Arduino Tutorial 31: Using Servo in a Simple Project
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- Опубликовано: 31 июл 2024
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In this video we show you how to build a simple project using a servo and arduino. The project reads a light brightness value, and then creates a visual display with an arrow that points out brightness, ranging from moonlight to full sun. This requires the use of Algebra, and the equation of a line.
You can get the kit I am using for this series at the following link:
amzn.to/2I7N4Ek
Also, you can get nicer servos than the ones in the Elegoo kit here. These are the good ones I use in most of my projects.
amzn.to/2Ix8ATa
Follow along on our WEB site:
toptechboy.com/arduino-tutori...
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#Arduino 
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The "math" part is really important. Keep showing it!
yeah
Yes
@@jurgenbaert8197 Yes, Same here
Easy math but it works perfectly
the most important
Hello, Mr. Mcwhorter! I just wanted to tell you that in my entire life I´ve never got excited when someone tell me "This is the homework/assigment for today" but you are the first person in all the world which make it happen. After just some minutes I did the "homework" before watching this video and I just got a lot of fun doing it. I even tricked my dad make him think that I was controlling the servo motor rotating the lamp that I have in my desk before telling him that it was the light produced by the lamp which made it move and the angulation of the lamp made the photoresistor get more or less light (which to the servo was translated to rotation degrees) depending of the rotation. Thank you! Mr. McWhorter. I could say that these are the best videos in all youtube.
I did the math and I also added "if" statements after calculating the angle so that it would for sure stay within the range of my servo (15 to 165 degrees) in case the lightVal was higher or lower than my x values I used to find the slope.
me too :)
Same :)
Same here(❁´◡`❁)
Me too :)
Me too
Hello Paul. I did the assignment and it works. I'm so happy and proud about it. Thank You for Your lessons. Three weeks ago I did not know anything about the Arduino and now I develop to a little expert. You are a great teacher and I am really happy that I have found these tutorial on RUclips. Please keep on with this series (y)
I've been following this series since lesson one, and I have never been so engaged in doing homework!
Half the time I make my code more complicated than it needs to be, and have a good chuckle when you show how easy it is. This one was actually pretty easy in relation to the button switch. I appreciate the need to brush up on my algebra, as it has been far too long! Thank you for your time and knowledge!
I have really enjoyed the progression from dimmable LEDS to moving the servo based on light intensity. What I have found informative is the development of a program. Apart from trouble shooting testing each section and then going on to the next has made a big difference to my designing my own programs. Thanks for step by step tuition. I am learning every time. Boom! My projects are starting to work with far less frustration.
This is amazing man, im 2 years in to my mechatronics engenieering major here in Mexico and this videos help me to rembeber the basics! Thanks a lot!
AM GLAD WE ARE BOTH MECHATRONICS ENGINEERS WATCHING THESE VIDS...
I started watching your tutorials about a week ago when I finally ordered the kit; so I'm late but catching up! I did the homework with no issues. Used knowledge and skills that I gained from your previous tutorials =)
Hallo Paul, you are a great teacher. I was sitting next to a programmer the end of the ‘90’s. We were programming 8086 technology under DOS and Assembler. Love your videos, always learning again too. Thank you, you explain really well, and it doesn’t take long before you correct yourself. Great!
Thank you for another great session Paul. I did on my own, using the math, and then added a RGB LED to display green for bright, blue for dull and red for dark. I then used the map command to get the angle. I'm enjoying your videos.Ian.
the homework was a success. servo was responding to available light quite nicely. thank you for all of your hard work putting these videos together.
I learned a lot from this project. I got much of the coding but for thoughtless errors and syntax. Looking forward to more. Thanks so much!
Hello Paul. I did the assignment and I also added an if statement to print out the weather based on the angle value. thanks very much for your time. 💯
I did the assignment too. I can't begin to tell you how much I really appreciate you doing this to help us all learn. I'm an old guy and retired recently and i'm a 2nd time watcher of your Arduino videos. I started out about 7 or so years ago with Arduinos and learned a great deal from all of your older series. I got away from microcontrollers and microcomputers while I pursued 3d printing and laser engraving for a few years. My electronics bench has been calling me for the last few months so, when I needed a refresher, I knew to look back to you and I'm very pleased that you've got a new series!
That said, I cheated a little on the assignment. I didn't forget everything I learned from my Arduino past. I remembered the "map" function and mapped the analog read from the LDR to the values of my servo's range (senseVal= map(analogRead(sensePin),0,1023,0,175);). The sketch works great and I owe it to you for being able to get me back into the coding saddle!
I see you also have a new Python series too!. I'm going to get into that one soon and I know that I'll benefit from both of these great video sets. YOU ROCK! Thanks again!
