How to Make a Simple LED Circuit (Interactive)

[@sheabrogdon9544]

Ive been going through beginner LED tutorials, and while I wish you would have put a smidge more info about the ohm calculation (like just a quick pic of the formula), this is still the best tutorial I've seen about how to do it. A lot of other vids expect you to know about all this extra stuff they stick in the video. Until watching this, I didn't know what a breadboard was, but a lot of other tutorials expect you to know about things like that, even though they're supposed to be educational info for absolute beginners. Anyways, solid video!

[@saldav420]

I usually solder the resistor to the positive side, can you explain why you do it on the ground? Am I doing it wrong?

[@TheIrishAce]

Typically you're correct it should be on the Anode(Positive Side/Longest Leg). But technically it doesn't matter what side the resistor is on as the same amount of energy will go through the LED. Think of the circuit as a belt or chain, if you slow down the chain at any given point it slows down all the other links connected to it also. IE: resistor on Anode or Cathode it doesn't matter. Hope that helps.

[@meghana_manugula]

@@TheIrishAce oooo wowww very helpful sir....

[@stephanzoes8010]

@@TheIrishAce Wait but Resistors are supposed to make it so that not as much electrons pass through the LED right so if you put it on the negative side it would make sense because it would make it so that the LED wouldn't overheat due to the amount of electrons. But if you put it on the positive side, wouldn't the amount of electrons burn out the LED since you put it on another side?

[@oxygen454]

@@stephanzoes8010 the electrons are slowed down and that's all is needed. It's like slowing down traffic, it doesn't matter if it's before the light or after, the flow will be slow.

[@pockoclock228]

Shouldn't the resistor be on the positive line prior to the LED? That LED is taking all 5 volts rather than the 3 intended and the resistance is after the fact, making little difference to the LED.

[@helendonaldson631]

This is great. I'm making circuits for dolls house stuff plus mending solar lights. Really clear. Got my leads, solder, etc now to do it! Thank you

[@martinscopes3914]

I no electronics.your video is the best straight forward explained video iv seen .nice one for beginners

[@GavinJulius]

I prefer using the term "Ground" instead of "Negative". The reason for this is that you often have Red-Black-Red on the secondary side of a transformer, making it (-12V)-(0V)-(+12V) as an example.

[@beinganonymous2119]

Could you please explain it further mate? I'm interested to learn

[@maxwarfield6699]

You explained everything calmly, that's major for someone like me, who's just started to learn about electricity - thank you for that. But, I heard that electricity actually travels from the negative to the positive [say, in a regular C battery] that would mean, that the resistor you installed is indeed in the right spot. Yet you claim, that whether the resistor is before or after the LED, makes no difference. Is that because you are using is alternating-current? Please let me know, and kudos for this video. Cheers!

[@emilbgd9520]

No,there is nothing different in AC

[@laseanegeorge6834]

My daughter needs this video for school and she got an A+ in Science

[@gaolbreak1090]

Just what I needed! Thank you so, so much!

[@ta-tahuang4904]

I am a biochemistry major and I love your videos! thank you for making them

[@_Giorgio_]

Thanks for the vid! Explained good enough that a first-timer like me (never created a circuit before) had no problem crating this.

[@juliusomega2969]

I thought current travel from positive to negative. why would you put the resistor on the black wire? the resistor purpose not been used.

[@Jackson-mp7di]

Yeh can someone explain this.

[@cristinayoung4486]

Electron flow is from negative to positive. When people first discovered electricity they erroneously believed electricity flowed from positive to negative but this proved to be incorrect, but the nomenclature had already been established.

[@piggiesgosqueal8066]

Watch this: kzbin.info/www/bejne/f6u8YaqrrdlkiJo But some explanation: - There are TWO types of flow: 1. Electron Current Flow (Flows from negative to positive). And electrons require a closed circuit to flow. 2. Conventional Current Flow (Flows from positive to negative). This is charged carriers (explained in the link above). Electricity is generated when these two types of flows are flowing at the same time in opposite directions because they interact with each other, THAT is what causes electricity. And because circuits are a loop, it doesn't matter which direction you use AS LONG AS you remain consistent throughout your entire circuit by having everything flow in one direction. Hope this helps.

[@Jackson-mp7di]

Thanks. Good explanations

[@elitebeyblade]

@@Jackson-mp7di ues

[@desharrington09]

Hello I just watched your video and was wondering if you were to do this on a larger scale, say 20 LEDS how do you determine the voltage?

