555 Chip Explained - LED Blinker, Buzzer, Siren...
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- เผยแพร่เมื่อ 24 พ.ย. 2024
- Explaining the 555 timer/oscillator chip and what each pin does. Example oscillator circuits for beginners - an LED blinker, changing the frequency and the duty cycle. A beeper and a 2-tone siren with the 555 chip, adjusting the frequency using a potentiometer. Simple schematics easy to understand for newbies.
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I have worked as a electronic technician for about 20 years. But today I learned exactly the operation of 555 by watching after this video. Thank you very much. ❤❤❤❤
Please do the next episode soon ❤❤❤
i always see comments like this one. electronics technician for 20 years but dont know 555 timer?? what
A bit like other comments but I use this chip for over 40 years but has never seen a better explanation like you did just now. Thanks!
One of the best explanation of 555 timer. Only gives relevant information at appropriate times and being clear with circuit function without being too technical
As a kid in the 80s I played with that IC quite a bit. Back in the 80s here in the States an electronics store named Radio Shack sold a book written by Forest Mims called the Mini-Notebook 555 Timer IC Circuits, actually they sold quite a few different Mini Engineering Note books written by Forest Mins and I had them all. Thanks for helping me relive my childhood for a little while, those sure were the good old days.
We had a similar series of books published by Bernard Babani in the UK
Great video. A much needed breath of fresh air, especially compared to alot of other electronics videos which mainly consist of coding and a few pre-made modules getting slapped together with a raspberry pi or arduino.
Definitely keep those videos coming 👍
Absolut GREAT! The first time I understood all and can remember!
Please more circuits as you said at the end! Bistabile-circuit and Monostable-circuit... Thanks in advance!
I would like more 555 videos
It's one of the greatest ICs of all time
and you're one of thd greatest presenters of all time!
I remember years ago troubleshooting a circuit an engineer made using a 555 chip for an up/down volume control on a microphone. It seemed to use PWM to vary the volume to the speakers using a momentary contact switch, spring center was the off position. It was quite an ingenious use of simple parts.
Yeah man. The trip 5 is the best ic to tinker with. You can make alarms and ir remotes and tons of stuff. Hard to believe it was invented in like 1967
@@jstro-hobbytech Yes, it's been around a long time. Released by Signetics in 1972. It had its 50th anniversary in 2022. I remember wiring up circuits on a breadboard in the 80s using one of those Radio Shack Engineer's Mini-Notebooks by Forrest Mims III for the 555 timer chip.
Holy Moly the Radio Shack Mini notebooks... Tandy for us in the UK, but I still think they were titled 'Radio Shack'. Forrest Mims blimey!.@@electronixTech
Used to love Tandy's but it failed when I was a kid I'd of been in there daily 😂😭😂 .... Maplin was brilliant before eBay killed it and prices went ridiculous 😂
Your never to old or to experienced to review a classic circuit. Love the bonus circuit
Fantastic! More like this please DGW, common chip function with example circuits. I will have to watch that video 3 or 4 times to absorb all the information.
More please! I think anyone starting out in electronics would enjoy all the things the 555 can do with just simple circuits.
I had fun as a kid using one as a analog-digital converter with a speaker.
Brilliant work, in explaining the workings and variable options available with the 555 IC.
Please do more of these man, I really learn a lot from your style of teaching.
Best, easiest explanation of the 555 I’ve heard. Awesome, Sir!
I have been using 555 for the last 30 years and must say that watching this, brings back so many good memories.
Thank you for a great video - very comprehensive!
And a beautiful cat! 😻
Best Tutorials, thanks Dan.!
The 555, and the 741, changed the world.
This was an EXCELLENT video, I really enjoyed this! It was thorough and concise, with complementary visuals and a sensible progression of detail. Thank you for making and sharing!
I think the two tone siren using a blinking led on the control pin is just genius, the most easy yet creative idea seen with 555 project.
Keep goin like this diode💪💪💪
Thats the best 555 tutorial I've ever seen without complicated things, straight to the point
It's out standing, how a Cheze technician explans way better this chip than many-MANY people out there dumping videos of the 555 timer!
The best explanation for 555 working principals, Thanks.
As usual you find a way to explain a system much clearer than how I originally learned it. Lol. Thanks again!