I commented on the previous video that I did the homework, so before getting to this video. The maths is very straightforward once you've practiced it a few times. The more projects that depend on doing it, the easier it becomes. It's far easier than working out the more abstract logic that needs to be applied in coding. That's where I struggle!
Thank you for this excellent series! I've learned far more coding and building simple circuits in the past two or three weeks than in all my previous efforts in either!
On to the next lessons!
The maths and deeper theory is super insightful and a valuable part of the lesson... please DO keep that side of your excellent tutorials in place. Thank you for such an amazing series. I've bought the elegoo 'most complete' version of the arduino kit and am following your guidance closely... 🇬🇧
i did the assignment. it works!!!! i probably didn't do it the way you would have but i'm proud that i actually made it work.
I did the assignment and it works. I using if statements. Thank You for Your lessons. you are a great teacher and I have never attended a course like these. I love it.
I am loving this videos, I honestly feel like I'm actually learning how to do what I want with the Arduino and not just following along, I did the math and got the photo resistor working with the servo before watching this video. Thanks for all your hard work, I'm very much enjoying getting a deeper understanding of how the code is working through the math.
You can do it!
Looked back on some previous work and got it to function nicely! I even attached my own arrow and made a back board that attached to the servo to show if it was day or night! Can't wait to catch up to the most current arduino videos
Did the math and project before I watched you do the project and it worked. It's lots of fun and am really enjoying the series.
Thank you so much Paul, I did the homework and I'm so happy with that. Keep going what you're doing, your videos are so helpful for me!
Paul I've been watching this whole series from the beginning and haven't commented yet but I had to comment this time because I was so proud that I was able to do the math and the homework assignment. Thank you!
I did build the project and coded it to get it to work. I'm not good at math, so I used a series of if loops to set the angle for the servo. Worked just fine. Replaced the if statements with the calculation and of course it worked. Really enjoying these lessons.
Did this on my own and got it right. Math is good, necessary, and important. Thank you for explaining the math behind these projects Mr. McWhorter.
Did it with ease. Finished the code in 10 lines. Thanks Paul
I did the homework !!!
had to go back to remember a few things, it paid of.
Thank you for all the hard work that you put in to your Videos.
Paul, I did this on my own successfully! I also decided to add an RGB LED (from what I learned in that lesson) so the RGB would glow brighter as the room got darker... aka almost a practical application! The very great news is that I had to do 2 different slope calculations, one for the servo and one for the RGB... and I did it, thanks to your excellent teaching! I don't think I can upload a photo, but I did create a little dial face to go on the servo, and did the ping pong ball on the RGB... so I'm very proud of the result. Adding a servo really got me going!
Just as much fun to then watch you do it and see that I did it acceptably!
I did the homework! I really enjoyed doing the math and seeing everything work out! You're really helping me out with being able to overcome obstacles while trying to solve these problems.
i did it like that: angle = lightVal/5.5;
It works almost the same way.
Paul, your lessons are amazing. You are a great teacher!
i did the homework in like 10 mins thank you for explaining it the way you did and also you liked my comment from the last vid i watched adn that made my day. you actually care about your audience and it rocks
Dear Paul, I managed to do the assignment. I must say I love your lessons it is teaching me so much in relation to the arduino and brings back so much knowledge thought to be lost for ever :-))).
Keep up this great work.
This was a great project! I was able to set up my board before you showed the video. I really appreciate the math because it helps me understand how it works. Thank you so much!
Thank you very much, Paul! I'm doing here both the math and the programming. Learning a lot, with great pleasure. Not young anymore, 53, but Arduino is a great tool. :)
I did the homework :) Worked out great, put IF statements to limit the servo no less than 10, and no higher than 170. Thank You for your wonderful tutorials!!!!!!!!!!!
I did it myself....feeling soooooo happy .Great thanks for all the previous lessons
Did the homework before watching this video. I had to troubleshoot a bit as I kept using the wrong coding to write the position to the servo, but finally figured it out! Thank you for the great lessons!
Once again I got my homework done without cheating. My math was a bit crude but I referred to some of the older projects and got it all to go. the arm swings right as the light goes out and left as it gets brighter. Mission accomplished. Another satisfied customer. :)
I did the math by myself. I had to fix it after watching because I switched light with dark weather. I really love the fact that you explain the math and science behind engineering. It makes my education feel useful. Thanks Paul!
Great job!
I had to follow along with you as I struggle with the math on my own , thanks for teaching me Mr McWhorter !
I did the homework and please don't stop your lessons they are amazing
I got this one working prior watching any of lesson 31. The code was easily created by referencing a few other lessons. The math is pretty easy at this point. No complaints from me.
