555 Timer With LED

[Saviour86]

Why do you need the second capacitor? the one who exits from 5 to ground

[deebsboy]

Great video. Thanks!

[vladalexandru85]

Bravos,,take care and Rock On!!! :))

[vladalexandru85]

Bravos,,take care and Rock On!!! :))

[1kuhny]

do a vid on 556 timer i just got one and know that it is two combined but it harder than it seems

[thecanuckman16]

Thanks! Great job.

[DJPaulgee1]

I notice you shown the pin arrangements from 1 to 4 and 5 to 8 respectively, but you forgot to mention that the chip has a notch cut out at the top to indicate it's orientation on the board. Otherwise this is a great video. Thought i'd just let you know.

[KD7SJTCM98gk]

I am really impressed that a nice young lady has such a great interest in Electronics. I have my associates degree in Electronics Engineering and am currently working towards my Bachelors degree in the same field. There are two ladies in my class of 16. I hope you pursue a career in Electronics so that you can help inspire more young ladies to enjoy the same thing I love, Electronics! Great Job! keep up the awesome work. I can't wait to see all of your vids.

[randy95060]

This worked great! It is the fourth instructional video I've used for the blinking LED and yours is the first that led me thru successfully. Congratulations on an excellent teaching ability. Plus you show plenty of enthusiasm.

Randy

[marc1979Guitare]

potentiometer can vary from 100 kohms to which one?

thank yoU!

[C00PProductions]

What if u use a 3 volt battery? Can someone or the author make a video or tell me what to do? I'm thinking u replace the resistors with a regular wire.

[deebsboy]

@C00PProductions I'm fairly certain that the 555 requires 4.5V to 18V to operate correctly.

[joekerofdarkness]

Does anyone know if you can hook up more than one LED to this?

[loling53]

lol: "aannnddd have a good day!" Oh ya, there's an easyer circute on my chanal

[fredkeppler]

great video- I am looking for a schematic to build a random timer with 6 seperate LEDs.  I want lights to flash randomly in intervals ranging from about 1 second to 10 seconds. This will be used to test reaction time in a hockey training devise.

Any asistance would be appreciated. I will pay for design services.

[SurvivalGrounds]

amazing.. thanks for sharing this, your blog is well done too! I'm just starting out and out of about 100+ videos I've watched this is the most newbie friendly.

[browneyedham]

decently done. however, the diagram is super grainy, and how the potentiometer is connected is not covered during the diagram discussion in the beginning. so ... still not sure how to do it.

[KesherMedia]

Wow, very well done.

Excellent video! :-)

[dynamicaster]

thank you

[DaveO1310]

Nice job, thanks!

[addison1977]

Such critics, maybe these experts could post links to their own 'perfect' videos?. I think it was a great video by a kid for kids, it would have certainly made me want to run down to my local electronics store and get my hands dirty

[glenniesamoyoa26]

this is great !! going to watch this in web movie tube

[mafasmunaseer]

good i want to tay like this

i am not a electisiyan

[TheLukey21]

is ground minus

[janagyjr1978]

I think it's a good tut, but light on the explanations (and I disliked mostly because you didn't even mention a current limiting resistor on the LED, big no-no as you'll burn up the LED with Vcc).

[fellaz4sho]

GREAT JOB I WAS JOTTING EVERYTHING YOU WERE INSTRUCTING DOWN BUT I WOULD PRETTY MUCH APPRECIATE IT IF YOU CAN YOU PLEASE EMAIL. ME THE SCHEMATIC PLEASE TO PLUP247@HOTMAIL.COM. THANKS

[tomek123kotek]

why not use the simpler version of the blinker which uses the schmitt trigger not gate that you can easily make out of a 555 timer

[TheBetterPeter]

What if i use 5V instead of 9V as a power source?

[janagyjr1978]

@TheBetterPeter The 555 timer can typically be powered from 3.8V to around 18V (depending on if it's bipolar or CMOS).

[tehseenb10]

@TheBetterPeter

Its ok.... they work on TTL logics..

[TheBetterPeter]

thank you!

[youwinz2010]

hello my friend nice tutorial hmmp, i think it can help me doing that kind of simple circuit..^^,

[tomek123kotek]

your 555 timer led flasher is uselessly complicated i can make a flasher with much less componentsand it only uses pins 2, 6, ,3 and of course 1 and 8 but the led is hooked up to the 6 volt so basically the 555 grounds the led

[AmazGraz]

@tomek123kotek But it is about LEARNING.

[Jimi409]

@tomek123kotek So, where is your vid?

[nery3515]

I made one of those when I was 12 years old.

[Micr0Druid]

Awesome!

[fuelban]

Very informative, and well presented, you took time to explain well Too, which is important to dummies like me who don’t understand electronics “AT All”…LOL… Thanks good video.

Thom in Scotland.

[eah987654]

Im a girl and I enjoy electronics! My partner has an electronics workshop and he teaches me, More girls are getting into electronics these days its great! 

[terae77]

Thank you so, so, soooo much. I have just finished my homework, having understood it completely.

Regards from México.

[anglianchannel]

how can i build a 555 that when activated by 12 v dc will produce three 1 second bursts of power then shut down till retriggered?

[krishan57]

good... excellent... 

