MOSFETs and Transistors with Arduino
ฝัง
- เผยแพร่เมื่อ 5 พ.ค. 2024
- Today we will learn how to use Transistors and MOSFETs to enable our Arduino to switch high-current DC loads, including a 12-volt RGB LED Strip Light.
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Transistors are the basic building block of modern electronics. Just about everything uses transistors, including the Arduino itself.
Using a power transistor or MOSFET we can drive high-current devices using the logic-level outputs from our Arduino. Today we’ll learn to use both devices.
We will start with a simple transistor switch, you’ll see how easy it is to switch a high-current DC lamp using a popular power transistor.
Inductive loads like motors and relays present an additional challenge, as these devices generate a “back-EMF” that we need to deal with. We’ll use a diode to take care of the back-EMF and build a simple motor speed controller.
We will then turn our focus to MOSFETs. MOSFETs have a number of advantages over standard transistors. We will learn how to use popular MOSFET modules to control an RGB LED Strip in a simple but colorful experiment.
Here is what is in today's video:
00:00 - Introduction
02:49 - Transistors and MOSFETs
16:23 - Transistor Switching Demo
22:54 - Transistor Motor Control
29:52 - MOSFET RGB LED Strip Light Control
Please note that transistors and MOSFETs are great for controlling DC loads, but not AC. I’ll be showing you how to control AC loads in a future video. - แนวปฏิบัติและการใช้ชีวิต
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Every DBW video I see, I'm just blown away how well you break stuff down. You're the single reason I'm still doing electronics
Of all the damn arduino mosfet videos out there, this is THE BEST one out there for understanding the process from beginning to end. I am eternally in your debt.
Thank you so much for the video! It will definitely help me in my DC motor drive projects. Until now I was working with small motors for rc cars and wanted to move to the next step and drive bigger motors.
Spending 51' watching this video was a beautiful experience where i learnt a lot about automated systems...thank you brother
Definitely one of the most fantastic learning channels on TH-cam. Great learning for folks just getting into electronics--and even a great review for people who've not done this stuff for a while.
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I’m so jealous of this guys workspace. That is some magnificently ocd organization. Beautiful!
Same feeling bro
Yeah mine is so messy. I am slob. Haha
Ah, that has to be all CGI. Nobody has that COoL a shop! :O)
This is why I keep coming back to these videos.... workshop envy
What? Your workshop doesn't have every tiny drawer labeled and every tool in its own place on a pegboard? And a power supply spanning the gap at the bottom, and two voltmeters? and a resistor color guide?
Your teaching and videos are so wonderful.
I'm very grateful that there's people in the world teaching like you do.
Awesome stuff !! Thanks !!
(Watching from NZ)
Fantastic! Thanks a lot for all your great, inspiring work & tutorials. Really nice that you provide a fancy website along with the videos with the detailed articles, code snippets, lib downloads and of course the PDF version of the articles. I really like your clear way of explaining things. Best wishes!
Hey, I just want to say I love your channel and it's really helping me a lot in my projects!
I'm from Mafra, SC, Brazil and YOU are my main reference for my electronics-related learning. Great explanation, direct, precise and organized! Congratulations for your videos!
PS: i just LOVE your workshop!
In love with your shop, absolutely amazing
Another fantastic educational video from our teacher.
Great video! Clear and easy to follow. You mention everything that is needed to mention, which makes it comfortable to follow. Thank you.
this channel is GREAT. This guy captures exactly the possible doubts that could be in our mind, and answer they BEFORE we even ask it! That's a teacher!
Yes, together with bigclivedotcom they do a hell of a job on learning us a LOT.....
Really cool! I had a set of those about that long around the windshield of my Class A Motor Home for holiday use. They are still stuck up there and have been for over 6 years, it came with an AC to DC power supply with built in controller so I ran it off that. We used to head south in November from South Dakota, and come home in March from Arizona so it was a home for me and my wonderful wife (RIP) who was taken from me because the hospitals shut down just when the cancer made itself known if she could have been tested, it could have been stopped but the test was considered non essential surgery so she had to wait 3 months and by then the cancer had invaded most of her body. It was a long 3 months at home while I with the aid of my daughter cared for her as the cancer ate away at her fragile body. In the end she spent 4 days in hospital till her last breath was taken, with me on one side and my daughter on the other holding her hand as it was exhaled for ever. Damn covid! She did not have it but the government kept her from the test and at the time there were NO CASES and the hospital sat empty!
