How to wire up and use LEDs (explained for beginners)
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- เผยแพร่เมื่อ 24 ต.ค. 2021
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#led #electronics
im just 9 years old btw but im motivated for these
Ah! For a moment I was that young boy, playing with batteries and lamps ...yes I had no LEDs , they existed only in the lab. I would learn ohms law early on, in school I would find the proper shop class, I knew it by the satellite which hung over the teachers desk, built by high school seniors it boasted all they had learned. I smile thinking of what might be built into it today.... then it has been 60 plus years. From ohms law to circuit analysis, old man Bennett taught us well. Yes we could repair that radio or TV, we constructed telsa coils, and experimented with high frequency and voltage. Well I reminisce far afield , but thanks for the memories. Years latter I would share Bennett's teachings, giving several a step up, on their way to becoming engineers , closing the circle. Take care.
I am trying to learn this. I want to add LEDs to my action figures & models. But for some reason, this gives me a ridiculous amount of anxiety. I don't know why but it does.
Hello, thank you for the explanation on how to calculate the resistor needed when you want to connect an LED, I don't know much about electronics, I only do small DIY jobs on low voltage and I admit that I always have trouble knowing what resistor I should put for each LED, I'm keeping this video in my dedicated playlist because I know that by tomorrow I'll have forgotten how it's calculated and being able to find it again will allow me to come back to it in the future and find this calculation again, which will prevent me from burning out LEDs because I didn't put a resistor in. 👍😉
WOW!! I GET IT!!
Great demo and presentation!!
I have been searching and Googling all week on 'How to light a simple basic
LED' as a beginner.
I have seen numerous 'attempts' on TH-cam as far as explaining the fundamentals.
Most presenters would flaunt their technical 'expertise' with no idea of who their
audience is on the other side of the screen.
Kudos and continued success.
Mike Y.
Chicagoland
Wow, you gives very simple calculation to wire up led in quad, wing , before this we burn many led due to wrong register value calculation. Thanks....
Great video! I was looking for some help on how to hook up the leds for my fpv drone! Your videos are a huge help for me, I honestly don't know where I would be without your videos, everytime I have a question, or am unsure about something on my quad, your videos always come to the rescue! I built my first racing quad (infact my first quad ever that I built) and it flies a dream! I couldn't have done it without your videos to help me, I probably would have fried my fc by now without them😂. Happy flying!
AWESOME video, Thanks for sharing! I've been struggling with this when I do lighting projects. I've suffered LOTS of blown LED's from not knowing how to properly calculate the right resistors!
Excellent video, thank you, its clear and well explained, electronics perplex me at times but this has helped me a great deal for my project!
Awesome! Great explanation/demonstration! Thank you so much!
Fantastic video Lee! I really enjoyed it. It is a good refresher to learn this stuff again. Electronics is so fun to mess with. Thanks for showing us this.
Extraordinarily clear. I am now a genius. Much thanks, and happy flying.
that's filled a gap in my knowledge cheers Lee stay safe.
Excellent tutorial, enjoyed it.
Excellent information and very well explained. I will try to use this video to teach my boys some common knowledge of life and electronics. 👍👍😎✌👊
thank you sir very well explained!!!!! I am new to this kind of stuff it is very interesting.
Very good video and I like that you go into explaining why instead of just telling us how if that makes sense lol
Great video thanks Lee cheers🙏
Nicely done video 👍🏻
Amazing job
Excellent video 😍🙏👍
Forget about the resistor - it’s a red herring.
The concept you need to focus on is Kirchhoff’s current law and Kirchhoff’s voltage law.
In simpler terms:
When two components are in series, the currents through them are the same, while the voltages across them add up.
When two components are in parallel, the voltages across them are the same, while the currents through them add up.
And the reason behind the above general laws is to do with the physics of electricity, i.e. that current is flow of charge per unit time, while voltage is potential energy per unit charge.
Ohms law will keep you on track.
Do you think you could make a video on what value of a resistor do I need to mod a standard size RC servo to move more than its standard deflection?
Application: To see if we could use a cheap and cheerful standard size servo or a 9gm servo for FPV to get more panning.
Absolutely loved this video, great going.
Thanks.
It wouldn't work like that. The rotation is a servo is measured internally using a variable resistor mounted to the output shaft... happy birthday
Really helpful for an absolute beginner (Yup that's me!)
thnx for sharing
great video. hope you can make e 2 way ON and OFF switch for lipo please
Not sure what you mean - can you elaborate?
Hi! Thanks for the video. I’m trying to add some lights to a diorama. I’d like to run a total of 4 3-6v LEDS (all have internal resistors) and 3.7v motion sensor. I have a 6v battery pack. Will they all run? Looking at your content I’m assuming they will but maybe not as brightly as they should?
I'd test them with two in series and see how that works first. If they are too dim then connect all of them in parrallel... Best of luck
Mahalo for the amazing explanation. I wonder if you can tell me if I can do something kind of similar. On my pc motherboard there is pins to connect a led to indicate that the pc is powered on, I was hoping to learn how to connect multiple leds to the motherboard pin?
It depends on how those connections on the motherboard are setup and the voltage and current they provide. If it is more than about 3V, then you will need a resistor as shown. It is is around 5v, I'd wire a couple of LEDs in parallel and if it is something like 12v, then you can have a couple of LEDs in series..
is that make sense to use voltage divider on led wiring
Great video thanks! 👍🏻 Any chance you can do something similar with COB & Cree LEDs ?