[@jerryjudy7949]

How to find the answer

[@fey879]

You have to Loading...

[@madmac66]

@Marc Jagger fuck off spaz

[@UnfunnyMayonaise]

I have a question.. how to know the voltage of a led or a cable.. and why he attached the resistor the the negative cable... I am a begginer trying to understand this 😅

[@stevegrinley6809]

Good vid. I thought the resistor had to be on the positive side??

[@mircoheitmann]

"not true. As long as the resistor is in circuit it will serve its purpose. Think about how the electrons flow. They will always go through the resistor, so whichever side the resistor is on, the electrons will flow through it. Hopefully you understand a little better." -Simply Electronics

[@zabava1111]

this is a dc current circuit that comes in an adapter that converts from ac to dc and when checking with a multimeter, there will always be one wire to be plus a second minus and the current goes one direction and this direction is not determined by the resistor.

[@Sergeant_Camacho]

Great video. Do you have a video about how to connect a LED/resistor to a toggle switch?

[@somethinginsertedhere5612]

I don't have a resistance thingy but it works any way, should I use this light or no?

[@emilbgd9520]

The life of the LED will be significantly shorter

[@tinkmarshino]

wait shouldn't you be trying to find the right resistor and taking the voltage and the amps of the usb cord? to find the ohms/resistor?

[@elitebeyblade]

Can we do it without a resistor?

[@mpoadmin2978]

this concept is so golden

[@samrebert6410]

Hello sir i hope u can help me im doin a project that ill b usein up to 40 leds and ik ill need a resistor for them the led im usein is amber and the frw volts are 2 and 20 mA and i want to use 7.2 volts could u tell me what resistor should i use for the leds plzzz i have asked others and all they keep doin is givein me a crazy math prob and to b honest i dont understand it i thank you for your time

[@worldender1235]

Thanks dude i watched this to see what i need for my new soldering iron

[@bobhatcher5505]

Great for us to teach our Grandson's, thanks!

[@ChristopherClaudioSkierka]

...hi forgot to also say...you did not mention power(Watt) rating of the LED , does it not matter in this case?

[@carlitoway9120]

Why did you have to get rid of 2 amps? Also how did you get rid of 2 amps ? I know it was .013 miliamps Hod did you adapt miliamps to your setup to get rid off 2 volts ⚡

[@bonsiatreesseedsandplantsf4812]

What resistor has red /green please? thanks just subscribed

[@muhammadrafiqulislamkhan6994]

My question ia why you use resister negative side? can we use resister positive side? Thank you.

[@SimplyElectronicsOfficial]

Either side, it doesn't matter.

[@croll_uk]

@@SimplyElectronicsOfficial Great answer, but why? Logic would tell me to place the resistor before the current reaches the LED.

[@SimplyElectronicsOfficial]

@@croll_uk think of it like it's water flowing through a pipe. If I put a kink anywhere along that pipe the flow of water slows down through the whole pipe, it can't travel at high speed before it gets to the kink and slow speed afterwards, thats not how physics works. So it doesn't matter if the resistor is before or after any component, it restricts the flow across the whole circuit.

[@croll_uk]

@@SimplyElectronicsOfficial That makes it more clear to me. Thanks for clarifying :D

[@lukepricey1]

Instead of the LED, could I solder on a small length of EL Wire??

[@peterneverette933]

Can it be powered with a battery, or a small closed loop type of power source (if that's the right term)..? By connecting the positive and negative to the corresponding ends of the battery? Asking for a friend.

[@risnandianggara]

how about i use the terminal power source directly but with more resistants and could you give me a circuit pic

[@toasterbath1395]

Risnandi Anggara lol

[@sethttuce]

Harvey Leyland WTF STOP 🛑

[@risnandianggara]

@@sethttuce just wondering

[@risnandianggara]

@@sethttuce i mean how i could make the circuit board so i could directly plug it to the 220v power source

[@toasterbath1395]

Alexroblox ! What stop what you idiot

[@thomasjewson6577]

if you were to use the other end of the usb charger cable (like the android charger bit) do you think you would be able to power the LED by plugging it into a phone?

[@SimplyElectronicsOfficial]

You can, but be careful with this. Your phone may not regulate the current draw. it depends on the phone to be honest. Just be weary of destroying anything expensive.

