Arduino Tutorial 20: Understanding RGB LED's
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- čas přidán 31. 07. 2019
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In this lesson we learn how to control an RGB LED from an arduino. We show how to not only get the primary colors but also how to mix colors on the RBG LED. Enjoy!
You can get the following Elegoo kit, to follow these lessons and play along at home
amzn.to/3c9SJrO
You can follow along on our WEB site at:
toptechboy.com/arduino-tutori...
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#Arduino - Věda a technologie
Remember to have the serial monitor set for "No Line Ending "
Good reminder! On the web based version of the Arduino Editor this setting is at the top left to the left of the baud rate drop down.
wish I had looked at this comment an hour ago!!!!! =-)
I spent like 90 minutes to discover what was wrong; Yes indeed I wish I looked at your comment a bit earlier
Once bitten, twice shy.
fell for this - using VScode as my editor so didn't think to check. Doesn't look like you can change it yet either 🤦♂️
I have been following your tutorials since 2016, and I have never realized until now that you are the person that sparks my curiosity. You teach me computer programming, mathematics, electronics, and the science of how things work. Looking back, I can see how much I know because of you. Paul, you are the greatest teacher I ever have and for that, I just want to say thank you. And I can't wait for the 9-axis sensor tutorial. :)
20 lessons in, and "hook a brother up" still makes me grin from ear to ear. ^o^
Thanks for the shout out for the UK viewers, there seems to be quite a few of us. Keep up the good work PW
Most excellent "behavioUr" for the English spelling!
I made it to tutorial 20! I'm really good about getting excited about something then quickly losing interest. I'm proud of myself! There is nothing more exciting then starting a fresh new lesson (with my black iced coffee) and pulling something new out of my kit! Never thought in a million years I'd be spending my Saturday nights doing something like this but I've never been happier!
EXCELLENT! You are almost 1/3 of the way through the class. Then off course, lots of other videos series on this channel, so plenty to keep you buys.
I can not think of a more fun way to spend Saturday night, and the great thing is you get up Sunday morning feeling great. Keep up the good work.
@@paulmcwhorter exactly on point about feeling great Sunday morning! I’m a recovering alcoholic with 5 years of sobriety so it’s hobbies like this that keep my brain in the right place.
Noticed all your playlists so I’ll have to look into what else I can learn from you. Probably need to hit up your Patreon too!
Ryan, I've tried the RGB LED chapter. I can't get it to work. I know my code is correct. I've also tried switching resistors, RGB LEDs, and rewired my circuit more than a few times. Any suggestions.
@timbrooker8630 maybe i think i had it too u should try to see if the connections are good and olso if u plan to lets say give a certain amount like red 50 do it on a port with the ~ then u can do analogwrite or som and olso try to see if u can light up the individual by instead of puting it on an output but the lead that was to the output to 5v to see if it brightens up or not then u can diagnose and olso maybe your resistor is wrong or not connected properly or maybe u forgot a capital in de code maybe idk
@@FurkanOz480Thank you for help. I have the same problem. Tried all the suggestions, found that the declaration of STRING doesn t change it s color, maybe the syntax is different for the newest version 2.0.3. that i use.
I deeply appreciate the 'u' in 'colour.' More than you could ever know. Thanks, Paul.
"Boom" learned some more. Love the UK shout out with "colour"
Canadians also use the "u" in colour!
Thanks for including us Australians with the spelling of colour. A great series of tutorials.
Im British and enjoying you lessons !!
Hi Paul, thanks for the arduino lessons, I've never had a better teacher !
I am a retired electronics engineer , and enjoy the modern arduino applications ,
thanks to you!
Peter, Belgium
Fantastic!
Same as Peter
For anyone who is working through this most excellent tutorial - please make sure you adjust your Serial input to "No line ending" otherwise the conditional statements here won't fire. Aside from that, this is 10/10 awesome! Thank you Paul McWhorter! :)
I have been banging my head for a day trying to get it to work and this did it thanks
Thankuuuuuuuuu!!!!
Much appreciated. This was driving me crazy
how to do it can you tell me please i am banging my mind from long time
I was having so much trouble getting it to work but I had it on new line all the time, thanks for the tip, it finally worked!!
I have spent two days trying to make this work. My serial monitor wasn’t set to “no line ending” . Now it works!!!
Same, but why ?
@@waitwhat612 you need to set your serial monitor to no line ending
Had a lot of fun with this one, mixing the colours and getting some really nice combinations. I looked up all the RGB colour numbers online. Great stuff, Paul. You De Man!
If you are going to use analogWrite be sure to use a pin port that has a "~" next to it
I thought he was going to play that out in the lesson. He had green and blue in ~ pins and the red one out (in 8). I imagined we'd try purple and then see what happened if we adjusted red. Anyway, that's what I'll try.
thank you, shyt brick
You won't use analog pins
I'm using a Elegoo Mega2560, I don't have the ~ all my digital pins 2-13 are screen printed PWM.
