Arduino Tutorial 9: Understanding Ohm's Law and Simple Circuit Design
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- Опубликовано: 18 авг 2024
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As you begin to do more advanced arduino projects, you really need to know how to analyze simple circuits. In this video we explain Ohm's Law, and show how to do simple circuit analysis for series connected circuits.
You can pick up an improved version of my Digital Volt Meter Here:
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You can get the following Elegoo kit, to follow these lessons and play along at home
amzn.to/3c9SJrO
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#Arduino 
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Ran out of Netflix to binge. Suddenly I'm on my 9th cup of coffee.
yo chill
I felt this comment in my bones. Currently on my third and not regretting it at all. (Takes another sip)
You are tired on being a consumer and want to become a producer!
One of Best comments
lol
"Am I boring you?"
If we're still with you by 28:40, do you really need to ask? ;-)
Excellent series, teaching me many of the very basics of electronics I wish I'd had decades ago!
Exactly !!!
Agree
Agree!
The series is wonderful I've been enjoying every bit of information you tell us in these videos :) and no it's not boring at all, in fact you are pre answering all the questions I write down as I'm watching.
very true!
When you explain the theory / engineering behind the operation of things it is not boring, that is one of the many things I like about you. Some might perceive it as rambling but it is hard to find someone that will explain things in great detail/depth at the exact moment it applies to the lesson. Thank you!
this is important too because its so much more memorable and interesting than sitting through entire theory lectures before seeing any application, and when you finally get to the application, you've forgotten the theory!
@@Wadlebutt Not only is it more memorable, learning/Knowing the theory is essential to understanding the workings which will allow you to design a circuit that will achieve the goal you set for it..
i just came here to learn how to code 😭 but it’s good to know in depth what i’m doing 😩
Hi Paul, I am enjoying your tutorials immensely. My question is can you have one led for a period of about 5 seconds on and have another flashing at the same time?
Totally agree with you ! Paul makes the theory interesting and logical. A refreshing change ....
Hey Paul, I love that you're spending time explaining these theories. You're not boring me at all.
Are you boring us? Nooo! You're just perfect! The way you teach Paul, missing stuff intentionally to highlight the mistakes, getting more into the physics behind it, and explaining the importance of relevant topics in such a simple way is just perfect. I like many others, thank you from bottom of my heart
yes i like that to build it wrong with us and then fix it with us without even knowing its a very good way to feel like were doing it together
I've learned more from your channel about engineering than I have so far in a year of University.☺️
true that
Nice to know - for people not attending university in foreseeable future.
I can't agree more! I I feel like I got cheated with my school after watching this.
They really skimped out on the details. I worked with an Arduino BRIEFLY near the end of my introductory engineering course, although I have learned a lot more about circuit analysis, just lacking the application right now.
He’s a great instructor and these videos are awesome. However, this is much more granular than a proper 4 year engineering course is. The whole point of an engineering degree is to lay the basic foundation and teach you to work through complex situations.
I do remember feeling the same way, but looking at my degree in the rear view I understand now that I learned a whooooole lot more than I thought I was at the time.
It's not boring. I like it that you go a little into the science and math behind the electronics
You are not boring at all! Instead, you avoid superficiality, which is what really makes us feel bored. Keep it up!
Oh wow, I realized you began finishing the video and I didn't even realize 30 minutes passed. Paul, you have an amazing way to capture not just mine, but everyone attention and hold it for prolonged periods of time--I could never get bored listening to you.
wait that was a 30 mins video??? I thought, even while browsing the comments here that it was a 10 minute video... time flies when youre having fun.
Hey Paul, I see a lot of older people thanking you in your comments section but I just want to let you know that a lot of younger people also watch, and thrive from, your videos. So without further adieu, I would like to say a massive THANK YOU for everything you are teaching us.
The more in-depth explanations are not boring at all and much appreciated!
Thank you,, don’t feel like a parrot just typing code and not understanding the reason behind.
This tutorials is the best
Paul, I am 63 and I'm learning stuff I wish I'd known about years ago, thanks so much for taking the time to do all this, it Is appreciated...
A sincere comment from me, i've completely falling in love with your tutorials. You are not boring in any way, your lessons are jaunty. thanks A lot paul
The fact that you touch on the theory before doing anything practical is the RIGHT way. We appreciate the way you teach us all. Thank you.