[@dpyp]

Needs OTG

[@emilbgd9520]

You need to have an otg connector. To do this u should short 2 pins of the connector(it has 5 pins). I don't know which ones , you can watch on yt

[@paulgoodier3777]

Why don't you solder resistor to positive side?

[@MFP2241]

Yes I'm questioning that myself: resistor to negative should not provide a dimmed LED in my experience. I guess proof of that is actually here, since at the end that green LED "has lit quite brightly" just as if normally.

[@soheilasiadate2478]

Thank you for the teaching very helpful

[@doncodman913]

I loved that you said the resistor is getting rid of the voltage you dont want . That will stay with me !! regards Don

[@elektron2kim666]

It's a time stretcher for weak equipment.

[@plucky2115]

For somebody that is just learning about this, is confusing to understand if the electricity flows in one direction why is the resistor after the led and not before. I am new in this, for me it doesnt make sense but it looks that just works and thats it.

[@shahraizayoub4369]

you are A genius man

[@UnfunnyMayonaise]

I have a question..why did we attach the resistor to the negative cable?

[@youandme9630]

can I use tape instead of soldering

[@transdata3035]

Thanks for the demonstration and clearly explained.

[@darcam]

thanks for the vid, my question is does the resistor have to be placed on the negative side and how did you figure the proper resistor for the LED ? and how do you figure the proper voltage and amps for the LED

[@SimplyElectronicsOfficial]

A resistor can be placed anywhere in a series circuit and it will still impede the flow of current the same way. If you have a water pipe with a valve that you can partially close, the water would slow down just the same if it was on one end of the pipe, or the other, right? Same with the resistor. Negative or positive side is your choice.

[@SimplyElectronicsOfficial]

The LEDs Current rating is specified from the source I purchased it from, They are generally approx 20mA for the 5mm LEDs, although it can vary depending on the colour. Voltage for an LED is approx 3V. Although again for diferent colours the voltage does defer a few hundred millivolts. I have a video for calculating resistance, check it out.

[@darcam]

ok but if have a bunch of LED's but no literature. is there a way to figure out the voltage and amps with frying them?

[@zabava1111]

this is a dc current circuit that comes in an adapter that converts from ac to dc and when checking with a multimeter, there will always be one wire to be plus a second minus and the current goes one direction and this direction is not determined by the resistor.

[@addamaniac]

I like the idea of someone with a breadboard but NO soldering iron :)

[@jiggah21st]

Hi, can I apply this using a lithium battery (18650)? I'm planning to use it as an power on light indicator.

[@risnandianggara]

how about the LED is more than 1 or two but its 20 or more ? how the sircuit ?

[@SimplyElectronicsOfficial]

Take a look at my How to use a breadboard video. I use 3 LEDs in that example, replicate the same circuit for as many LEDs as you like.

[@risnandianggara]

so you just replicate it not calculate it because i want to use about 50 LED's and powered by hanphone charger

[@SimplyElectronicsOfficial]

Well, you should calculate your resistor values. But I'm using 5 volts in this circuit. so You should be able to use the same resistor values.

[@risnandianggara]

ya 5volt handphone charger ...!! what about capacitors?

[@SimplyElectronicsOfficial]

you don't need capacitors in this circuit.

[@merseytrainz]

Keep up the Good Work!!! Thanks

[@SimplyElectronicsOfficial]

Thank You :) I'm still working on improving the video recording set-up. needs more light and possibly a better angle. But improvement will come with time.

[@ryancaballero5108]

what if you add more LED... do we need to change the resistance?

[@johnwillowconcha4400]

if i add more led on 5volts power, does the resistor change also?

[@tsinmalayalam9761]

Which resistor is used

[@gaz1tinsley]

Hi, how would i wire a parallel power supply to link leds upto a car speaker ? I tried wiring the leds to the speaker power supply, but very little output from the leds and was told i need a parallel power supply for the leds ?

[@rubenmote2545]

Why do you add the resistor if the LED can light up without it..?

[@chrisgallagher85]

Great Video! Bravo.

[@dreamtounite3139]

Hi mate, do I need a specific kind of USB wire... for example 30V or something? Let me know I'm just trying to refresh my memory

[@sammydors9542]

how if i will use 7 LED lights, what should the value of my capacitor and cord be?

[@Md.HasiburRahmanTahsin]

How was your resistor ohms that was used?