Thanks for the shout out, watching from the UK working my way through this series.
thanks so much, I took a 2 hour class and i didnt understand anything. But i took at 21 minute class from you and i undertsanded more then i ever will with that class.
Hello !
I was very curious to know about this 4-legged LED and I played along with it for a while. I went through the color charts and made CYAN, MAGENTA, YELLOW, WHITE followed by the basic RED , GREEN , BLUE colors. Further out of my curiosity I did a little experiment with 3 potentiometers and the RGB LED. It worked well and I made other beautiful colors such as LAVENDER and ORANGE. Thank you so much for teaching me the fundamentals so well. Blessed to be learning from you!
Nice idea I am going to do it
“Colour” for us Aussies too. Thank you so much for all these tutorials. The absolute best and easiest to follow.
I have been learning all your lessons and doing all the homework so far and it is awesome! I'm from Canada so we use "colour" here. Thanks for all the lessons so far.
I literally loved playing with analogRead commands in RGB. That was freakishly interesting. Thank you Grand Pa!
I had lots of fun on this one. Thank you Mr. Mcwhorter. Great lesson.
RGB BOOM! I decided for my project to use three for loops to make the LED cycle through all the possible colors.
It's pretty nice to watch.
I took a break from Arduino, but I am really happy that I started doing this again. You are the best.
you've done me a great favour by spelling colour courectly. great episode!
No Proublem
I sit and played with these assignment colours... Loved it! Thanks Paul!
Thank you very much for the shout out Paul. I decided to use your parseInt stuff so I could manually set the brightness for my program.
Hi, I also did this however, my blue coluree is way less bright than red and green given the same brightness argument. I tried both RGB leds, swapped current resistors and also swapped pins at the Arduino to no avail. I can try a lessor current resistor but, should I have too??? Any insight would be appreciated!
dhrubes@hotmail.com
I have been following the lessons and BOOM I have a much better understanding of programming. What has helped is the fact that mistakes are made, whether intentional or unintentional, and that is where I have gained the most because so many are similar to what I've done. Thanks for the lively and informative tuition. I am especially looking forward to reading to and from LCDs. I hope that is in the programme.
Thank You for not editing out your errors. More importantly, Thank You for talking out loud while you troubleshoot them. I usually pick something up that I did not know/think of from what you said out loud!
Mr. Paul McWhorter is the best teacher ever! God bless
I absolutely love your tutorials. I’ve been following you all the way up to lesson 20 (that’s where I’m currently at) I’ve been saving all of the sketches we do and once I finally understand what we’re doing. I go in and tweak it and see if I can’t get it to do what I want it to do. I’m gonna start commenting more. The math is very important too.
As a Canadian, I appreciate the spelling of "colour". These tutorials are brilliant btw!
Manitoba represent!
That was a fun homework assignment! Thanks again for the good work you put into these tutorials.
I've been following this series and playing along, I am eager to learn more and I'm having so much fun! You're the best teacher ever!
Hi Mr. Paul ,❣️You From "The India"
Your Videos are really Amazing 😍
me too from india
Age long question "If indian guys teach everything on CZcams, then who teaches indians?" has finaly been answered! It was our best teacher Paul all along!
@@tellder1 True that
@@tellder1 truuu
It just gets easier! I will now read through the comments before each lesson.
A little remark, to people who might have problems with the diode lighting up. In my case I had to change the condition statements (starting with "if") from f.e.: " if (myColour == "red") ", to " if (myColour == "red
") ", because the Arduino IDE had some problems with interpretation of the new line after each question.
Mr. McWorther, your channel was recommended to me by a good friend of mine. I really do love and enjoy your Arduino Tutorial. Please never lose your passion to teaching and your spirit. I am looking forward to watching your future videos ^^.
Thanks for this lesson Paul. Yes here in the UK we do spell colour with the u included. Great course and i'm learning a lot. sometimes have to do the lessons again just to get it to stick in my thick skull. A constant reminder to myself is remember to ensure I put the comments into the sketch so I know exactly why I have done something.
you gave us the best concept about RGB and how to use it with Arduino..Many thanks to you :-)
Hello, fellow Briton. I would just like to say well done to everyone for getting this far in the course and keep up the good work Paul.
Thankyou for a great set of tutorials I had no experience of arduino before this. And I am growing more confident with every Video
I got sloppy on this one and powered a few of the LEDs with digital pins. Some of the colors worked but the ones that needed one to be dimmed did not work right. After putting them all on the analog outputs they worked great. After 20 episodes I'm still here. 48 more to go! These are awesome videos!
