Using the 555 Timer

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Күн бұрын

Learn how to use the classic 555 timer and build some simple projects with it.
Article with hookup diagrams: dronebotworkshop.com/555-timer
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Today we are looking at one of the most famous and useful integrated circuits ever produced - the 555 timer IC. Although this tiny device is over 50 years old it is still in use today, and for many applications, it is a better choice than using a microcontroller.
I’ll explain how the 555 works and how to use it in its three different modes - Astable, Monostable, and Bistable.
We’ll then build some simple, but useful, projects using the 555 timer, including a light chaser and a DC motor controller. They are easy to build and, unlike a microcontroller, don’t require any programming.
In fact, there are a lot of situations where the 555 is a better choice than a microcontroller, especially when you consider how inexpensive and easy to use it is.
Here is the Table of Contents for today's video:
00:00 - Introduction
01:40 - 555 Timer Operation
10:28 - Astable Mode
15:09 - Monostable Mode
19:14 - Bistable Mode
23:12 - Light Chaser
28:15 - Latching Switch
30:39 - DC Motor Controller
34:36 - Touch Switch
37:20 - Servo Motor Tester
40:03 - Conclusion
If you’ve already used a 555 then you’re probably aware just how versatile it is. If you’ve never used one, then hopefully this video and article will inspire you to build a few projects with it. Hope you enjoy it!

Пікірлер: 590

@Dronebotworkshop 4 ай бұрын

Hi everyone - It's come to my attention that there has been someone masquerading as myself, responding to some comments here with a link to a Telegram chat to win a prize from me. THIS IS A SCAM, I am not holding a contest, nor do I have a Telegram account. PLEASE DO NOT RESPOND TO THESE MESSAGES!! It's happening on a lot of my videos, I'm taking steps to remove them manually, but as I have 162 videos, it will take some time. If you do run across a suspicious comment, I would appreciate you letting me know at info@dronebotworkshop.com. Thanks! Bill (The real one!)

@feezyadz5940 3 ай бұрын

Hi sir, thanks a lot for this amazing video. i didn't quite catch the working principle of the latching switch circuit. i am also trying to simulate it but no luck. any more explaination would be great or even the reel. thanks a lot

@jimdean7335 2 жыл бұрын

Awesome. I sure wish you’d have done this back in 75 when I first learned the 555. I still have a book from back in the day that I refer to from time to time. You have an effective style of teaching, keep up the good work.

@diggee172 2 жыл бұрын

I totally agree. My sentiments exactly. 🤣. This is great. Young people today are so blessed to have teachers like this, the internet and KZfaq. I’m learning so much.

@alcroc 2 жыл бұрын

Well said Jim, the book just confused the hell out of me. Gonna get me a 555! lol.

@rdhunkins 2 жыл бұрын

@@diggee172 Yep, these whippersnappers got it so easy! (Now get off my lawn!)😉

@oldmech619 2 жыл бұрын

It was always a 555 in my projects back in the early 70s. Very versatile

@raylularoussef247dasilva6 2 жыл бұрын

@@alcroc p

@SirMo 3 ай бұрын

I'm teaching my nephew about electronics. So I'm building some very basic circuits with him, to get him familiar with different components and some very basic theory. But a 555 project with some blinking LEDs is what really got him excited about electronics. Everyone should have some 555s in their electronics draw. Such simple yet versatile little components. This video came in really handy on reminding me of how to use the chip. Great explanation!

@sinjhguddu4974 2 жыл бұрын

I have not come across a 555 timer illustration this beautifully done. Thank you Sir, for the time and hard work put in.

@citizengkar7824 Жыл бұрын

The best 555 timer tutorial I have seen. As usual, you have encapsulated the essentials, of the tested component, with your direct, concise, & precise instructional methodology. Thanks.

@namlow 2 жыл бұрын

Working on it while first introduced over 50 years ago. Did not work on digital electronics/ICs since 1979. What a refreshing memory from your video! Thx!

@joerinaldi5 2 жыл бұрын

I studied Logic gates and 555 timers back in 1986 glad to see there is still someone teaching the basic electronic building blocks.