Much simpler way to explain than how I had it taught to me years ago. There was a helluva lot more going on (internal transistors and resistors drawn) and it just restricted my ability to retain each pins purpose.
I enjoy learning an ICs internal functions but not when it's a new concept I want to retain and start experimenting with! This should really help a lot of people both in the hobby already and those just experiencing their first intro to the venerable 555!
NOW, I can say that I fully understand the inner workings of the 555 Timer IC ! Thank you.
Great video as usual. I especially like those on-screen short explanations during the video. 👍
WOW!!! Really great way to explain the 555 functionality and application. The hand drawing and walking through it was great. This was way better than walking through the functional blocks of the internals of the chip.
With microcontrollers having gotten so cheap, the 555 seems to have disappeared from almost all commercial uses. But in my opinion it is still the best "first" chip for someone learning electronics after having understood basic components like resistors, capacitors, diodes and transistors (comparators and opamps would be the next in line after the 555). It's really robust (doesn't go up in smoke like many opamps do when they "latch up") and can drive a decent load directly. It has tons of different modes of operation to try out, with immediate results on changes, as you have shown perfectly in this video.
Your explanations were spot on "what you need to know". And even though I tinkered a lot with the 555 and built many not-so-common 555 circuits, including those messing with pin 5, I still learned something new from your video. I never connected a blinking LED to pin 5! Maybe because I never had a blinking LED in the first place, as when I needed a blinking LED I built a circuit with a 555 😅.
Easiest to Understand Explanation on the 555 Timer I Have Seen Thank You for Sharing Sir
The best 555 tutorial ever on internet, with good explanation and practical uses. I used the 555 to make a pwm controlled fan.
I absolutely LOVE the 555! What a classic and flexible IC for so many uses and fun.
Very beautiful chip. That little piece of silicon makes my happy.
Such fun! I was once at a lecture which covered a 555 chip but this video dies far more than that.
I already knew about the 555, but since DGW posted it, I am obliged to watch this video.
DiodeGoneWild, what I love about you is that your understanding of electronics works exactly like mine! (level aside)
Pros don't understand this reasoning, but you do, and watching you is always such a relief 😌
Your explanation to me was 1000 times better than any document I could find online.
P.S: don't worry this is no declaration of love 😂 but if you ever read this, just know you've been my main inspiration for years! Keep up your amazing work!
The best example I have seen about the 555. Would like more of this type of video. Thank you for all the work you put into expanding our knowledge.
Brings back memories of the early 70s for me. There was already a good amount of literature on the 555 back then.
Brilliant explanation. I love the little timer function. Very practical! I´d like to see more of these simple designs. It´s a good idea.
Спасибо. Вы лучше всех объясняете. Этому чипу лет 40 и не каждый так доходчиво может рассказать. Век живи, век учись. Спасибо за Ваши видео.
Just getting into electronics. These are excellent videos. Keep them coming.
This is definitely where you start. Them blinkin lights. I'll tell you what I wished I'd heard when I started, electronics is the art of waveform shaping. That's all it really is. You take a signal of one characteristic and change it into something else. That sums it up neatly. Here you're taking DC and making a square wave. So you're turning a straight flat line into one that goes up and down. So just keep that thought in mind to maintain perspective.
Get out while you still can
lmao@@no_aid_for_UKRAINE
This is one of the best explanations of the 555 that I have seen. When I was starting out on my hobby electronics journey, I watched a load of these that confused me mightily. This was a very clear and simple explanation. Good work!
Skvěle vysvětleno. Víc takových videí pro začátečníky prosim
The 555 is my favorite Chip since 35 years now. I like to use it for any timer circuit.
Veľmi pekné video s vysvetlením činnosti tohto obvodu, aj keď túto teóriu ovládam a už som pár krát tento obvod použil v svojich bastloch, aj tak ma to bavilo pozerať a rád sa pozriem aj na pokračovanie.
Great tutorial! Always wondered what pin 5 did, could never find a very good explanation for its purpose, just "You should add a capacitor between it and ground" but never *why*
Haha you're right man. It was one of the first ics i ever learned to use. I have a giant one made using transistors on a piece of perfboard. Completely pointless but was fun to figure out. Took me forever picking away at it without a schematic. Like 2 years haha
I liked how he bypassed the resistors from 6 to 8. Id never thought of that.
