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!)
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
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.
I totally agree. My sentiments exactly. 🤣. This is great. Young people today are so blessed to have teachers like this, the internet and RUclips. I’m learning so much.
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!
Whenever I search for a topic on RUclips, I'm always happy to see that DroneBot has covered it because then I know I'll learn everything I need to know in a thoroughly, but simply, explained way ❤
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 , 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.
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!
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.
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 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.
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).
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
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.
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.
@@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.
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.
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.
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.
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!
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.
This is a general comment so, not necessarily about this video. I just want to say I like your channel a lot because all your explanations are crystal clear and your visual animations are always top notch. There are several good channels out there talking about similar topics but yours is amongst the best. Don't take offense but the only thing I dislike about your channel is the fact that you talk very slowly...! : so I end up watching all your videos at 1.5 times normal speed, and I find that the flow of your speech is just about normal then lol... : ) So... Kudos and keep up the good work !
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 RUclipsr....!
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.
Crikey it is for me a blast from the past, I built myself a Morse sender outputting to a telephone earpiece when I was teaching myself Morse code back in the late 70s
Thanks for your extremely clear lectures. On it being a rumor that the 555 was chosen because of the three 5k resistors, I think it's still possible to turn out true even if it was chosen by someone in the marketing department who thought the name sounded cool. I mean, if I knew nothing about electronics at all and someone showed me a schematic of a new timing chip product and told me market it, the three 5's would probably be the only part I would immediately understand and, hence, find "cool".
For astable mode you can also use just one capacitor and one resistor between output (pin 3) and threshold and trigger (pin 2 and 6). so you don't need the discharge (pin 7). It is also the only way to get 50% duty cycle and it safes some current which goes unused through R1 into discharge if you use the circuit according the the NE555's data sheet. This is especially important if you use the low power CMOS versions of the 555. I like the TLC555 very much because it has the shortest rising and falling times of all these 555 devices. You can operate it up to frequencies of 1 MHz without problems. I use a TLC555 to test the jump response of audio power amplifiers with a 10 kHz rectangular test signal under mixed resistive an capacitive output loads.
Idk, I have marketing to totally ignorant of the item they are trying to sell. They throw crap at a wall to see what sticks. Almost as (tongue in cheek) intellgent as the cost reduction department!
Broo. This dude sounds like my professor. So slow and and monotone it puts me to sleep. But no lie. This dude really be giving you all the info youll ever need fr fr tho.
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.
How does it feel that a video on this old thing gets so many views compared to your others? What does it say? That there are a lot of beginners and nostalgics? And people like me that are just curious if you can bring something interesting to the table? You did a very good job explaining it.
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,
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.
I built a 10 minute timer to remind me to ID on ham radio using a 555 timer and a buzzer with 2 led's and a switch to select between led run and time is up or buzzer. That was 30 years ago and it still works fine. Has an adjustable resister to set time. Brings back memories. 73 de kb7ici
ahh the classic... i remember when i fiddle with this one as a kid in school... remembered also how to choose PIC for my projects as well... man it was fun doing these things with my friends...
Thank you, for another wonderful video! Your point about the price advantage of the 555 verses micro-controllers is well taken and not disputed, at all. But, I would like to share some knowledge, for the folks that don't know much about MCUs. There are many small micro-controllers that fall within your $1 total project budget... The ATtiny85, PIC12F683, etc. 1) They offer different functions than a 555 and those different "muscles" may be advantageous to the project's goals, so they are worth considering. 2) These are older MCUs and they are being phased out by the OEMs, in favor of their newer designs. I know all the business reasons for phasing out a product, but losing these little powerhouses is a pet peeve of mine. If we will continue to buy them, they will surely continue to make them.
I used a 555 to build a monostable circuit to replace the rear defrost timer in my van when the controller quit working. I had to figure out how to make it not come on when the key was turned on and how to shut it off when I wanted to before the time ran out, and used a mom-off-mom rocker switch to control it. After a little bit of trial and error to get everything stable (using some pull up and pull down resistors) the thing works great. I just wish I could have figured out how to make it work with a single momentary button for push on/push off operation.
Sometimes when i touch a wire it lights up the LED. I dnt have 555 timer and the power was off. Also great job on the website. Being able to grab a pdf form is incredibly helpful for offline reading and just having a chunk of info on the ready at all times! Great work
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🙏🏼
Wow, the venerable 555 timer. I remember playing around with that chip on breadboards back in High School as I was experimenting with digital electronics. That would be late 70s.
Super. I needed a circuit for a modification to the tailgate lock on my car. I happened across this and it's rekindled my interest in electronics. Many thanks
Many automotive applications for the 555 chip. Back in 1970’s I came a cross a great application from one of the electronics magazines of the day. Allowed me to fit adjustable intermittent wipers to my 1960’s Morris minor. What was great about it was the on/off switch was an adjustable pot. So unlike even modern intermittent wipers I could vary the timing to suit the rainfall. Rebuilding an old 1970’s Landrover currently and plan to incorporate this in the build.