[@roushan232kumar5]

Mohammad Hasibur Rahman

[@salmabassiony5998]

I know this is a 3 years old video but I’ll bet on you answering First things first why did you use the resistor on the negative side? True the connection is now parallel but you could’ve connected it to the positive side. Second things second how can i make something like that but with a small battery instead(basically gonna use it in a pen)

[@ProckerDark]

no difference in adding the resistor to the positive or negative side, it won't make any difference, the resistor is in series with the LED in both cases

[@ShadowGaming-vi8sk]

how did you get that small LED light?

[@erotick100]

instead of an led can i use an incandescent like the bulbs you'd get off of a string of christmas lights???

[@Zakethehero]

Just wondering, why do you need the resistor? If you touch the LED to a battery, it works just fine. What does it add? Sorry, I'm a total noob at this stuff!

[@oxygen454]

LED lights normally only like 3 volts or 2.7v depending on the color or style etc.. This is being powered by a 5vdc USB plug. Plugging the LED straight to 5v will make them very bright and drastically shorten their life span.

[@sankurathrisrisaimahesh1299]

Will the led first effected by voltage. Because u connected resistance to negative terminal..as we used to pass 1.8 to 3.3 volts to led..but in this..u pass 5v to led and 3 volts to resistance. No sense I think..

[@u2mister17]

Red and black for DC. Black and Red are Hot in AC. Am I wrong?

[@SimplyElectronicsOfficial]

I live in the UK so unsure of wiring colour codes for AC circuits in other countries. In the UK, Brown is Live, Blue is Neutral, Green/yellow is earth ground.

[@kellyw1648]

Wow, you must have a magic soldering iron. LOL

[@ashleybaby8749]

Do I NEED to use the resister???

[@kulanchandrasekaran4462]

Ashley Butler Yes, ALWAYS use a resistor with LEDs. Because they have no way of limiting their own current once the forward break over voltage is exceeded.

[@FlightSim2703]

YES... This is it, you haven't explained it all on your first video :) you missed include "Resistor" and the "wire colors" abut connection to lead LED striping Thanks and thumbs up.

[@perth45]

But, you plugged it into what?....you can't just put a plug on it and plug it in, so what powered it?.....

[@dm3ris]

Phone charger, powed bank etc.. The power Source 5V and depending on how much leds you use, The amperage. If your power Source can give 5V 1A, for One led its more than enough, but thats allright. 5v 1A could run abaut 4leds i think

[@king_james_official]

he told at the start it's a 5v charger, so a phone charger would do

[@TIPSDN]

Good idea❤

[@Lil_eee]

What happens if u don't use that resistor

[@probang2866]

No heat shrinking isolation at the LED?

[@SimplyElectronicsOfficial]

I did make a point to mention heatshrink but did not use this as I really am trying to keep things as simple and basic as possible. There are future plans for a video on isolation. Thanks for your feedback and concern though, it is nice to have some constructive feedback. True community spirit :)

[@sathishkumarsivapatham2803]

How much value of resistor need to design this?

[@bertiepimplebum9715]

How Do I Do This? I purchase a key ring LED Light. These work fine without a resistor. They have two, CR2016 Button Batteries, (3V) inside them. I want to add a 10CM extension wire to this key ring LED and put the bulb on the end of the wire. REASON FOR THIS: I repin Euro Cylinder locks. I need to have a tiny light inside the Euro Cylinder whilst I repin the lock. I don't have three hands. It takes two hands to repin the lock. If I had this extension wire LED, I could stick it on top of the lock with the bulb inside the lock. BUT ... Q) How Do I Do It? There's no wires inside the key ring LED. The LED touches the batteries top and bottom. These key ring LED's cost £3.80 for ten on Amazon UK.

[@elektron2kim666]

The resistor circumvent a short lived blitz and a sour smell and give more time to the LED.

[@car4rk958]

So I did this with a 4 volt power supply because that was the lowest I had. The led lit up and died in 1 second. The light was still there, just very very faint. I have to say, when you put too much power in the led, it smells terrible. Cool circuit though, Im going to try again later with 3 volts instead of 4

[@zhouxiadong3673]

can you please make a circumcision tutorial video please

[@jacintoalfaro7157]

how many diode can you connect to that setup?

[@kamysamaa]

2 divided by 150 equals 13mA???...very confusing!! You first look into the datasheet of the LED and see the current consumption... usually about 20mA. You have a 5 V input , the LED needs 20 mA...you choose a 250 ohm resistor and that's that! 2 divided by 150 equals 13 mA!...how did you come up with that?...and no one asks!!