Yes, please do a follow up with more examples. I remember using a 555 with 2 diodes and a potentiometer for speed controlling a fan a few years ago.
Yes, this was most interesting to learn about the 555 and applications where it could be employed.
One of the best I have seen about 555 IC. Amazing. I would like to see more clips like this. In fact these clips are very educational for beginners like me.
Nice demonstration. I have used the 555 a lot. Mostly for oscillators. It'so simple as it only requires 1-2 resistors and a capacitor in most cases.
I mostly use the LMC555 or TLC555 as they need very much less supply current (max recommended supply voltage for LMC555 is just 12 V, not 15 V though - but it works within specifications down to 1,5 V! - so great for low voltage applications. The TLC works all the way from 2-15 V).
The output on those cant source and sink as much current as the NE555 though
- so if using the 555 for something like that beeper or to for example drive small MOSFETs directly without a gate drive, the NE555 might be better - otherwise a simple amplifier/gate drive circuit will be needed.
Connecting the triangular wave on pin 2-6 to one of the inputs of a comparator, is a simple way to get voltage controlled PWM (controlled by a voltage applied to the other input of the comparator).
This can be used to build DC/DC converters, switching power supplies and even inverters or class D amplifiers - as the feedback (or a control signal such as the output from a low frequency sine wave oscillator or an audio signal) can act on that comparator input to rapidly control the duty cycle.
An excellent introduction to the ubiquitous 555 timer. A simple, overview of how it works and how to make it do some things. I've seen many videos and people use a micro controller (or RPi) for doing a task that could easily be done with a 555 timer, so it's good to have a beginner guide out there since maybe the very affordable/cheap 555 could do what someone needs without having to use a micro controller or RPi just for something simple. 555 definitely will trump most in terms of reliability and simplicity (KISS - keep it simple, stupid!) :)
I love 555 timers. You bought back memories of when I used them in their different states back in my electronic education days. However you have shown me things I never knew they could do! Thank you once again!
PS do you ever have one of those moments when you think 'Why?', I ask because for the love of me I can not remember why I ended up buying a tube of 25 of them for .... some reason .. and now I have forgotten what I was going to do with them 🤣
Only your circuits work out of every other video on TH-cam. Make more videos like this
11:32 and 16:51, it is definitely taking my attention the most 👍
(10:45): Synth with wah-wah effects. "Did someone ordered breadboards with extra 555's"? haha
When I drive relays directly with a NE555, I sometimes bridge pin3 and pin7, this way the NE555 can theoretically sink more current. This only works for certain types of circuits that don't require the discharge pin. It only works for sinking current and not for sourcing current, because pin7 can only sink current. It makes a nice relay driver with hypothesis, like a LDR dusk circuit.
So nicely explained 😀, fun fact I was using the CMOS version of the 555 IC for the oscillator of my SLR converter to power a HV transformer 😊
Nice to go back to your roots and remember the stuff you forgot lol. Nice video...
Best explanation in TH-cam ever🔥🔥🔥
Please make this type of videos on different components also🙏🏻
Fantastic! More like this please DGW, common chip function with example circuits.
Amazing video! Please make one about OP Amps.
Thanks for this awesome 555 tutorial !
@diodegonewild
I'm not a beginner but i love to see these videos 😊 can you make a series of these videos 👏🏻
Interesting video. Loved it with the siren effect.
Ah, good old 555 timer. This chip saved me from throwing away microcontrollers when programming wrong oscillator fusebit settings in AVR8 MCU's. Fun part: I used it in low power "regulated" DC/DC converters and as an external ADC in a MCUs, which had only 8 bit timer and external interrupt pin (converting pulse time to voltage) but that was in the 90's, when appropriate IC's or microcontrollers with rich set of peripherals were too expensive for me.
Great video, with super examples, thank you for sharing.
this video is amazing
Nice lesson. You should do more of this. Break it down to One or Two circuits, getting more complex each time, you could do a series.
I use the National Instruments simulator, but you could use the free Spice model software too.
You can actually make a radio transmitter from a 555, was one of the first circuits I made to check out an old oscilloscope, said about 3 mhz on screen, I tuned a radio in and it was spot on! 👍😎😁
maybe you can make a playlist with videos like this?