I cannot stop watching these. I started at 1 and here I am at 9. I have a basic understanding, but I have re-learned important info in every video. Great stuff!
Great job!
Honestly, thank you so much. I can now understand and interpret circuits based on the skills you've given me. Give a man a single fish and he has food for one day, teach a man to fish....I think we all know the rest. I wanted to ensure you knew how much your knowledge was appreciated for purely the time taken out of your schedule to create these videos. On behalf, of all us out here trying to better ourselves. Thank you.
kind regards
Alex
Teach a man to fish....and he’ll startup a Bubba Gump Shrimp Company
Seriously amazing videos. You remind me of my favorite high school teacher. He didn't just teach us physics and say "This is what you do". He went in to detail and explained WHY you do it that way, and HOW it works. He's the teacher that really made things click for me, and even now, 21 years after the fact, I still look back on him fondly and thank him for what he did.
Wow, thanks!
its absolutely not boring when u tell physics behind it.....it refreshes what we learnt and how it is applied in real application....tq
thank you for all that you do Mr. Mcwhorter. This series has done wonders to my perception of electronics, so much so that I literally went to pull out old tech I was throwing away just to scrap them for parts. not only has your knowledge given me a new way of thinking, its also made me realize the worth and innerworkings of the tech around me.
I felt kinda sad when he said,"I won't always be here for you." Its not very often you find such gem of a teacher on youtube.
He cares for his viewers, in turn most of us got sad when he said that. Genuine words man
Love the videos, I’m 60 years old and this takes me back to my childhood; has rekindled the fire!
(Still scares the bejeez out of me when that hairy forearm shoots across the screen in closeup though....)
Even though I have been working with electronics for 53 years it never hurts to review the basics. Thanks, Paul!
You bet!
Stop asking about the boredom this is great! Keep up the great work!
Excellent. Completely understandable. I’m trying to imagine how much troubleshooting I would have ended up with in projects if I thought voltage was actually being set to a value. The mention of capacitors was very valuable.
So I’m very new and have followed you from lesson 1. It’s really starting to make sense and you step by step walk through are awesome. I was impressed with the homework of things like making binary led lights count to 15, blew my mind how quickly I started to grasp it. Now onto analog sections, absolutely brilliant and to be able understand what the components actually do is opening my mind. Thank you.. I’ll be doing more learning tomorrow and can’t wait until it falls naturally in place.
Very easy explanation about series circuit. Easy analysis about Ohms law. Your teaching style has an attraction. I do not want miss your single word. Thanks for sharing.
I'm an E&I guy and I'm enjoying the memories of these lessons....keep up the good work!
Thanks, will do!
You are totally terrific Paul. I cant thank you enough for taking out time to help so many of us. I have learnt so much from you.
Hey Paul I like the engineering, this lesson, and physics, lesson 2 on LCDs. Copying circuits is ok, even enjoyable but the engineering and science details are equally important. It's nice to get under the "Hood" of the vehicle.and look ariund. Please keep it up . Also, I am getting notifications from RUclips.
Thank you so much for the lessons so far!
You can't get bored of your classes.
I am a deaf student of yours (I was born deaf) and your videos are accompanied by automatic translation so I am very lucky to have you! :-)
thanks again!
Nothing boring about your lessons!
I am so glad you're covering this. I had all of this down decades ago in high school, but I needed a serious review of it because I haven't done anything that would use this knowledge until I started following your lessons. I also was going to comment that you should go over this because anyone following along really needs to understand this if they want to design their own projects. Great to see lessons on this.
Would love to see an advanced robotics course, would even pay for it
I am thoroughly enjoying the lessons, entertaining and instructive, far from being boring.
Excellent. Challenging and engaging enough to keep me interested, manageable enough not to discourage. A fabulous resource. Thank you.
Glad it was helpful!
I’m really enjoying this series of tutorials!!! I have two uno’s and a nano and I love to tinker with stuff like this. My late father was a whizz with electronics and I wish I could have learned more from him when he was alive... great stuff, you are a very good teacher...
The reason I believe your measurements were off, is because the resistors were not precise enough. If you factor in the tolerance values. your measured results would make sense. your calculation were based on ideal rather than real values. you have to get the real values of everything voltage, R1, and R2 ( leads not included, unless you want to be ultra precise)
I don't have the resistors labeled. So I measured them to find the 330R. I was lucky as it was the first I tested, it was 327 Ohms.