Thanks for this. I learn by solving problems and your videos act as a good bridge from application to theory. Sure, I'll probably spend the first couple of years being asked why I didn't know something obvious that's taught in 101, but after that I usually (in software, at least) end up doing stuff simply because I hadn't been taught that it can't be done.
This was an excellent tutorial! Thank you for being so thorough, and most importantly for going SLOW!
I just found your channel and I love it. I've been working with Arduinos and electronics for years and I'm learning some things from your channel.
Great vid, any coverage of transistors, mosfets, bjt's etc. Will always stimulate healthy discussion.
Can hardly wait for the next vid in this series.
Thanks for sharing.
👍👍👍👍👍
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You Sir are one of the few ppl on YT who use esd protection - wrist strap and dissipative foam for lining your parts drawers.
Bravo!
High quality quality education and no student loans. Amazing. THANK YOU
Thanks for wearing the static wrist strap. It demonstrates a good habit.
I viewed a lot of videos about transistors/mosfets but now I really got it. Thank you, very good tutorials!
The man speaks with confidence, I call that Knowledge. Thanks
I call that a politician.
@@scottmcclements7566 No.....this man does not lie.
@@scottmcclements7566
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You're The Man!
Thanks for all your efforts.
You're fast becoming my favorite teacher!
Almost everything I want to do, you have already have the videos made!
Timing is everything. What an adventure...
Subscribed and checking out the website and forum.
Good technology is less costly these days to bring this all together like never before in history.
Android USB OTG to a Arduino Mega, is quite possibly the greatest simple potential for AI robots.
That was perfect.
Thank you so much. I’m headed straight to my workbench yo finish my project.
Great. Your slow way of speaking makes learning much easier, even for those who don't speak English natively, like me. Congratulations!
Absolutely !
Your videos are really, really well made - I enjoy watching them and learn a lot. After having watched your videos on stepper motors and servos, would you please consider making a tutorial on the similar hobby-sized brushed DC motors with rotary encoders installed on them? They come with either optical or magnetic encoding, some with a single sensor, and some with AB encoding like in rotary encoder knobs.
You are so good at clearly explaining how everything works. Thank you!
th-cam.com/video/OlGxkWtopIg/w-d-xo.html
Very good informational video, which basically demonstrates how to replace the good old mechanical relay with a modern MosFet transistor.
Thank you sir! I really needed to hear the description and function of these transistors.
It is tremendously helpful!
What a brilliant channel. Keep up the good work, your content and delivery is on point!
Good stuff sir. Fairly comprehensive while still being practical and to the point. Well presented and easy to follow. Keep it coming, and most importantly, thanks for creating.
Code suggestion: use #define and/or const variables instead of regular global variables for static values (pin #, physical constants, etc).
Why? This matters when memory is a constrained resource. The compiler puts #define values and const variable values into the machine code, which is stored on Arduino's flash memory. In contrast, the compiler allocates space for regular global variables in Arduino's SRAM. Arduino UNO has only 2K of SRAM, but 32K of Flash.
The other reason is readability. You can use #define and/or const variable to implicitly document that this value does not change during runtime. A regular variable suggests that the value might change.
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I was able to complete a project I've been struggling with for ages now. Really helpful so thank you very much!!
Very educational it open my eyes with a new whole perspective.
Iam now beginning to have interest in electronic hobby
Hi Bill. When watching this I thought that it might be an idea one day to show people how you progress from a fritz diagram to a maze of wires on a breadboard. I think some people (me included) have difficulty transferring from design to a pile of component placement and wire alignments. Cheers and thanks for your works.
Amazing. In older days we would have to pay for a class of this quality at a private workshop.
Very informative! I'm a complete n00b, and wanted to make a delay-timer on a fan in a 3D-printed enclousure. This is now far more approachable after watching your video - thank you so much!
An incredibly practical and absolutely fantastic video. I love your teaching style and the comprehensiveness of your topics. Thank you for taking the time to share your knowledge. This is a gem of a channel.
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Oh, how I love when the teacher speaks calmly and without "youngsters" loud cheering and "cool" expressions! THANK YOU!
This was great! I don't have the components yet for this. But now I do have the urgency to get them. This is so over my skill level so far. You set this up and explained it so well I'm going to give it a try anyway.
An excellent introductory tour - and for those of us doing mainly digital electronics you cover most of what we need to know about interfacing our puny logic circuits to the power hungry big-boys world of motors, relays, solenoids and lamps.