[@tearex7023]

5v / 20 mA = 250 And you need a 100 ohm resistor if the LED is 3v, because 5v - 3v = 2v / 20 mA = 100 ohms Just type ohms law calculator into google

[@SleepyMangos]

No offense your confusing even more lol

[@legoman3713]

Very nice

[@ceceliajeanserge134]

If it is possible to connect 12 v LED to 9 v battery. Just to make a simple torch my son is 13 yrs he wanted to do please help

[@danger32100]

I need to connect a led to 110v,, how

[@peteranthony4660]

Very nice for new friends

[@sportscricket1775]

if i want to use in 220v,then??

[@tyngshainnongsiej5410]

Thank you so much sir

[@SHADOW-bg4mm]

hmm how do i put it in my 24v system.. im sure there's a video somewhere?

[@georgimiller3355]

why join the black wire to the resister? what if you joined the red wire?

[@SimplyElectronicsOfficial]

+Georgi Miller Doesn't matter. It's in series. Could be either wire

[@SimplyElectronicsOfficial]

+Simply Electronics as long as polarity to the led is correct of course

[@shashankjarmale9597]

What size gauge wire do people typically use when making circuits, for pretty basic projects, has to handle up to 25V and up to around 3 amps?

[@SimplyElectronicsOfficial]

If you want to purchase wire, and know what current it should handle, pretty much all wire will have it's current rating labelled as standard. So go with wire rated above the current you intend to put through it. So 5a wire will be fine.

[@39oldschool]

good video thanks for the info will try

[@MaxDoesFitness]

Can you get these LED lights in a store? Or do you simply have to buy them online?

[@mandalsunita9]

Any hardware store

[@becauseisayso2597]

what does these lights are called ?

[@mandalsunita9]

5mm leds

[@electronicwithaman8629]

You want to make a short video about this because it is not required a 10 min time

[@PoisonGunpla]

very helpful, thank you..

[@ShadyDuck_s]

I actually have right here i have a light like your but execpt i have a battery.i conected the + and - in the place they need to be and i got light.

[@mikeoxlong7607]

I did this but with 4 led bulb, the problem is it's working but with very very dim light only

[@MFP2241]

Isn't that green LED "quite bright" actually because resistor was joined to negative lead instead of positive?... I mean, sure current will flow no matter where you attach the resistor, but dim light effect won't be achieved with resistance through the negative lead. At least that's my personal experience on motorcycle lighting in the past. Ever since I concluded, mostly by intuition at first instance, that resistor must be joined to positive if I wanted a less brighter LED.

[@Allin7days]

Connect a LED to USB cable and get 1/2 million views on KZbin. lol

[@Recicladorcreando]

Jajaja 😁

[@parveenbegum8724]

What is the value of resistor?

[@MisterSamShearon]

150

[@christisrisen6774]

I bought a 900$ Voltron and his eyes are led and they no longer work I was looking around for something like this to maybe do some type of repair but not much luck I'm afraid. The best I have come up with are CR 11 Fishing batteries and bulb which are very tiny I put one in the slot behind the eyes.

[@yesyes2543]

Please help my dad gave me a fancy kit with electric stuff what do I do

[@coffeebreath350]

Very useful, thanks!

[@dimsidios9283]

wanna make a costume utilizing a mix of LED strips and circuits to make it light up, still have no clue on how to do it.

[@arjankomdeur1134]

Dimsidios maybe a little bit late, but use ws2812B led strips, and get a arduino nano if you want to use it for costumes. Then search on youtube for "Arduino fastled tutorial ws2812b", and then you should be able to just copy the code and wire it following the video.

[@sydney6787]

@@arjankomdeur1134 I want to use a little light from those string fairy lights to make the and of my prop sonic screwdriver light up... any ideaa

[@flavouredflight8628]

superb brother

[@naderhumood]

Thanks.......it's .intructive

[@derekriggs7659]

you get an LED and stick a 1.5 volt battery between the terminals. bingo, a simpler LED circuit.

[@haydenbroczkowski8790]

Not true

[@_Giorgio_]

If you get right voltage led it's possible and functional...

[@ExtraFreakyBobTv]

In trying this with my Xbox one and some stuff I found from random devices I took apart... wish me luck RE: I was nervous to plug it in at first but when I did it it worked!