Hey Paul! Nurse here with zero engineering in his background, only a good amount of passion for creating and curiosity From a person who knows nothing about this field, I have nothing but positive feedback. Easy to follow and through enough to really introduce the study to a noob the right way.
As a former Physics teacher I must confess your instructional style is very easy to follow and well planned and designed. Just started with learning to program "Arduino" and your lessons are excellent
Wow, really appreciate that, thanks for the kind words.
Sir pls make mosfet tutorial
Muhammad Ali - Agreed!
Not at all, please keep it up. Actually it's intresting
It's August 2021, under covid lockdown. An architect with no prior education or knowledge on electronics and coding stumbles upon a great series about Arduino. I just ordered my first Arduino kit, I'm gonna build myself a robot. Great teacher, great videos, great series. Keep it up sir.
One of the best teachers I have ever had.... Love your explanation and your video quality with you zooming in on circuits ...
I have wanted to try many projects with arduino but found it intimidating. Many people just told me " you will find code for that". I knew I would find it intensely frustrating if something didn't work and I had no idea how it was built.
Understanding the circuits makes them WAY easier to build too.
You have demystified arduino for me and I have found I am looking forward to the next tutorial and making sure I carve time out of my day to do it.
Thank you.
not boring me in the slightest. thank you so much for putting all of this information together and uploading it for all the world to see. also id like to say you are a fantastic teacher. everything you teach just has a way of sticking with me. again, thank you
Glad you enjoyed it!
This is where I got lost in electronics and I will revisit this many times. Just like anything else if you don't understand the foundation, the rest makes no sense. Thank you for backing up to the basics so I can go forward now.
You are not boring at all, I really enjoy your lessons. I have learned more than one semester of intro to embedded systems in college.
Great to hear!
i dont find your lesson videos rambling or waste of time,every second of it are so informative and fun to follow,you deserve a medal Paul
This is one video I've come back to rewatch twice now. Paul's deep dives into the mathematical computations and formulas behind the Arduino are nothing short of invaluable!!! I'll admit that when I first watch such lessons, they are a lot to process and fully grasp. My recommendation is to keep watching all the way through anyway, even if you feel a little lost. I take in as much as I can the first time, then return to watch again after proceeding to the next couple of lessons and it helps make it all come together for me
I am currently in my last year of undergraduate schooling for mechanical engineering and plan to head abroad to get my masters. Although my university never had us go through an Arduino class and the only formal coding education I have is in MATLAB, you've made your videos incredibly easy to follow and I really appreciate it as someone who is getting to the point in their education where the understanding of microcontrollers is becoming more and more relevant. So thank you for picking up the my University's slack!
"Am I boring you?" Some times when you start to explain something I feel like Im about to be very bored and everytime you explain something I learn it because I was able to stay engaged while you taught it. Love it.
I've got ADHD and Dyslexia, I'm really enjoying your videos and think your a great teacher. I am fighting the creative hands on animal inside me when your talking theory and really want the practical satisfaction of seeing the circuit do some work like turn on an led or move a motor. I'm old enough to muster the patience to listen and understand the theory and look at a circuit that isn't doing anything visible but for many with the creativity gift (not disability) their attention may switch off thanless they can see something physically happening doing something interesting that they made happen using your guidance. Loving this series of lessons it's helping me on my path to build a micro automation factory. Cheers J
mr mcwhorter you are no teacher or professor,u r the god of arduino and other stuffs!!!!!!!!!
I want to pursue engineering when I grow up and your videos are helping me achieve my goal. Thank you so much!
You can do it!
Just an interesting note about Ohm's law from Nikola Tesla. He was on the understanding that Ohm's Law would only hold true until the point that you frequency matched the electrical current with the object to which the electricity is flowing through.
This was most apparent in a letter which was written to Nikola about a coil design to which someone else had made. "I followed your instructions on how to wind the coil exactly as you had described, and yet no matter what, I'm not able to attain the power outputs that you've seen in your experiments."
I've always found it interesting that no one has looked into this further, especially when doing any form of foundry work, as we know that just by placing sand on a plate and playing different frequencies you end up with the sand forming different patterns.
Just some food for thought :)
You are an incredible teacher. You grab my attention every second. Not 1 teacher has ever been able to interest me for more than 5 min. I am excited to go through all your content. You brought light to my life and also excitement. Thank you!