@Dronebotworkshop 2 жыл бұрын

One thing I forgot to mention in the video, but did mention in the article, is the units used in the formulas for calculating the time with the resistors and capacitors: Time is in Seconds Resistance is in Ohms Capacitance is in Farads

@ThomasAndersonbsf 2 жыл бұрын

flashback to Forest M Mimms III engineering booklets sold at radioshack LOL

@cnc-maker 2 жыл бұрын

Your bistable mode schematic is incorrect. You have both switches going to Vcc, when they should be going to ground.

@ThomasAndersonbsf 2 жыл бұрын

would have been nice to touch on the frequency differences between the types as I have seen most are 500kHz while LMC I believe are capable of 3mHz high end range.

@tnamen1307 2 жыл бұрын

Sir... Can I used 555 Timer for a car to automatically lock all doors when speed reaches 40 kmph? Please kindly make video for this auto door locked circuit. Thanks in advance.

@shaylehirschman1748 Жыл бұрын

@@tnamen1307 Would you consider doing your design in a PLD or FPGA, or even a microcontroller, which can come on an off-the-shelf board that you program? Then you use an oscillator for the clock. The 555 and assorted logic chips could be used for fun, instead, but you’ll have a better platform and still be simple to program if you use a microcontroller or FPGA.

@anonymous.youtuber 2 жыл бұрын

That’s a very nice walk through memory lane, I used the 555 40 years ago to build a voltage controlled 50 kV power supply.

@nigelman9506 Жыл бұрын

Your explanations and graphical illustrations are 100% easy to understand, the best I've seen so far, well done

@YLprime Жыл бұрын

This is a REAL tutorial, none of that 12 mins joke, thank u!

@octogames6823 2 жыл бұрын

This was a great intro to 555's. The last time I used a 555 was in the mid 90's.

@BirdYoumans Жыл бұрын

Thank you my friend for what you do. Your production techniques are well above the norm and you teach without a lot of fluff. Just to the point. You make it look easier than it is!

@Jvavolerpareil 2 жыл бұрын

Great ! I'm using 555 for a lot of projects since long time, so I got some experience about this chip. I still learned new things by watching your video. Very easy to understand for beginners, but still useful for experienced technicians. Thanks for sharing your knowledge with us.

@nicholasmaude6906 2 жыл бұрын

This IC combined with the 741 op-amp IC can be used create literally thousands of different circuits.

@yteicosf1103 2 жыл бұрын

Finally a video on one of the most used IC in the world.

@FW190D9 2 жыл бұрын

Thanks for making these videos. I’m a beginner and your attention to detail helps me immensely !!

@mateo77ish 2 жыл бұрын

I’m an older dood that was surrounded by electronics growing up, but never cared about any of it until recently. I grabbed an off-market Arduino kit and began collecting and disassembling all sorts of machines to try and teach myself. These videos are great for helping me wrap my mind around this stuff. Thank you.

@acestudioscouk-Ace-G0ACE 2 жыл бұрын

So true and me likewise!

@thebeequeeper5424 2 жыл бұрын

@@acestudioscouk-Ace-G0ACE , I'm 76 and just starting to learn electronic's, Pilot and Business owner for 50 years, so I have a lot to learn, would like to connect, if possible.

@acestudioscouk-Ace-G0ACE 2 жыл бұрын

@@thebeequeeper5424, you are welcome to contact me through my website.

@S24W2 10 ай бұрын

Anyone know what the idea of the diodes are in the potentiometer (fan part)?

@kamakaziozzie3038 2 ай бұрын

dood!

@carlgradolph9676 Жыл бұрын

Thanks for making and sharing this video. It's obvious that you spend a good deal of time devising your projects, as well as writing scripts, setting up lighting and camera angles and so forth in order to create outstanding educational content. I wish I could say the same about every KZfaqr....!

@whatstdiggn 2 жыл бұрын

I love your channel. I've been watching it for a couple of years now. You're like the Mr. Rogers of electronics.

