google and I'm in the hacking process atm. Seems to take a while so I will reply here later when my account password hopefully is recovered.
For those like me who have had trouble making this work, this might be because your LDR is calibrated differently from the one in the video. To fix this issue, try replacing the "300" with other values until it works.
Muito show... Explicou em 4 minutos um conteúdo grande com riqueza de detalhes... O Brasil estaria em outro nível se a maioria dos professores tivessem esse dom na didática.
Great video, if your light sensor is still not working. Try changing your ‘ if ‘ statement. As 300 is working here it doesn’t always work for everyone. Mine was 5
source code= //set pin numbers //const won't change const int ledPin = 13; //the number of the LED pin const int ldrPin = A0; //the number of the LDR pin
void setup() { Serial.begin(9600); pinMode(ledPin, OUTPUT); //initialize the LED pin as an output pinMode(ldrPin, INPUT); //initialize the LDR pin as an input } void loop() { int ldrStatus = analogRead(ldrPin); //read the status of the LDR value //check if the LDR status is
hello, i have a question regarding the resistance value. why 10kohm and 220ohm is chosen instead of others value? is there a reason for these? if yes, are they any formula to prove so? looking forward for your reply.
I have watched EVERY SINGLE photoresistor & arduino video on RUclips up through the first 30 results. Not only have I not found a SINGLE video that explains the need for the fixed resistor (what they are calling a "voltage divider," but at least one person in every video asks that question in the comments section and never gets an answer. I am extremely frustrated because I cannot find this information ANYWHERE. Why can't you just connect one leg of the photoresistor to +5V and the other leg to A0 and measure the output voltage (and therefore light level) directly?
dude resistors don't change voltage, they change the current and with the fact that LDR is a resistor, you can't do that. that is why you will need a voltage divider circuit
Thank you very much for this project. Could you put a video that when the ldr does not detect light, and the sound detection detects sound, then the led lights up. But if the ldr detects light, and the sound detection sensor detects sound, then the led does not light up.
Why did you choose 300 for working rate of LDR? Tell some info about the working principle on Arduino codes? why did you plug a cable in A0 pin? Say sth. about the LDR and Resistor section over board.
Its a great and helpful tutorial, thank you! but what if I want to add 13 more 4.5 lumens of LEDs to the construction to make it brighter? Do you mind helping me how the construction is going to be like? For eg. how many more resistors do I need to add and what are the values for each resistor? Your help and response would be more appreciated!
is there any diffrence btw programming an arduino uno & Leronardo !cuz i wanna try the same thing but with the leanardo arduino ! & why do we need an arduino to do this in the first place .. ?
I followed your exact sketch and cross checked the connections. I can't find out the problem. When I check the serial monitor, all I see are senseless symbols. Please help
Hi. I just found about this amazing video po of yours. Can I ask po why is it 300? The reason I ask is, the first time I run the program using ldr, the monitor prints.. 1023.. what is the difference between putting 300 and 1023 in the condition? sorry for the disturbance sir.
uh, I think i made something wrong but, I have no idea what it is. Pls help (I'm trying to control two LEDs at the same time) //set pin numbers //constant won't change const int ledPin = 13;//the number of the LED pin const int ledPin_2 = 10; // the number of the second LED pin const int ldrPin = A0; //the number of the LDR pin void setup () { Serial.begin (9600); pinMode (ledpin, OUTPUT); //initialize the LED pin as an output pinMode (ledPin_2, OUTPUT); //initialize the second LED as an output pinMode (ldrpin, INPUT); //initialize the LDR pin as an input } void loop (){ int ldrStatus = analogRead (ldrPin); //read the status of the LDR value //check if the LDR status is
We tried and the LED did not light up but gave the line Serial.println. Then I changed the ldr status to 1023 and the LED stayed on. Any thoughts as to why?
Question: I noticed the rate at which the serial port was displaying the output was pretty quick. Can this rate of reading the LDR values be increased with a higher baud rate?
I don't think so. But why would you want it to display quicker than that? The reading doesn't need to be any where near that fast for a working project anyway. I will be building this to control the lights around my building every day, and it will read the light levels just once per minute, and only turn the lights on if the light level has been below the threshold for the last five or ten minutes. Likewise with turning the lights off.