May be repeating what's been commented. At 12:22 you refer to the 1K res as 10K. No big deal. Looking closely at the LED image the internals can be discerned. Unfortunately they've got the long lead associated with the cathode not the anode. Just an FYI. I truly appreciate the clarity of your presentations. Thanks.
For the light chaser you can also use just one dropping resistor instead of 10. You just have to put it between all cathodes of the LEDs connected together and ground. And you can also build a proportional servo tester with a single 555 timer by use of a potentiometer in the astable multivibrator circuit which sets a higly asymmetric duty cycle with about 20 ms to variable 1 to 2 ms duty cycle.
The 555 timer was available in 1972 by Signetics. I remember making a timer for the darkroom photo enlarger exposure. The 20222A and 2N3055 transistors were very popular for projects at the time also.
Would you mind offering a quick description of the projects? I'm trying to wrap my head around this and end up feeling like I'm as dumb as a pile of rocks. I think if I could come up with a real-life purpose for using it then I could build my understanding up around that goal, but so far, apart from a light independently blinking at a given rate or sending a square wave to a stepper motor, it hasn't clicked for me why this is so useful. (I've also been staring at the Bistable Mode schematic and reading the description over and over and over for the past hour and at this point feel like I'm just going to cry out of frustration, because the language seems so contradictory and I can't figure out why someone would need to make what is ultimately On or Off so complex...)
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.
For my Light Chase circuit I put a single resistor on the ground side of the LEDs. Only one LEDS is on at a time. Introducing the resistor network is a good idea as breadboarding multiple resistors certainly is tiring and few even know of them.
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!)
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
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.
I totally agree. My sentiments exactly. 🤣. This is great. Young people today are so blessed to have teachers like this, the internet and RUclips. I’m learning so much.
Well said Jim, the book just confused the hell out of me. Gonna get me a 555! lol.
@@diggee172 Yep, these whippersnappers got it so easy! (Now get off my lawn!)😉
It was always a 555 in my projects back in the early 70s. Very versatile
@@alcroc p
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!
This is a REAL tutorial, none of that 12 mins joke, thank u!
Whenever I search for a topic on RUclips, I'm always happy to see that DroneBot has covered it because then I know I'll learn everything I need to know in a thoroughly, but simply, explained way ❤
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.
So true and me likewise!
@@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.
@@thebeequeeper5424, you are welcome to contact me through my website.
Anyone know what the idea of the diodes are in the potentiometer (fan part)?
dood!
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!
I studied Logic gates and 555 timers back in 1986 glad to see there is still someone teaching the basic electronic building blocks.
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.
I have not come across a 555 timer illustration this beautifully done. Thank you Sir, for the time and hard work put in.
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.
Finally a video on one of the most used IC in the world.
This IC combined with the 741 op-amp IC can be used create literally thousands of different circuits.
This was a great intro to 555's. The last time I used a 555 was in the mid 90's.
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.
And.....
The 4017 will current limit (run out of drive), so the resistor really is moot.
@@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.
@@KJ6EAD only for heavier loads...
A dive into the good old 555! Just what I needed on a Sunday, thanks!
👌
Where were you 40 years ago when I needed a simple yet great explanation of the 555? 😄
I think he said 555 555 times
Your explanations and graphical illustrations are 100% easy to understand, the best I've seen so far, well done
I live far in north Africa and never seen such a great electronic Teacher. Thanks Sir.
I love your channel. I've been watching it for a couple of years now. You're like the Mr. Rogers of electronics.
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).
The 555 and 556, two of the most useful IC's they've ever made.
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
flashback to Forest M Mimms III engineering booklets sold at radioshack LOL
Your bistable mode schematic is incorrect. You have both switches going to Vcc, when they should be going to ground.
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.
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.
@@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.
I didn’t realize this was a NEW video. I thought it was at least 5year old. 😂
It was still gold.
God Bless.
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.
👍 👍 👍 👍 Always good Karma to acknowledge the people that help you through out life. All the best from Canada
소중한정보를 실제회로를 통해 알려주시니 감사합니다.
영상 만드시느라 수고하셨습니다.😊
Thanks for making these videos. I’m a beginner and your attention to detail helps me immensely !!
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.
jajajaja con una calibre 50 lo comparo!! ajajjaja ay ay ay!
You are a must see teacher. You're great, soft and clear explanation, great English , easy to understand, in sum, Great Professional channel
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.
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!
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.
Thank you so much for your content. Your channel is my go-to for these tutorials.
I'm 50 years late learning about this chip but you've inspired me to try it...thanks and better late than never!