If you want COB then check out the MenaceRC COB LED products - very easy and safe to use in the hobby. Else you can use the same maths used in the video for a COB LED. You need to find the current and voltage it needs and you can use the same method! Best of luck
@@Painless360 Thanks again 😊 I’ve been playing around with them lately - fantastic, cheap too!
I have some circular COBs - super bright. They’re about 1 inch diameter and wafer thin, about 1.7mm 😳
The Cree LEDs are also impressive but with both, I’ve blown a couple lol.
Been scratching my head about unmarked voltages & whether they need resistors etc 👍🏻
The ones that I've seen run on something like 3.1v and need 300-700mA (0.3 - 0.7 Amps) so you need to fined the specs of the ones you have and you can figure out the resistance value. Watch for the smaller resisters getting warm. As you need them to dissipate more power they need to have a higher watt rating..
@@Painless360 okay thanks 👍🏻👍🏻👍🏻👍🏻
Hi painless 360 I have a question about Inav. Can I use Inav with Spektrum transmitters and receivers?
Yes, you can. Most modem flight controllers need to SBUS input though so you will need a reciever that has that.. Best of luck
Is it not best practice to use a resistor on each LED in parrell to prevent circuit failure if one LED fails.
That isn't needed, wiring LEDs in series is a very standard way that efficiently uses the current and LEDs last for a very long time.. Happy flying!
That would be a good idea in a safety-critical application, but waste too much power in most applications.
I see that the red and blue LEDs seem a little too bright and can’t see the colour.
What could be done to improve it?
I’m curious cos Iv recently got bk into RC cars and im going to be showing my son (10) how it’s done. Tia
Using a resistor with a higher value will cause the led to be dimmer.. Happy flying
What direction do you put the resistor on?
Doesn't matter.. happy flying
@@Painless360 thank you for your helpful videos
Will a 9v battery power 7 led’s and what size resistor please
What's would your guess be after watching the video?
I cold not grasp how the 1st led seems to get hit with the total voltage first, say 3 led's, only way I can understand that is that because it's series they all act as one, one bucket that fills evenly at once
It doesn't work like that. It is a little counter intuitive, I admit! Happy flying!
So if I have a 1.5 v battery I wouldn't need a resistor do I?
Many who don't understand how to do this use button cells to power leds directly without issue.. Happy flying
sure but the LED will not turn on
hi what aboyt 3 flashing led red blue yellow i series? the same formula
Yes but watch out for flashing LEDs, using them in series can make some odd things happen.. Best of luck!
Hi . Ok I had to actually get the old old school books out ! The video is really good.
Nice! I just put Switchable LED's on the back of my EDF powered AR 900 Wing 😎🤙 Video of maiden is up on my page
Are their any orange ones.
You can get them in pretty much any colour. I use flickering orange leds in some of my hone made Halloween decorations... Happy flying
@@Painless360 I'm building a tall pumpkin man for Halloween and I'm looking for cool orange lights.
Ok, now I need resistors... I have three different size LED lights, I have several AA Battey packs, extra low voltage parallel 22AWG wire, two diffrent types of small switches. Ok, now track down the resistors. Hold my non Anhauserbush beer.
Buy the led light with the resistors already attached! So much easier.
I want to put one of these led lights in a paper building. Do I have to worry about fire?
I realized that the more LEDs you connect in a circuit, the lower the brightness of the first 2 LEDs on that last example. Is it because of the voltage of the battery and how much energy is being "filtered from the resistor?
You need to calculate the right resistor value for the LEDs you have in series... best of luck!
In the beginning of electronics it was thought the flow was positive to negative (Thus the backward shape of the diode symbol on a schematic). As electronics progressed it was discovered electrons actually flow from negative to positive. Shouldn't the voltage modifier (usually a filtered circuit) be before the load on the negative side instead of at the end of the logical circuit?
The convention for current in diagrams and design is from positive to negative. Don't let the actual electron flow confuse you.. Happy flying
The resistor can be on either side - it's independent of current direction. And since electons are negative, charge still moves positive to negative. If you give someone debt, the flow of money of from them to you!
Hey Lee, I commented a few minutes earlier... But the comment disappeared. 😕
No idea where it went.. I've not seen it. Happy flying!
(edited) Dumb thing, but, I noticed that for these LEDS there’s a pattern to the resistor amount. You’ll need to know what resistor number for a single LED tho
SO
1 LED - 360
2 LED - 270
3 LED - 180
4 LED - 90
5 LED - no resistor
They’re all a multiple of 9/90. For every new light, go backwards in the 9/90’s times table and you’ll get your resistor
Nice idea but what supply voltage does that 'rule of thumb' work on?
Heavily edited, sorry
@@Painless360
The 9 volt battery from the video. It’s only based on what I saw here. I don’t know much, Imma update my comment to be an observation instead of rule.
The thought only applies to these specific LEDS and their configurations. I don’t have enough experience yet to make a legit rule of thumb…
The volt supply made me think though, since it’s a 9 volt, you need 360, (haven’t done math yet, it’s a theory) if you wanted to do a 12 volt battery, a single bulb would need 480(I THINK???)? *If* that’s the case, you’d go backwards by 12/120. My hypothesis is: x=volt battery. x*40=resistor for 1. For multiple bulbs: y: amount of bulbs *AFTER* THE FIRST BULB. (X*40)-[y*(x*40)]=new resistor number. Meaning:
1-480
2-360
3-240, etc
The maths needed is pretty easy trying to avoid that basic maths may cause some to miss the essential point (that it is related to the voltage supply being used) and get into trouble... Happy flying!
To many numbers 🥴
Welcome to the world of electronics where maths is a requirement.. Happy flying
Too