It'll probably have some kind of trouble determining if it's dark or light, so then every little light beacon will trigger the LDR. Try to do this in a lighter space.
The LDR sends values to arduino from 0 to 1023, being 0 a state of complete darkness and 1023 the maximum brightness. Therefore anything below 300 is considered dark enough in this case, but you can set the range higher or lower. If you want to see in the serial monitor the values that the LDR is registering you can add this line to the code: Serial.println(ldrStatus);
Source Code: create.arduino.cc/editor/mertarduinotech/40f2d22f-7853-4882-b2a9-1b6d43ac81b0/preview
Recommended Items:
Use Your Muscles in Project - amzn.to/3wdL45C
37 Sensor & Module Packages - amzn.to/3m66WeQ
Try this Robot Arm - amzn.to/3fq8DCl
Best Resin 3D Printer - amzn.to/39tY8KB
Arduino Compatible Kits - bit.ly/2J2AFF7
Banggood Spring Sale - bit.ly/3slMbOn
Sorry to be off topic but does any of you know a method to get back into an Instagram account?
I was dumb forgot my password. I love any tips you can offer me.
@Chris Jude Instablaster ;)
@Edison Anthony i really appreciate your reply. I found the site through google and I'm in the hacking process atm.
Seems to take a while so I will reply here later when my account password hopefully is recovered.
@Edison Anthony it worked and I now got access to my account again. Im so happy:D
Thank you so much you saved my account !
@Chris Jude happy to help :D
For those like me who have had trouble making this work, this might be because your LDR is calibrated differently from the one in the video. To fix this issue, try replacing the "300" with other values until it works.
had to adjust my ldr status to
thank you! it works! had to adjust to
I've been doing a project in design school that needs this exact circuit and I haven't been able to figure it out! Thank you so much!!
Muito show... Explicou em 4 minutos um conteúdo grande com riqueza de detalhes...
O Brasil estaria em outro nível se a maioria dos professores tivessem esse dom na didática.
The instructions and steps are organized and clear.
The video quality is perfect.
Thanks very much for sharing your knowledge with us.
For those that are having troubles due to constant readings, try going to a brighter environment or try to lower the LDR status, eg, LDR status
The best ldr tutorial that will ever be
Great video, if your light sensor is still not working. Try changing your ‘ if ‘ statement. As 300 is working here it doesn’t always work for everyone. Mine was 5
clear guide on writing code. Comments in code section helped a lot.
Would you mind explaining why we have to use 10k ohm resister with the LDR.
You are my hero, i can sleep this night, ty bro
You can now sleep you dont have an led shining in ur eye
Sir I am big fan of all of your projects kindly make GPS land leveling with arduino...
this is the right way to make LDR photoresistors.
Attach wires to short legs!
source code=
//set pin numbers
//const won't change
const int ledPin = 13; //the number of the LED pin
const int ldrPin = A0; //the number of the LDR pin
void setup() {
Serial.begin(9600);
pinMode(ledPin, OUTPUT); //initialize the LED pin as an output
pinMode(ldrPin, INPUT); //initialize the LDR pin as an input
}
void loop() {
int ldrStatus = analogRead(ldrPin); //read the status of the LDR value
//check if the LDR status is
Thanks
Helped me in my college engineering course!!! Thank you
thank you, thats the solution for my projeckt
The code is so simple. That is help me to understand how it work!
1:27 the resistor is between the lrd and the wires and in 3:58 the resistor is after the ldr. Why?
I wish I was the arduino console you were typing to
agreed!
Hi, why do we need the 10k resistor?
hello, i have a question regarding the resistance value.
why 10kohm and 220ohm is chosen instead of others value?
is there a reason for these? if yes, are they any formula to prove so?
looking forward for your reply.
Ohm's law. The resistor for the led controls the current and is there to kerp the led operating within it's operational parameters.
bro u hve very cool videos suoerb videos just make yourself audible to make it extra cool
you are awesome.can you connect the led strip with this method?