@tomaszwota1465 2 жыл бұрын

A dive into the good old 555! Just what I needed on a Sunday, thanks!

@stormztron 2 жыл бұрын

👌

@davidmaloney4860 2 жыл бұрын

Thanks! Outstanding video with a great explanation of how the 555 works and a lot of practical uses. On of your best videos to date (of many)!

@flaviusnita6008 Жыл бұрын

One of the best circuits ever! You find over 1000 examples of using it!

@Jeff-0621 2 жыл бұрын

Thank you! Like the 50 caliber machine gun, it’s a classic and still in use years later. Although there are others that could be use, it’s reliability seem exceptional. I’ve always wanted to learn more, and I know breadboards are the best way to learn circuitry. Knowing about the 555 makes it even easier (financially) to acquire it.

@andresalejandrogazaba9885 2 жыл бұрын

jajajaja con una calibre 50 lo comparo!! ajajjaja ay ay ay!

@AMGTOM Жыл бұрын

I live far in north Africa and never seen such a great electronic Teacher. Thanks Sir.

@stichter51 2 жыл бұрын

Another great, crystal-clear video. The thought and effort you put into the graphics is greatly appreciated. Thanks!

@derekloudon8731 2 жыл бұрын

Hi Bill, sometimes it's nice to 'step outside' the microcontroller world and get back to basics. The 555 has always been a most useful device. It would be good to see more videos along this line (and perhaps some hybrid micro/logic chip outings).

@OcenaSoft 2 жыл бұрын

Wow, I love this IC and have books from the late 70’s just for this IC - well done on this video - one of my favourite so far - THANKS

@_FJB_ Жыл бұрын

This is byfar the most effective and easiest to understand while explaining everything. I'm going to binge on your channel sir! Thank you greatly!

@johnsantos975 2 жыл бұрын

Thank your diagram was the best one to follow as your expertise shows that you can get anyone to understand this circuit. Thank you...

@abasahmed Жыл бұрын

Hans Camenzed, the creator of the legendary 555 would be so happy that you made this video. It was my first IC that I made something with back in 1989.

@JonathanDeWitt1988 2 жыл бұрын

Bill, that was an excellent video! Seriously, you put a lot of work into it and it shows. I thoroughly enjoyed your projects section of the video showing how to apply the 555 timer. You definitely showed why it has a 50 year life span. Thank you for clearing up the origin of the name! Thank you for taking the time to create and upload this quality content Bill. It is much appreciated!

@MatthewRaw 2 жыл бұрын

Easily the best vid on the 555 anywhere on the internet! Thanks so much for making this!

@jamesbiswas3309 2 жыл бұрын

This is an age-appropriate training. I have personally benefited a lot. Sir, thank you very much for this training. May God bless you

@Ymanntronics Жыл бұрын

Thank you so much again! Honestly you are one of the best teachers I have ever encountered in my life🙏

@ismaelissah2518 Жыл бұрын

So far this is the best video I have seen on youtube about 555-timers. This video is awesome! Thanks for the good work.

@thishandlecrapisstupid Жыл бұрын

Thoroughly enjoy learning about the basics without feeling like I'm in kindergarten, or trying to fake it in some graduate class. Well done!

@carlossaraiva7968 2 жыл бұрын

You are a must see teacher. You're great, soft and clear explanation, great English , easy to understand, in sum, Great Professional channel

@LeonMatthews 2 жыл бұрын

That is a fantastic diagram of the chip's functional blocks. Excellent video, as usual. Thank you.

@baldrickdaisy8982 2 жыл бұрын

A very detailed and informative lesson on the 555 timer and how they can be used 👌 Neat little animations in your video too Bill 😄. Thanks 🙏🏻

@acestudioscouk-Ace-G0ACE 2 жыл бұрын

I'm 50 years late learning about this chip but you've inspired me to try it...thanks and better late than never!

@matteocassino3172 8 ай бұрын

Excellent introduction in the 555. Exactly what I needed: 555 in monostable mode in combination with a PIR motion sensor.