I love the deeper explanation of things. From the physics to the engineering, it helps place this knowledge in the real world.
I think this series augments the first series of Arduino tutorials. Anyone that's watching this series should strongly consider watching the first series too. I've found every episode interesting and informative. I'm designing a model railway signalling system that utilises Arduinos as well as CMOS logic gates (separately and in conjunction) and these tutorials have been invaluable in helping me produce the system.
I feel like the first series was a little more focussed on programming, and this one a little more on hardware. This time we make things, and then learn the coding needed to get the things to do what we want. I do think the old series is useful, and compliments what we are doing here.
I’m 56 years old and know very little about electronics. Having retired due to health reasons I’m absolutely loving this . You’re explaining of it all is excellent although using to the power of 3 on the calculator went straight over my head. Keep up the great work 👏👏👏👏
Hey Paul! I just HAD to put in this comment when i heard you say "Am I boring you?"
You make these concepts so interesting the way you teach them to us with the ins and outs. My uncle sent me your channel when I told him that I'm starting to develop and interest in such things and I want you to know that I'm really grateful to find this channel. You've really help me keep and build on that curiosity and enthusiasm. You're such a cool and fun teacher :)
I am 80 years old and am taking this course for fun. At one point in my career, I taught programming to college freshmen. Take it from me Paul is the best.
Great video! I love that you don't just say what to do for us to copy but make us understand the physics behind it. I personally find that is really important, and that is what puts theese videos on another level. Thank you for the lesson!
I start recently with Arduino, electronics and coding. I never did anything before and I was going a little blind until I find your tutorial series. I think is a great job and understand this basis give me the tools for complete my project and not just copy the code or project that a find in internet. Thanks a lot because this give me the possibilities to walk with my legs!!!! and you are not boring!!! Have a nice day!!!
That is awesome!
I am 66 year old woman and I am loving this Arduino course. Wish you could have been my teacher, back in the day.
So much better than monkey see monkey do.
Wonderful!
I am up to lesson 10 now of the things I need to learn (Skipped the few that I already new about). Just like to say that your videos are excellent, I have gained a lot of knowledge so far and love the in-depth but easy to understand explanations of the topics covered. I will be continuing my education with the remaining lessons over the next few weeks then I'm moving on to your other tutorials. Thanks you for all your efforts.
Another great video. It was a pleasure to listen to someone talking about current flow theory instead of electron flow. Back in the 60's when I was just getting into electronics and building tube driven ham gear, everything that talked about electronics in books used current flow to describe how everything worked. On schematics, you just followed positive to negative through the arrows when it came to semiconductors and life was good. When I went into USAF tech school in 73, they taught electron flow and it made it a lot harder to follow. Even so, please keep up the highly detailed instruction on how this all works. Even old timers like myself can use a bit of refresher courses on the subject. On your issue with the lower voltage, I too had almost the same reading. I blame it on the voltage output sent through the USB cable and not the Arduino because when I checked using the provided external power supply, (a wallwart), the voltage jumped up to 5.1. Apparently the device does not change the input power much. Thank you again and I will be looking forward to your next video.
Bob Ross of arduino coding. Happy little circuits. Very good teaching strategy, very laid back and easy to understand for the novice (me) thank goodness for this dude!
Hi Paul, you’re better than any teacher and professors I’ve ever had. Thanks for your work
No, we are not getting bored at all, thank you so much, Paul! really thank you from the bottom of my heart!
"Am i boring you"
no not at all
and you are literally building up my future with these tutorial
I recently retired from work and want to learn about electronics now I have some time. Very much appreciating the detail you input into these tutorials. In no way finding these boring so keep up the great work.
Excellent videos. Not boring at all Paul. I find your methodical style where you constantly encourage students to self reflect on what is going on in the circuit to be highly effective. I'm new to this world of Arduino and feel like I am learning exponentially via your videos. From a teacher to a teacher. Thank you!
Great to hear!
@23:35 You mentioned the 4.86v coming out of the Arduino. In lesson 8, your oscilloscope was measuring about 4.8v. I am not sure if you picked up on that, but it is perfect.
Thank you for your lessons. I am a software engineer, and am learning Arduino and electronics because I am dabbling in Escape Room puzzles. I stumbled upon your lessons a few months ago when I was looking for an education on what and why I am doing what I am. Your lessons have helped bring clarity to the wiring diagrams and code I have purchased, and I have been able to make tweaks to the code and puzzle because of the understanding you have brought.