For this how to connect PIR sensor
I have watched EVERY SINGLE photoresistor & arduino video on RUclips up through the first 30 results. Not only have I not found a SINGLE video that explains the need for the fixed resistor (what they are calling a "voltage divider," but at least one person in every video asks that question in the comments section and never gets an answer. I am extremely frustrated because I cannot find this information ANYWHERE. Why can't you just connect one leg of the photoresistor to +5V and the other leg to A0 and measure the output voltage (and therefore light level) directly?
dude resistors don't change voltage, they change the current and with the fact that LDR is a resistor, you can't do that. that is why you will need a voltage divider circuit
I made a video on this. you can go and check it and please subscribe
@@hesamakbari4314 can you please share a link
@@aditydud yes sure
@@aditydud but unfortunately I deleted the video but I'm going to repost it in 2 days
why does the led keep blinking?
And to use 2 LEDs? Each one with its sensor? How would the scheme look? Thank you very much in advance!
And to turn off LED when it's dark and turn on when have light, what i need to do?
i think you should add buzzer to it
Thank you very much for this project. Could you put a video that when the ldr does not detect light, and the sound detection detects sound, then the led lights up. But if the ldr detects light,
and the sound detection sensor detects sound, then the led does not light up.
Could you please make a video of how to make the LED turn on when there is light and turn it off when the LDR detects darkness?
Lol switch the of statement
Why did you choose 300 for working rate of LDR?
Tell some info about the working principle on Arduino codes?
why did you plug a cable in A0 pin?
Say sth. about the LDR and Resistor section over board.
Could You add schematic of connections.
Awesome, it worked!!!
If i could understand what I'm writing down, that would be awesome. :D
what is LDR
My LDR status just keeps returning 0. Would be from my wiring?
my ldr have black lines but all the world have ldr with red lines
Its a great and helpful tutorial, thank you! but what if I want to add 13 more 4.5 lumens of LEDs to the construction to make it brighter? Do you mind helping me how the construction is going to be like? For eg. how many more resistors do I need to add and what are the values for each resistor? Your help and response would be more appreciated!
It dosen't work for me
LDRStatus is the voltage or resistance of LDR?? kindly help me
is there any diffrence btw programming an arduino uno & Leronardo !cuz i wanna try the same thing but with the leanardo arduino ! & why do we need an arduino to do this in the first place .. ?
I followed your exact sketch and cross checked the connections. I can't find out the problem. When I check the serial monitor, all I see are senseless symbols. Please help
why we use 10k resistor on ldr?
I have copied the whole program carefully but contunuesley error is coming that 'AO was not decleared in this scope' please reply me out and help me
Hi. What if I attach about 8 LEDs? I don't know how to program it anymore. Can you help me with it?
Ithınk You are the best youtuber
Please provide schematic in Fritzing, it would be so nice.
my led is always off for some reason. do you know why?
sometimes its Always off but i fixed it by removing all components and reassembling them , then re upload the code
Same but a bit glown
Nice project 👽👍
Does it also works if I use an Arduino Leonardo instead of Arduino UNO?
thanks for this it worked like a charm
Which video making software do you use
why my led is always on even it its not dark? answer m pls
wilbert ortilla try changing from 300 to 100.Mine worked.
increase the analog Voltage in code. it is
Otg
@@tryhardsomethingelse2658 mine is not glowing darker even i changed 300 to 100
how to fade rgb led with ldr not on and off just fade?
What do I add to the code if I want it to blink while not being covered?
Hi. I just found about this amazing video po of yours. Can I ask po why is it 300? The reason I ask is, the first time I run the program using ldr, the monitor prints.. 1023.. what is the difference between putting 300 and 1023 in the condition? sorry for the disturbance sir.
Can we put 100 k resister
will it explode if a use 330 r instead?
How can i combine this with a button? i already have an if function but when the button is pressed then the ldr does not work... thanks
Please give circuit diagram
I have an ldr sensor board, can I still do this?