This is a general comment so, not necessarily about this video.
I just want to say I like your channel a lot because all your explanations are crystal clear and your visual animations are always top notch.
There are several good channels out there talking about similar topics but yours is amongst the best.
Don't take offense but the only thing I dislike about your channel is the fact that you talk very slowly...! : so I end up watching all your videos at 1.5 times normal speed, and I find that the flow of your speech is just about normal then lol... : )
So... Kudos and keep up the good work !
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 RUclipsr....!
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......
أشكرك وأقدر مجهودك ، تحياتي لك من تركيا .
I have a couple of tubes of these left in my own parts collection. A very cool, versatile, and useful IC for sure.
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 :(
Thoroughly enjoy learning about the basics without feeling like I'm in kindergarten, or trying to fake it in some graduate class. Well done!
A fantastic video. So useful for people learning electronics.
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.
Crikey it is for me a blast from the past, I built myself a Morse sender outputting to a telephone earpiece when I was teaching myself Morse code back in the late 70s
Thanks for your extremely clear lectures. On it being a rumor that the 555 was chosen because of the three 5k resistors, I think it's still possible to turn out true even if it was chosen by someone in the marketing department who thought the name sounded cool. I mean, if I knew nothing about electronics at all and someone showed me a schematic of a new timing chip product and told me market it, the three 5's would probably be the only part I would immediately understand and, hence, find "cool".
Imagine if marketing had decided to call it the 911;).
@@nicholasmaude6906 You mean like the Porsche?
For astable mode you can also use just one capacitor and one resistor between output (pin 3) and threshold and trigger (pin 2 and 6). so you don't need the discharge (pin 7). It is also the only way to get 50% duty cycle and it safes some current which goes unused through R1 into discharge if you use the circuit according the the NE555's data sheet. This is especially important if you use the low power CMOS versions of the 555.
I like the TLC555 very much because it has the shortest rising and falling times of all these 555 devices. You can operate it up to frequencies of 1 MHz without problems. I use a TLC555 to test the jump response of audio power amplifiers with a 10 kHz rectangular test signal under mixed resistive an capacitive output loads.
One of the best circuits ever! You find over 1000 examples of using it!
NE555是老掉牙的蕊片，真的是前輩時代所使用的，真叫人懷念，謝謝你
Excellent introduction in the 555. Exactly what I needed: 555 in monostable mode in combination with a PIR motion sensor.
I just got an order of 20 555 timers, dirt cheap. I was looking around for a good tutorial. This is it.
Thank your diagram was the best one to follow as your expertise shows that you can get anyone to understand this circuit. Thank you...
Probably the marketer himself took the name from the three resistors..?
agreed, thats most likely the case
@@amnprince9121 3:31
Yes
Idk, I have marketing to totally ignorant of the item they are trying to sell. They throw crap at a wall to see what sticks. Almost as (tongue in cheek) intellgent as the cost reduction department!
Broo. This dude sounds like my professor. So slow and and monotone it puts me to sleep.
But no lie. This dude really be giving you all the info youll ever need fr fr tho.
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.
Wow. This is the best explanation of the 555 I've ever come across, and I'm older than the darn chip is.
555 timer is cool.😁ironically I have all of the components for these projects 😁👍
How does it feel that a video on this old thing gets so many views compared to your others? What does it say? That there are a lot of beginners and nostalgics? And people like me that are just curious if you can bring something interesting to the table?
You did a very good job explaining it.
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,
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.
This is an age-appropriate training. I have personally benefited a lot. Sir, thank you very much for this training.
May God bless you
I loved the 555. My clumsy efforts and poor soldering managed to make a wheel of fortune that spun down from fast to slow using a series of these.
I built a 10 minute timer to remind me to ID on ham radio using a 555 timer and a buzzer with 2 led's and a switch to select between led run and time is up or buzzer. That was 30 years ago and it still works fine. Has an adjustable resister to set time. Brings back memories. 73 de kb7ici
I need to do more 555 circuits....they are fun! i been a mcu nut for the last 10 years...getting back to analog circuits and stuff.
I love your schematics, as someone new to this stuff I found them very easy to interpret and replicate compared to elsewhere.
We’ve been using 555 timer chip back in college labs 1998, very useful! Awesome!
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)!
ahh the classic... i remember when i fiddle with this one as a kid in school... remembered also how to choose PIC for my projects as well... man it was fun doing these things with my friends...
To all the people new here... This guy is the best in the business
Thank you, for another wonderful video! Your point about the price advantage of the 555 verses micro-controllers is well taken and not disputed, at all. But, I would like to share some knowledge, for the folks that don't know much about MCUs. There are many small micro-controllers that fall within your $1 total project budget... The ATtiny85, PIC12F683, etc. 1) They offer different functions than a 555 and those different "muscles" may be advantageous to the project's goals, so they are worth considering. 2) These are older MCUs and they are being phased out by the OEMs, in favor of their newer designs. I know all the business reasons for phasing out a product, but losing these little powerhouses is a pet peeve of mine. If we will continue to buy them, they will surely continue to make them.