One quick observation. As you noted, the LEDs on an RGB chain get quite hot. Thus, it's NOT a good idea to operate them on the reel like that for very long as they can get heat damaged and you start to get failures. Each individual LED doesn't generate much heat, but on a reel like that each position contains three LEDs (a red a green and a blue) and over a 5M length you may have a couple of hundred of them. When theyy are spread out its not really noticeable, but when they are reeled up tight together like that they generate quite a lot and if used for long they might overheat and fail.
Really cool, straight-forward, clearly and easily explained. This guy makes the world a better place. For some electronics noobs and enthusiasts at least.
outstanding Bill! thanks for this one.. it helps to explain things to me..carry on, and be safe brother.!
Love your channel, excellent explanation as usual. Thank you, you're a great teacher!
Great simple explanation of a complex subject. Your graphics are priceless.
This is the cleanest and neatest shop that I've ever seen. Wow.
i was just about the say the same thing. shows he is very organized. being organized says a lot about how you think and work. I would trust this man with my electronics or projects.
@@Dimprecator lol lol lol lol lol .. good one .. i knew in my gut i was putting my foot into some dark deep areas lol lol
@@Dimprecator a desk is not the same as a workbench ....
Knowledgeable and detailed, great stuff, mate! Thx a lot!
Great video tutorial. Clearly explaining all the things. Thank u so much.
just to share. i`m impressed, after youtube autoload this video while i was making something else, my brain recognize your voice... WOW how long i met you. =) Nice to see you again. Keep safe.
Hello from India Sir.....thank you very much for creating such informative videos .....your videos and teachings are helping a lot....the way you teach us by doing practical things is the best way to teach....God bless you with good health and happy life....always looking for more from you.
It's a really great video, I liked it a lot. It's a bit slow, so it's easily watchable at 1.5x playback speed. Thanks.
Thanks Bill for the video. It will helps me a lot as a beginner with Arduino. as useal you are very clear in the workshops.
Great explanation. I like using the 2n3055 transistor on wheel chair motors. Lots of power and using 24 to 36 volts.
Perfect wanted you to do this for a long time.
A very useful and interesting video. Thank you for yet again more tips and advice.
I am an Industrial engineer with hands on experience on electronics, but never on the digital systems. I started viewing your videos and voila...here i am bringing ideas to life....Thanks...would like to connect more with you. Appreciate your work a lot..Please let me know how to get in touch with you if i have missed out reading or hearing if you ever mentioned how to do so.
Thanks man, you are one of the few jewels here on youtube
Not even a 1 second is wasted, thanks. Very good video from start to end. Explained what is transistor a general info, and how to use them in curcuit, circuit cables and connections made very clear with drawings. Nice informations and warnings along the video are also nice.
Sir. Good teacher. You speak very gently and slowly. Which is good for non English people like us. Appreciate.
I am very grateful for the explanations and suggestions, the truth is that he takes knowledge to the highest level very seriously, thank you very much. Please do not stop with this brilliant way of approaching electronics.
Really appreciate the hard work you put into your video thanks
I keep getting flashbacks of "the office" TV series with your intro music
It's good
oh I totally missed this, thanks for sharing
I love your videos. I learn a great deal from them. I just wanted to clarify the comments about the diode. Inductive loads resist starting and stopping their current flow. They act kind of like a flywheel. When the circuit tries to stop the motor or coil current suddenly the collapsing magnetic field attempts to keep the current flowing the same direction resulting in a large spike of voltage which can destroy the transistor. The diode allows a backward current to flow around the coil which prevents damage to the circuit.
Well said! It's so much easier to think in terms of current than back emf. Nature won't let the magnetic field collapse in zero time, so we allow the current to continue flowing in the SAME direction through the coil by adding the diode. And the energy stored in the magnetic field gets converted to heat in coil and diode rather than some other unfortunate component.
Thanks for Wonderful workshop in back ground; clear flow of lesson and practical guide
Thanks a lot for all this work, which becomes a "must watch" for all makers.
37:04 for anyone doing this for the first time, uncoil these. I learned the hard way LEDs can produce enough heat to cook themselves.
Never thought about that until this very moment.
Good tip!
And there would be a gazillion in there with them all being flat!
brilliant - I havent seen this type of tutorial before! really great
Such a soothing voice, you actually remind me of my electronics instructor in high school (technical high school).
Fantastic! Thanks a lot for all your great, inspiring work & tutorials.
Great information and very slick graphics (Presumably many hours with Power Point)
I think your information is a good resource,
Thank you
Very informative and consistent detail.