[shidoink]

good video, im going to try to incorperate this for a rapid fire mod for an xbox-360 controller, so basically i need a pulse of electricity, which i assume this does right? to my knowledge the trigger works by opening and closing with some sort of relay that im going to bypass and instead pulse with this project anyone know if that will work?

[JetMechMA]

Great video. I would like to refresh my electronics training and you have a good style. Just a few tips....try not to block the view of the project during recording and sometimes your speech speeds up where we can't understand exactly what you said, like: "CR4news". You may have done this project numerous times, but it's the first time for us the viewers. Perhaps if you read from a script, it might sound and look more professional. Thanks again.

[alexhwarang5]

you sound like you have been up for a week

[zker666]

No offense, but in your next video with anything doing with electrical circuits, try adding enthusiasm! The human mind today gets bored easily, and with a little bit of enthusiasm, you can grab your viewer's attention! Great video btw.

[AmazGraz]

@zker666 By and large electronics types are as dull as it gets. This no doubt is because their brain is tied up in the complexities of eletronics. And their audience ususally is a circuit. So she is doing quite well considering.

[PSPGlover]

thank you

[lawnside82]

wow that was cool! 555 timers are awesome!

[alexhwarang5]

hi polukj

i give total support to your point!

[goldeneffect]

Great video.

check out my new project using a 555 timer.

[goldeneffect]

Great video.

check out my new project using a 555 timer.

[goldeneffect]

Great video.

check out my new project using a 555 timer.

[omega3677]

cr4new, Nice video really helps me understand more about the 555. I was wondering can you please tell me how do I figure out the values of the parts I need to make a 555 pulse timer capable of 50K pulses per minute? I am making a pulse motor for a project I am working on. Thanks

[polukj]

@omega3677 Use the following formulas:

Frequency = 1.44/{([R1]+2[R2])C}

%High = [(R1+R2)/(R1+2R2)]*100

You want %High to be as close to 50% as possible. Pick C based upon a capacitor value that you have readily available.

[laphant]

nicely done...like Rosalind FRanklin ..or Martha Chase...cheers nicely done...

[etchwriter]

I agree. I think that having women in the electronic/engineering field is a good idea. They can see what a lot of people might miss because of their attention to detail.

:)

[michael10725]

Kinda cool... Thanks

[GarrettStrobel]

Hello, excellent video so far, one of the most instructional I have found on youtube for 555 timer. I only get lost at the last part where you say to connect pin two to pin six I really cant get a clear read on how you set that up on the soderless breadboard. Did you just go straight around the back of the timer? Can i just go over the timer itself from pin2 to pin6?

[polukj]

@GarrettStrobel

The short answer is that you can go over the timer itself from pin 2 to pin 6. I just find that it looks neater when you go around. Also, if you burn up the chip, it will make it harder to remove/replace the chip if there is a wire running over it.

[MsYuy]

THANK U SO MUUCCHH!

[sujeshanto]

thanks machi !

[supersanchez1991]

wow man is so strange the switch was off and the battery drain so bad. the switch is hook up, one wire to the positive lead of the led and the other wire to negative lead of the led. why that happen

[polukj]

Here is my suggestion for adding a switch to your circuit. Take the positive lead (the lead that goes to the + terminal of the battery) and then plug it into an unused row in the breadboard. Attach the switch so that one pin connects to the same row that the positive lead is and another pin in an adjacent row that is not connected to anything else. In the adjacent row, connect a wire leading from there to the row/column you use to provide power to the board. Let me know if you understood this.

[supersanchez1991]

for the switch, i try putting it on the negative lead but it did not work, so i put on wire in the negative and the other one on the positive. and it work.

[supersanchez1991]

iif i want to add a switch to turn off and on where would i put it? thank you nice vid

[seasonedtoker]

on the ground lead

[supersanchez1991]

ground lead?

[seasonedtoker]

anywhere on the black/negative wire that gives power to your board or the piece of the circuit you want to trigger with a switch.

[supersanchez1991]

ok thank you for the info. and i am sorry for been a little stupid, but i have another question. i am making a word with LEDs, the word is LIZ it has 33 LEDs and i am using a 9v battery so i put a resistor of 12 ohms but after the LEDs been on for about 10 seconds, the resistor gets hot. you think i should put a higher resistor? and thank you once again for your help.

[polukj]

The reason why your resistor is getting hot is because there is too much power. Do you know what the power rating of the resistor is (Watts is the unit of measure)? You can use an LED of higher wattage (using 1/4 watt? try 1/2 watt, etc.).

Generally, I use a resistor of 330 ohms when working with LEDs. If your LEDs are really really bright, I would suggest using a higher resistance.

[polukj]

I meant a resistor of a higher wattage.

[supersanchez1991]

thanks for the help.

[YoLninYo]

I love the fact that young women are getting into electronics more and more! it will give nice role models for young girls and it won't be something only "boys" do ...

[robert0joe]

@YoLninYo I'm young and I love electronics. I'm 13.

[sunooii]

@YoLninYo when was it only things that boys do?

[bertilsanja]

not smart to switch komponents when power is connnected..

[ronmexico09]

could i get the schematic?

[jeld09]

hi jess

would like to now if i could get a copy of the schematic .

also can this be used on a multi color led and can it be used on a 12volt power supply.

get video!!!!!!

[KaossPadGuitars]

can i have the schematic? i cant read that :(

[transistorbaluba]

your camera is of focus. :-( nice video thou!