Enjoyable lesson, seeing all of the previous lessons come together is very rewarding.
Great assignment. I enjoyed doing this. Keep up your excellent work you are a great teacher. Thank you Paul!
You are doing such a service!! Thank you so much for being such a wonderful teacher. Your style of teaching is perfect for me; the way you explain not only what, but how and why, the way you repeat important points and even important points from previous videos. Really helps to job my memory. I always do the homework and I love doing it, it works out for me 95% of the time but that toggle switch a few episode back had me struggling. You sir have a gift for teaching
I was able to do the homework, and am amazed how much I have learned in this series so far. I can't wait to continue watching the rest of your videos and incorporate Python/AI with the Arduino!
Great to hear!
I was able to figure this out based on the math you taught me in previous lessons! Many thanks!
I did the homework (and the math) and it works!...even got an "oooo, ahhhh, from my son in systems design engineering! Used a potentiometer in place of the 5000 ohm fixed resistor so I can adjust the sensitivity to light / darkness. Thanks for another great lesson.
i am just watching at work, but will attempt on my own when I get home. Great tutorials, keep up the good work - Nano
Thnx to your simple and clear explanations, I am able to do the tasks that you assign on my own. Some might take a bit longer but it gets done! thnx for making these videos!!
Hi Paul !!
I did my homework and it worked perfectly! BOOM!!!
Really happy about finding this new hobby. It is interesting and useful, and so much fun!
planning on doing all of the arduino tutorials for sure!
Thank you for the lesson Paul! I did manage to do the homework before watching the video; it went pretty smoothly for me thankfully :)
Paul your videos are phenomenal! I bought the super starter kit BEFORE I found out about your tutorials and just happened to find your videos! I had some trouble during lesson 13 because the potentiometer that came with my kit doesn't get a stable connection with the bread board and my LED seemed to be turning on and off at random, even when I removed the potentiometer entirely. I came to find out it's called "floating pin" voltage/signal. I thought "how in the world could a toggle switch or push button work with the arduino if an activated pin hooked up to an open circuit can be randomly triggered by floating pin signal???" then later in your series you explained pull up and pull down resistors and it all made sense! I really hope you do a tutorial on shift registers! Nobody else I've found has been able to present all this information in such an easy to follow way! Keep it up, paul! Big fan!
I am happy to say that, thanks to your wonderful tutorials and teaching style, I completed the assignment by my self! And it worked on my first try! Thank you so much for having this high quality and accessible technology education available to students.
Wonderful!
I got the assignment working before this video, Thank you paul you're amazing!
Did my homework from lesson 30. Figured it out with the lessons before. Thanks for giving great lessons. Was good figuring the math behind it as well. Cheated and used the serial monitor to make sure my math was correct before adding the servo to the mix. Thanks for doing these videos. Confidence is improving.
Did the homework! Servos are my favourite component so far.
Most excellent! When I did the homework, i had the the light resistor and photo resistor the other way round so the polarity was reversed. This meant the slope was positive, which made the math much more simple.
Hello Paul, you are indeed great Teacher since when I started following your videos here, I've been improving day by day, I've done my assignment but different way I used two if statement and it works
Great job!
Hi Paul! I paused the last video and did the assignment BooM!! It worked, Thanks for your efforts!
Excellent!
Thank you Mr Paul my math for this one turned out different managed to get it to work but after watching your example. It made more sense. Thank you.
Hey Paul! My entire class is using your tutorials to learn arduino and we love it! We’ve learn so much and the math is so helpful❤❤
Nice work!
Homework completed, this one was way easier than the previous two, since there were no "new" logic involved. I'm about to make a "useless box" as a birthday present for my friend, and writing the program now won't be a challenge. Assembling it is another topic, but I'm pretty sure it'll be neat. Thank you again for all these content! :)
you are an extraordinary teacher. you show me so many things I don't know
Hi Paul. I did the homework, drew the curve, derived the equations, wrote the code, and it works! That was a pretty cool example to work through.
Thanks again for these lessons!
Fantastic!
Thanks Paul. I did the assignment on my own. Took me a while to figure out how to connect both the photoresistor and the servo to the 5V power supply.
I am math challenged so I really appreciate that you have especially emphasized the line-slope equation for the last several sessions. I have made it a point to do the assignments ahead of time and work through the line equations prior to your explanation. I think it has finally soaked into my brain. Sure it would be simple enough to use the map() function but the Aha! moments are so much more rewarding. I am surprised that an engineer like yourself didn't go into much detail about how servos work. But I guess there's only so much information you can pack into all this.