Nice examples in the real use.
This was a very helpful video. I'm new at using an Arduino (Elegoo Starter Kit) and have a great thirst for learning electronics. You really helped me understand more about transistors. Thank You!
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I love your channel! You're crazy good at teaching this stuff. Thanks!
By far, the best channel on TH-cam.
Many thanks for your time.
Great video, I always learn something from your videos, please keep them coming, thanks
Thank you so much for sharing this knowledge and well explained and demonstrated.
Great video thanks, looking forwards to the thyristor one.
Sure do enjoy the information you present in your videos.
Thank you for such informative well structured lessons. Really do appreciate these lessons!
Another great video very well explained and appreciated. One correction though, with the reverse biased diode across the transistor when driving the inductive load, it isn't there for the initial counter emf when the voltage is first applied, rather it is for when the field collapses, as when the applied voltage is reduced. counter emf will resist any initial current flow, the collapsing magnetic field with the inductive load will produce whatever voltage is required to drive enough current to collapse the field. it is this created voltage during the collapsing field that will pop your transistor without the reverse diode in place.
I was wondering about that too. Thanks for setting my world right again.
Reverse back-EMF is created when the motor is turned off, not when it powers on. Inductors resist changes.
The diode in reverse-parallel conducts the back-EMF back into the motor to absorb it's own energy also stopping itself faster.
The disadvantage is that you can not drive the motor in reverse by simply reversing the polarity. Most MOSFETs are designed with a diode built in to prevent any back-EMF damage but BJTs do not.
You are correct, that the back-EMF is when motor is turned off not when turned on.
You can make the motor go in reverse by simply reversing the polarity. Just reverse polarity to the motor, but not the diode. You could do this with a DPDT Switch between the diode and the motor. If you wanted to reverse the motor under software, things get very much more complicated. Two Zener diodes back to back would work, but you would still have the problem of reversing the control voltage.
cheers.
He is using PWM to control the speed of the motor, so it is continuously turned on and off hundreds times a second.
The body diode in the mosfet is connected in reverse parallel with the mosfet, so it clamps the drain to the negative supply to suppress negative spikes. But that's not the issue with driving inductive loads connected to the drain, which will be pulled positive when the current through the inductor stops. The body diode won't stop the drain from exceeding its maximum voltage rating as it's reverse-biased as long as the drain stays positive. You need the flyback diode when driving inductive loads from any type of semiconductor.
Your great knowldge allied with your calm way in explaining makes almost impossible no to learn. Thank your, Sir!
Thank you teacher ! a hug for you from Brazil !
thanks! I was searching for this for weeks. I asked people on the internet how to do this but your video finally explains it well. Exactly what I need. I want to switch the christmas lights (4.5 V DC) using an arduino because I am lazy to stand up, go to the switch and use my own fingers to turn it on or off. Now I can control the lights via wifi. :))
th-cam.com/video/OlGxkWtopIg/w-d-xo.html
That was a very helpful video. I have put off learning that arduino too long. I already have the LED RGB (collecting dust) I will admit the common positive on the strip confused me. Thanks a bunch.
That's a top level demonstration / tutorial. Thank you.
Hey that's a lot easier than I thought it would be. Thanks so much for making these videos!
th-cam.com/video/OlGxkWtopIg/w-d-xo.html
This great man, was surely born to be a teacher, thank you by hart
Great! Your teaching and videos are so wonderful. Knowledgeable and detailed, great stuff, mate! Thanks a lot! Your slow way of speaking makes learning much easier, even for those who don't speak English well, like me. Congratulations!
And you can always set the playback speed to 1.5x otherwise😀
Awesome video's my man. Keep it up.
It must be like being a high school electronics teacher but with the added bonus of 1) only reaching students who actually care about the lesson, and 2) not having to put up with the difficult students who hold up the class because they should otherwise jut be breaking rocks somewhere or at a military school - you know the types I mean :)
thoroughly enjoyed the fundamentals of electronics :)
Very intressting, thank you from Sweden.
Lovely jingle and beautiful workshop
Great video. I would remind people that devices use conventional current flow In symbology for example the arrow in the transistor points in the direction of conventional current and not electron current.
Using your video about the lidar I made a sensor for a photographer that wants to take pictures of bats, and it was easy! The first time I used a lidar and Arduino!
Exactly what I've been looking for, thank you 👍
Lookin g forward to AC VIDEO. This is a great video. Your a top grade teacher!