@lukebowers536 6 ай бұрын

My fave chip ever invented & so useful for so many things, you have a fantastic clear way of teaching, the internet needs more folks like you, keep up the fantastic work,

@jamestaddeo4435 2 жыл бұрын

I have a couple of tubes of these left in my own parts collection. A very cool, versatile, and useful IC for sure.

@paulrichards2365 Жыл бұрын

i had tubes of 6502 microprocessors and 6502 ram that my wife had me throw out. Not long after I hear NASA wants them for the old Space Shuttle :(

@eddyelectron9234 2 жыл бұрын

Have to agree with Jim Dean re: your teaching style. Thanks for the 555 refresher course. I do however prefer the CMOS 555 in my projects. Many thanks for all your videos.

@qwkimball 2 жыл бұрын

Wow. This is the best explanation of the 555 I've ever come across, and I'm older than the darn chip is.

@mickeyfilmer5551 2 жыл бұрын

A fantastic video. So useful for people learning electronics.

@fuhkoffandie 2 жыл бұрын

The 555 and 556, two of the most useful IC's they've ever made.

@jj74qformerlyjailbreak3 2 жыл бұрын

I didn’t realize this was a NEW video. I thought it was at least 5year old. 😂 It was still gold. God Bless.

@KJ6EAD 2 жыл бұрын

The 555 and 556 have 2-transistor totem pole outputs. In the 4017 sequencer circuit there's no need for 10 current limiting resistors for the LEDs. Since only one output is high at a time, a single resistor on the ground side of the LEDs can be shared.

@Theineluctable_SOME_CANT Жыл бұрын

And..... The 4017 will current limit (run out of drive), so the resistor really is moot.

@KJ6EAD Жыл бұрын

@@Theineluctable_SOME_CANT I've only been able to get about 15mA out of the 4017 but can't recall finding a clear specification in the data sheet. It often makes good sense to use drive transistors.

@Theineluctable_SOME_CANT Жыл бұрын

@@KJ6EAD only for heavier loads...

@user-qw3jn7bd7i 6 ай бұрын

소중한정보를 실제회로를 통해 알려주시니 감사합니다. 영상 만드시느라 수고하셨습니다.😊

@DesertVox 2 жыл бұрын

I just got an order of 20 555 timers, dirt cheap. I was looking around for a good tutorial. This is it.

@kensyootoob Ай бұрын

Excellent video sir! Thanks for being so thorough and having so many examples. Cheers!

@craign8ca Жыл бұрын

I just watched this video again -- kinda like a refresher. Your videos are great.

@Bromon655 8 ай бұрын

I love your schematics, as someone new to this stuff I found them very easy to interpret and replicate compared to elsewhere.

@KaziNazmulYT Жыл бұрын

Hello sir. I'm commenting here just to inform you that you are doing excellent work uploading such informative, descriptive, and quality video tutorials. I'm from Bangladesh, and I always watch your tutorials. Since I am an undergraduate student in the EEE discipline, your previous tutorials helped me immensely in my applied study field. I am happy to thank you and wish you good health. Please keep supporting us.

@terrygerhart1485 Жыл бұрын

👍 👍 👍 👍 Always good Karma to acknowledge the people that help you through out life. All the best from Canada

@SamBatti88 7 ай бұрын

You have the best KZfaq channel for me ! Thank you for this excellent tutorials 😊 I learned many things from you 🎉

@MiguelAbd 10 ай бұрын

Absolutely amazing video. Even I, an absolute beginner, can understand things this way. Thanks!

@ReneStover Жыл бұрын

Excellent demonstrations, thank you!

@mrcleanisin 5 ай бұрын

Excellent video. I no longer have the project or the schematic, but back before cell phones I put together a circuit using a 555 timer in order to patch my mobile CB radio to my home telephone. I was able to do this only when touch tone phones were in use. I only had one-way communication, but it worked well, even got about 10 miles from my base antenna, which was mounted in the top of a pine tree.

@advX 6 ай бұрын

We’ve been using 555 timer chip back in college labs 1998, very useful! Awesome!