I did it by using information from Tutorial 26. Most of the information is there. I was really interested because I am working on a project that will include a mechanism for tracking the sun for a solar panel robotic system. Loved the Tutorial! Thank you very much Sir!
wow first time in YEARS i am not afraid or discouraged to tackle math and it make sense! i have always been an "I hate math" kind of guy but here we are making it practical and it is changing my opinion. thank you
Another great instructional video that covers in important part of servo programming. Keep the math coming because you really need to know it if you want to create original and innovative circuits.
doing math is bringing me back to high school. this is homework I love to do. so many projects I want to build and you are giving me the understanding of how it works not just that it does.
I was able to complete the assignment before watching the video. I really liked your drawing! Thanks for another wonderful lesson!
Great job!
I finished the project. I really love your videos!
thanks a lot Paul for this series I really love it and enjoy it .. Booom thank you keep going
I was able to do the assignment on my own, with a little review from my notes. I realize you are now done with the video series but I am glad you don’t listen to the complainers and keep showing the math and being in depth with your explanations. Very helpful. I was telling my dad about your videos and he made a good point. He said some people are really smart but can’t teach. You sir are very smart and do a wonderful job teaching. Thank you for sharing your knowledge.
Great job!
I coded this and had it working prior to watching, and I added variables for the servo's min and max angles, as well as the min and max light readings, then made the arduino do the math for me. using this line
Servo_Angle=(Position_Val_Max/Light_Val_Max)*Light_Val;
Thanks again for shooting these videos
I did the home work assignment. I'm happy to say i got working. Im patting myself on the back.( but i did have to go back to see certain things make sure i was correct) so far this arduino tutorial is great. Im 4 years later and almost 40years old still learning new things. This is awesome. Thank you for what you did for us. Sry i dont comment very often but i felt i needed to this time.
Great job!
Did the homework, worked great. Thanks for the great content you are providing!
Very cool, just stumbled across the site, didn't have a clue on the math, until you showed me. Great Teacher. Now, I will do the project.
Loved the math, and the concepts were so clearly explained. Want to make a solar tracker now. Thanks.
I also did the math with a limit on how far it can go, works perfectly.
keep making amazing lessons!
Boom! Great Lesson!!! Keeps me so hooked every time!
Love the video. Did it prior to video. Knew it was going to be a rise over run equation. Looking forward to more in you Arduino series. And yes please more MATH.
Good videos mate I’m only 11 and I now have a head start thanks mate for this series
I did the homework and got it to work :). Thanks for all the great content!
I love mathematics. I love computers. This series is wonderful. I want to add that engineering mindset. I'm starting to love the physical computing/robotics side. Controllers-->Actuators-->Environment-->Sensors--Controllers-->etc. This loop is great to think about.
Thank you!
Excellent job, love the math. First time of given a purpose on how to use it. Thank You Paul!
After I left the delay statements out, the movements were very smooth and it was fun to watch as I moved my hand around the photoresistor like a conductor
I'm a bit proud of myself. I was able to not only finish the assignment, but I also wrote a code that set up the min~max photoresistor value by itself depending on the light level.
whenever the code detects a smaller min value or larger max value, it will rewrite the minmax photoresistor value.
being able to start utilizing the knowledge that I learnt from your previous tutorial feels really great. can't wait to finish all the tutorial.
Great idea.
Any chance of sharing the solution to this please?
Amazing video Paul...love the math too, very cool application
Hello, Paul!
I did the homework on my own))
Thanks for tutorials, they are amazing :)
Did it my way. Finally figured out the math. I had a positive slope and it worked out great. Thanks!
I did the math (following a refresher on linear equations, as I haven't done them for 35 years!). Project worked great!
Loving the videos. Followed through and it works great.
Great to hear!
Yes, I did the math ahead of lesson 31 and I got my servo working with the photo cell light value. Fun project. I love how you apply math principles to programing for that is the real world.
Most excellent!!! Keep them coming Paul. Learning lots and enjoying them all, and the challenge of "homework"
I had to do the math with you because I didn't do the HW correctly. I only made my servo do sunny and dark. I didn't pay attention to the ending of the last lesson. I will do better lol and pay more attention to you near the end, I just get so excited that what we did during the tutorial worked. Keep doing the math, the electrical diagrams, and everything else that shows us the how and the why!
I did it my own. Boom, hats off to you sir.
Hi Paul i did the assignment and to do a little troubleshooting but i got it working so happy, I am learning how to troubleshoot these circuits Thanks
I enjoyed this assignment! I tried the servo code then copied and added it to the light detector circuit that sets the red and green LEDs and buzzes with the change in light condition.... My favourite part was determining the equation of the required angle with respect to the read value of the light resistance.
Did the math before I watched the video. I got it just like you. This is giving me so many ideas. Thank you very much.