LDR means
Swaraj Projects light dependant resistor
uh, I think i made something wrong but, I have no idea what it is. Pls help (I'm trying to control two LEDs at the same time)
//set pin numbers
//constant won't change
const int ledPin = 13;//the number of the LED pin
const int ledPin_2 = 10; // the number of the second LED pin
const int ldrPin = A0; //the number of the LDR pin
void setup () {
Serial.begin (9600);
pinMode (ledpin, OUTPUT); //initialize the LED pin as an output
pinMode (ledPin_2, OUTPUT); //initialize the second LED as an output
pinMode (ldrpin, INPUT); //initialize the LDR pin as an input
}
void loop (){
int ldrStatus = analogRead (ldrPin); //read the status of the LDR value
//check if the LDR status is
Can I put a transformer one end and a 2.9 billions ohm resistor with a 2 hydra jumper cables.... some of these comments are awesome
what's the meaning of the 300?
the meaning of the three hundred is the value of light that the LDR needs to turn led on, if u want it to be more sensitive u just decrease the values
Selam hocam elinize sağlık çok güzel ancak birde bunun tersini yapmanız mümkünmü aceba işıgi görünce yanacak karanlıkta sönecek
Can we use 470 and 1k ohm resistors instead of the ones mentioned
Yea sure why not
can it work with switch case
in my case it is on all time help
nice video. thanks for the tutorial
Can anyone tell my why there has to be a resistor after the photoresistor and the wire to ground? Cant the power just go into analog in?
Hi, is it possible to dim an RBG LED with a photoresistor on Arduino?
thanks
We tried and the LED did not light up but gave the line Serial.println. Then I changed the ldr status to 1023 and the LED stayed on. Any thoughts as to why?
Same question of serial.println
Question: I noticed the rate at which the serial port was displaying the output was pretty quick. Can this rate of reading the LDR values be increased with a higher baud rate?
I don't think so. But why would you want it to display quicker than that? The reading doesn't need to be any where near that fast for a working project anyway.
I will be building this to control the lights around my building every day, and it will read the light levels just once per minute, and only turn the lights on if the light level has been below the threshold for the last five or ten minutes. Likewise with turning the lights off.
Tienes la simulación en proteus, o la placas?
Sorry, what does ldrstatus
Sir can we light 2 LEDs?
If yes then the connection should be series or parallel?
Mine worked in parallel
From where all these components can be purchased ,.
Banggood
Followed the same steps, but led is always on even when I've focused a torch to the ldr. Please help Mert
Same happened to me.maybe your code has a fault."
how can I do to turn on more led's?
MUCHAS GRACIAS ME SALVASTE EL PI
did anyone tried to combine this with solar tracker?
I'm new to arduino. Does analogRead(ldrPin) read the voltage or the current?
analog pins divide 5 into 1024. and according to the input voltage ,it shows you some results(numbers).
BEST VIDEO👍👍👍
Creative video, thanks for sharing :)
my LED keeps turning on and off ? what is the problem
It'll probably have some kind of trouble determining if it's dark or light, so then every little light beacon will trigger the LDR. Try to do this in a lighter space.
Can I do this without a breadboard?
Do it whit bread
My led got very dim ...plz help
what's the purpose of 10k resistor?
its apart of the voltage divider circuit
what is logic behind (ldr status
The LDR sends values to arduino from 0 to 1023, being 0 a state of complete darkness and 1023 the maximum brightness. Therefore anything below 300 is considered dark enough in this case, but you can set the range higher or lower. If you want to see in the serial monitor the values that the LDR is registering you can add this line to the code:
Serial.println(ldrStatus);
//Here's the Code:
const int ledPin = 13;
const int ldrPin = A0;
void setup() {
Serial.begin(9600);
pinMode(ledPin, OUTPUT);
pinMode(ldrPin, INPUT);
}
void loop() {
int ldrStatus = analogRead(ldrPin);
if (ldrStatus
@@victor7777 Thanks being able to see the value solved my problem as well. found that different ldr register different readings!
@@victor7777 thank you soo much man
Sorry but its not working for some reason I tried different project before this but still can't do it bruh 😐😐
Good tutorial and I find this music very enjoyable :-)
Can i use 221k and 11k Resistors... Rply fast
Loooooooool
can you upload the programing
any one can answer me? may LED still working even though its not dark
Thanks mate, really helpful
How to upload these values on webserver or webpage automatically every 15 or 30 seconds??
why are you using the resistors???????
They can destroy arduino
my LED was off when it's dark, but on when it's not dark,
weird :/
connect the 5v to LDR not the gnd. and connect the the gnd to the other resistor
this video was really helpful!!!!