@barry7608 Жыл бұрын

Very informative, and very well demonstrated. I reckon with my limited knowledge I could build and understand these circuits

@lorencarlin2087 5 ай бұрын

Very informative! I've breadboarded lots of 555 projects, mostly audio oscillators. Thank you for this video. I understand this chip much better.

@joelkoren3241 4 ай бұрын

Sir, you are a naturally gifted trainer of God's misteries. Brief precise operating principles reinforced by excellent schematics and models.Excellent talents not many instructors have.

@beeman1885 2 жыл бұрын

Great video. Love the “back to basics” material along with the Arduino and Pi material.

@larrygraham3377 Жыл бұрын

Thanks for a great video on 555 Timmers. Takes me back to my lab days when I was in school earning my B.S Degree in electronics. 😉😉😉

@p.g.pg38 2 жыл бұрын

Excellent, comme d'habitude! Merci pour le partage.

@chrisrudy1969 3 ай бұрын

Thanks Professor DroneBot ! So educational! Thank you!

@mistrykm4u Жыл бұрын

Awesome explained about 555timer IC

@ableutopia2721 2 жыл бұрын

Outstanding in all regards, great job. Thanks for posting!

@allnicksweretaken Жыл бұрын

I built that PWM motor speed controller about a year ago for a prototype. Worked like a charm! ^^

@elcanner1170 2 жыл бұрын

The best 555 Timer video on KZfaq!

@jcr723 2 жыл бұрын

One of the best made videos I've seen on KZfaq

@chrisfuller1268 Жыл бұрын

Great video! For de-bouncing I always used 74LS221 or whatever version of the 221 provided the speed and interface voltage needed. Similarly, I used the 74LS74 or other flip flop parts over the 555 due to the simplified operation. Cool to see all the functions of the 555!

@iampepepapi 2 жыл бұрын

Thank you for such an insightful video! Keep making these!

@MOOKAMILLION Ай бұрын

What an AMAZING Video!! There really is a lot of great information that is packed in, well detailed and smoothly organized!! This has been a useful teaching tool as well as such useful review and new information/ideas for Instructors🙏🏼

@lwentz5510 Жыл бұрын

You have done this extremely well! Thank you!

@amnesie6615 2 жыл бұрын

This video is so important, since the NE555 is so useful !!!

@allthegearnoidea6752 Жыл бұрын

I’m using one of these to control the power to a pico in an IOT application. I was going to make a video on the 555 timer but couldn’t possibly make such a good job as you have in this video. Beautiful done my hat is off to you sir! ,

@vihangatck Жыл бұрын

wow this video is so good at explaining the whole process. Thank you so much. You are a brilliant teacher.

@pistonbroke 4 ай бұрын

This is so brilliantly explained and so well put together that I made a few of the projects as I was watching the video. Oh and I subscribed. Thanks for taking the time to do this.

@thomasparisi5333 2 жыл бұрын

Brings back memories :) I remember ordering some 555's, 741's, and 2222's back in the late '70's from James Electronics, fond memories......

@petermolnar6017 2 жыл бұрын

As always, great video! Thank you!

@benyaminmoghadas5592 2 жыл бұрын

This was incredibly useful,keep up the good work

@basiltrim85 Жыл бұрын

Absolutely amazing presentation!!!

@__--JY-Moe--__ 2 жыл бұрын

not time consuming @ all !! super quicky!! thanks ! good luck!

@digihz_data 2 жыл бұрын

Great explanation and tutorials!

@alcroc 2 жыл бұрын

Where were you 40 years ago when I needed a simple yet great explanation of the 555? 😄

@AB.BABY. 2 жыл бұрын

Thanks for this tutorial. Super useful.

@DivinoFiatella 2 жыл бұрын

As a student, this is really precious. Cheers from italy!

@gpTeacher 2 жыл бұрын

Thanks for a really informative tutorial. Certainly demystifies the little workhorse!

@marknkatz Жыл бұрын

Boy, this brings back memories. I haven't done any hardware design and building in decades but used these a lot in the 1970s for my own designs and those copied from the likes of Popular Electronics and Radio-Electronics, among others. Somewhat surprised that the device is still being used 50 years later.