Great Video tutorial 👍
You're providing good educational content for newcomers. What about something from the analogue department? A Wien bridge oscillator would be a good example....
Thanks for uploading! I appreciate your work!
Great video
You explained it so good. MAke more eletronics videos
Great explanation! 👍
But 555 might be too "integrated" for a beginner, two comparators and an RS flip-flop inside.
I recommend making own oscillators, latches/flip-flops, etc. using Schmitt trigger NAND gates, like 4093. Basic blocks. You can make everything with NAND gates :)
Everyone knows and seen 555 but everyone like to see it again, it is like first love to electronics, the more you have, the happier you are 😂
7:16 It's not that simple. The output is switched by two complementar transistors, so it delivers different current in the Hi and Lo state, which results in a fact, that that circuit does not oscillate with 50% duty cycle, but it's slightly off of this point. You can easily observe this behavior at 6:01 - the red LED is illuminated for shorter period of time than the green one. I ran into this issue when I tried to build an oscillator with about 50%. I compensated this behavior by adding 470Ω pull-up resistor to the output pin of that IC, which gave me (in my particular case) 50% duty cycle, but that's not the right solution to this problem, because 555s manufactured by different manufacturers require different compensations.
15:21 Adding that diode also adds some voltage drop on it. It's not a huge problem as long as you are far from 50% duty cycle, but if you want to hit exactly 50% (or just want to have that thing configurable to almost any duty cycle), you need to compensate that voltage drop by another similar diode in the discharge path.
The 555 is a simple mixed-signal IC! two comparators, flipflop, open drain and high current output.
Very nice content, as usual. Thank you...
Danke! Thanks for this piece of classic!❤
Would like to see more basic circuits.
But also more advanced onces..
Besides that:
I'm highly interested in crazy contraptions of several 555's for PWMs with stable/adjustable frequency and adjustable DutyCycle for example LEDs and motorspeed control.
I like the 555Soundmaschines, but on mobile phone audio the high frequency sound is a real pain for my ears, maybe half the audio time for this?
Once upon a time i had seen 3 555s with different frequencys feed to an RGB LED🎉😂
I bought a load of 555 timer ICs back in the year of the pandemic, I forget why, and what for, but I did make a flasher relay out of at least one of them, which gives me 49 left to work out what to do with... :P
Triple 5 gone wild!
Great video!
Your video is as usual top notice. Please Sir, where did you learn eletronics ? You have a classical mastering of the subject!
Boyhood memories from the 1970s in my case! Similar breadboard to what I had, as well.
You did a great job of explaining how a 555 timer works. Now I understand how it works. And of course: 11:58
You mean "catculator", right?
The best way to get a decent oscillation if you dont use the f=2nRC is to use parts starting with 1 hahaha.
You can see a wild 555 in action if you search for the video: "Computer Chip Walking To Stayin' Alive Synced to Music" :)
There is one thing to add. The first clock cycle on 555 timer circuit is always a bit longer than the rest because the capacitor starts from 0V instead of 1/3 Vcc. It can be annoying in circuits with low frequency like direction indicator lights.
Yes, the first halfcycle is 58.5% longer. But it could be solved by connecting an extra capacitor between the positive rail and the inputs (1/2 of the value of the capacitor that goes to the 0V rail). This series combination of capacitors would preset the initial voltage to 1/3 Vcc.
@@DiodeGoneWild
If possible please show this for visualisation on oscilloscope in next episode
ThX
What's going on 😅 all my favourite channels making doing circuits I'm building right now for different projects..
555 is so cool 👍🇮🇪
konečně nějaký návod jak používat 555 timer
Nice explanation
I brought some a while back to see if its any good for boost converter to run LEDs neva got round to it 😂 and found out theres better chips for the job 😂
Thanks for an interesting video. :)
Do you have the circuit for electronic dice?
Even more interesting is to use a blinking LED from a candle light.
amazing explaniton!
Cool Video including a "nice" siren. 😉
You are precious.
My beloved 555 :)
Con un 555 e un registro a scorrimento si può conquistare il mondoooo 🤪
Your cat was right!
i hope you make video of fixing pc power supply because old ones uses transistors and new ones uses mosfets
I'm thinking about making a buck-boost converter (for my LED charger lamp) using it 🤔
Interesting ic
Please upload next episode soon