I look forward to the coming lessons!
I have told other people about your channel as well. Thank you!
This is one of the best series I have found! Also I am 10 years old and this is so much fun!
Congratulations. If you are 10 and already taking these lessons you are going to go far in life.
Paul, I've always wanted to understand electrical circuits as well as coding. Your videos are well organized and provide a practical context to understand both. Thank you!
You're exactly the teacher I needed to get fully into electronics and you have no idea how grateful I am to have found you and these tutorials.. Wishing you the best and sending out good vibes your way 🙏
I like that you are going into the background and the physics of how this stuff works, makes it easier to understand the overall concept.
Not boring at all, great background in getting to understand what is going on.
This guy is so awesome it doesn’t even bother me how he pronounces Elegoo!
As a newbie to electronics ,
This tutorial on oms law and the way you teach it , has made it good enough for me to understand..
Thank you very much for sharing/teaching.
Dear Paul, these are by far the most educational videos on Arduino's that you can find. Boring ?? never !!! Thank you!!
Anyone who is bored can always fast forward. Yours is a unique self deprecating style which is obviously successful. I checked my supply voltage and was at 4.7 VDC. Not sure who may have already mentioned this but I switched to a 110 VAC P/S and it went up to 4.98 VDC
Absolutely phenomenal playlist it is!! Its very rare when you find someone who makes you understand every intricacy of something that too patiently. Cheers to you Sir!!
Wow, thank you!
The engineering part of this lessons is very crucial to not only understanding what is happening but also to understand how you can innovate something of our own - keep it up as its very clear and simple to understand.
The current flow misunderstanding goes back to Benjamin Franklin and the famous kite experiment in a lightning storm. Franklin demonstrated that lightning was electricity by capturing voltage from the lightning storm in a Leyden Jar. He understood there was a current flow, but he got the direction wrong. He had no way of knowing at the time. Franklin established the convention we still use today.
Yes. It makes sense. Very well planned teaching. Coding alone can be abstract. With physics of Ohm's law and demonstration with measurement of multimeter and calculation, it is more easy to understand.
You just put sense into a physics class I had over 20 years ago where I went "what? why?" I wish we had Arduinos and stuff back then.
Paul, I recalculated current with the 4.86v and got a current of 11.3 mamps. R1 of 330 ohms gave me a voltage of 3.73 v and R2 of 100 ohms gave me a voltage of 1.13 v for a total voltage of 4.86 v. Good workout. Manny from Puerto Rico
What a perfect combo!! Just ran into this channel yesterday but already became a fan of you sir!
I've always wanted to do engineering but had horrible teachers in the past but you sir, have made everything so extremely easy to understand. Thank you so much! So happy to be supporting you!
No Sir, this is not boring. Thank You for the excellent lectures.
Absolutely the best explanation of ohms law, I actually understand it now!
Paul, first of all, love your videos. I went to college as a Physics major in the 1980's and then spent 20+ years as a control systems design engineer. Nowadays, as a project manager, I'm a little removed from component level design so I'm going through your tutorials to refresh myself. From what I have seen so far, I wish I had this resource when I was in school. It would have saved me a lot of late nights pouring over textbooks. The only caveat I can think of, is to maybe provide a few references to RUclips videos on the subjects of basic electricity and use of a multimeter for the people who are not familiar with this.
I stayed with you all the way to the end. It is not boring. I did find a few website with a Ohm's calculator and that helped since I do not have a scientific calc. This is something I will understand it more once I start using it.
I got my ham licence when pentodes were the thing. Haven't been active in decades. Best explanation of solid state that I have seen since!
I do truly enjoy the depth of explanation provided in your instruction. Thank you sir.
Mr McWhorter, I really enjoy your clips, just purchased a kit and am working on it with my 8 year od daughter. Love it! Thank you for sharing.
As an Analytical Chemist, yes, this makes sense. Thanks Paul
oh my god i do love your videos so much, i was ass in electronics and skipped so much of my highschool classes, but this, this is gold, and i love watching every single episode of yours, and i dont even care about electronics, i just love how you teach, and me learning this is jsut a bonus. Thank you so much!
Not boring at all! I'm a software engineer by trade and interested in learning more about circuits and electronics so the physics and math is what I need a refresher on way more than the coding