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.
😉😉😉
Easily the best vid on the 555 anywhere on the internet! Thanks so much for making this!
I used a 555 to build a monostable circuit to replace the rear defrost timer in my van when the controller quit working. I had to figure out how to make it not come on when the key was turned on and how to shut it off when I wanted to before the time ran out, and used a mom-off-mom rocker switch to control it. After a little bit of trial and error to get everything stable (using some pull up and pull down resistors) the thing works great. I just wish I could have figured out how to make it work with a single momentary button for push on/push off operation.
Sometimes when i touch a wire it lights up the LED. I dnt have 555 timer and the power was off.
Also great job on the website. Being able to grab a pdf form is incredibly helpful for offline reading and just having a chunk of info on the ready at all times! Great work
Thank you so much again! Honestly you are one of the best teachers I have ever encountered in my life🙏
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
As a student, this is really precious. Cheers from italy!
Super Helpful Video!!!!
Now, I understand Physics without attending School 😇😇😇
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🙏🏼
Wow, the venerable 555 timer. I remember playing around with that chip on breadboards back in High School as I was experimenting with digital electronics. That would be late 70s.
This video is so important, since the NE555 is so useful !!!
Absolutely amazing video. Even I, an absolute beginner, can understand things this way. Thanks!
Super. I needed a circuit for a modification to the tailgate lock on my car. I happened across this and it's rekindled my interest in electronics. Many thanks
Many automotive applications for the 555 chip.
Back in 1970’s I came a cross a great application from one of the electronics magazines of the day.
Allowed me to fit adjustable intermittent wipers to my 1960’s Morris minor.
What was great about it was the on/off switch was an adjustable pot. So unlike even modern intermittent wipers I could vary the timing to suit the rainfall.
Rebuilding an old 1970’s Landrover currently and plan to incorporate this in the build.
How I have been looking for this video in 1981. Glad I found it now.
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!
May be repeating what's been commented. At 12:22 you refer to the 1K res as 10K. No big deal. Looking closely at the LED image the internals can be discerned. Unfortunately they've got the long lead associated with the cathode not the anode. Just an FYI.
I truly appreciate the clarity of your presentations. Thanks.
I built that PWM motor speed controller about a year ago for a prototype. Worked like a charm! ^^
Thank you for this video. I'm an old dog learning new tricks; this helps a lot.
Very informative! I've breadboarded lots of 555 projects, mostly audio oscillators. Thank you for this video. I understand this chip much better.
For the light chaser you can also use just one dropping resistor instead of 10. You just have to put it between all cathodes of the LEDs connected together and ground. And you can also build a proportional servo tester with a single 555 timer by use of a potentiometer in the astable multivibrator circuit which sets a higly asymmetric duty cycle with about 20 ms to variable 1 to 2 ms duty cycle.
The 555 timer was available in 1972 by Signetics. I remember making a timer for the darkroom photo enlarger exposure. The 20222A and 2N3055 transistors were very popular for projects at the time also.
One of the first things I played with as a kid in the 80s. I still have my Forest Mims Engineers Mini Notebook on the 555.
So far this is the best video I have seen on youtube about 555-timers. This video is awesome! Thanks for the good work.
The best 555 Timer video on RUclips!
Back to college days (1974) and RadioShack! Thanks!
God I miss Radio Shack.
I just watched this video again -- kinda like a refresher. Your videos are great.
One of the best made videos I've seen on RUclips
I came here looking for a simple timer for a very simple project, and I left with 4 additional solutions that I didn't even knew I needed.
Would you mind offering a quick description of the projects?
I'm trying to wrap my head around this and end up feeling like I'm as dumb as a pile of rocks. I think if I could come up with a real-life purpose for using it then I could build my understanding up around that goal, but so far, apart from a light independently blinking at a given rate or sending a square wave to a stepper motor, it hasn't clicked for me why this is so useful.
(I've also been staring at the Bistable Mode schematic and reading the description over and over and over for the past hour and at this point feel like I'm just going to cry out of frustration, because the language seems so contradictory and I can't figure out why someone would need to make what is ultimately On or Off so complex...)
Great video. Love the “back to basics” material along with the Arduino and Pi material.
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.
For my Light Chase circuit I put a single resistor on the ground side of the LEDs. Only one LEDS is on at a time. Introducing the resistor network is a good idea as breadboarding multiple resistors certainly is tiring and few even know of them.
Excellent video sir! Thanks for being so thorough and having so many examples. Cheers!