G'Day Mate
I am loving the tutorial and especially love how you set homework so we can try and figure things out by our selves in small bites. can't wait to continue through the series you have put together.
Another great lesson. So cool that we can create any color with the RGB LED. Sweet!
As a Canadian thank you for using Colour ;)
I loved being able to play around and get just the color I thought matched the colors asked for, the values suggested online were way off to my eye!. Thanks for the lesson, Paul!
Paul McWorthers teaching is so intriguing that i started the combination of lights even before he mentioned it!
Good lesson. I messed up the brackets after the "if" statements which made a mess of the LEDs lighting up but once I figured that out it worked like a charm. Thanks for a great lesson.
After doing this tutorial. I made a blinking light with different kinds of colours. it was a long code and its all worth it! I'm very happy!
Thanks for the shout out Paul. Totally enjoying your very entertaining and colourful course. From Colchester in the UK
Another Brit here loving the acknowledgment and the Arduino Tutorials in general. Thank you 😁😁
Enjoyed lessons 19 and 20.
Had issues with this once I started adding the extra colors (the assignment). Realized that pin 8 wasn't an analog pin! Once I switched the pins to 9, 10, and 11, everything worked perfectly!! Hope I'm not spoiling the next lesson for anyone!! I also like adding all "case" versions of the word. Silly since it'll just be me typing in the Serial Monitor, but I guess I'm a little OCD too!! HAHA! Another good lesson Paul!!
Thank you soooooo much for your comment! I could not for the life of me figure out why I could not turn on any colour of the LED. Switching pins finally did the trick!
As someone who learned Canadian English, the "colour" spelling was appreciated! Thanks for the tutorial as always.
I can see "new", I can see "improved", but never "new and improved". Can't be done as it is either new or improved. Not both. These are "most excellent" tutorials. Easy to understand and I'm seeing new things and improving my base. Thanks for these.
Added Mauve (RGB 197, 140, 157) Color option because this is such a 'Mauvelous' Arduino Video ... Well Done. Having a lot of fun learning from the Tutorials.
Fantastic! I like the way you transfer your knowledge to the whole world. You are just like a star. Great !
I had a lot of fun creating colours with this one. I used a "while" statement to have the blue and red Led's blink alternatively. Any character sent to serial input turns the blinking off. Thanks for these tutorials.
Thank you for the 'u', like everything else in your lessons it’s very much appreciated. I think I'll solder my first board and keep this one.
Great lesson, it puts into perspective the 255 value(s) of color mixing in most programs.
Thank you @FuNkTOID for pointing out adjust your Serial input to "No line ending" , Spent 3 days trying to figure it out, as well as buying a new Arduino board. After that, everything was good :))
Wow!! I'm loving this, Paul! Thank you!
Cheers Paul, it looks like there's quite a large following from this side of the pond!
Just started watching this series yesterday. I greatly appreciated the "U" in colour! Thanks for the lessons, they've been very helpful for understanding micro-controller code. Cheers from the UK.
Welcome aboard!
Thanks for the colour from Australia too! You're an amazing teacher Paul, having a blast learning Arduino, thanks to you :)
The extent Mr. McWhorter goes to teach us is a delight
Whew... this one went WAY better than lesson 19. I paused the video and went and coded the exercise (I did glance back at the code for 19 a couple of times) and it worked! I even added a fourth if which lets people know if they entered an unavailable color.
Another great video! Can`t wait for the next one!
The last couple videos about user interaction were a lot of fun, but this program is just too much fun, in addition to your assignment I think I'll have to add a few dozen more colors. Thanks and God bless!
Hi Paul, Thanks for the wave to the British :-) Loving the course. Stay safe.
Great stuff once again mate, got your “colour” shout out over here in brit land 🤟🤟🤟
Thank you paul. The joy of learning comes with your videos!
Glad to hear that!
Thanks for the UK shoutout Paul. Loving the course!
This was a nice one, thank you for the mixing of colours.
Glad you liked it!
Hey Paul. You doing a great job. I'm not always logged in. But i'm doing my "homework". and following you step by step..
Just thought about how to make the RGB LED cycle between ROY-G-BIV!
I had problems with it flickering initially, but I realized that it's because I allowed the values to reach zero (off) and then turn back on at full brightness. There's all the colours for you and then some Paul! Thanks for being a great teacher. Without your lessons I probably wouldn't have even thought about how to do this!
int red_pin = 9;
int green_pin = 10;
int blue_pin = 11;
int red_val;
int green_val;
int blue_val;
int delayTime = 5;
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
pinMode(red_pin,OUTPUT);
pinMode(green_pin,OUTPUT);
pinMode(blue_pin,OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
for (red_val == 255; green_val < 255; green_val += 1) {
analogWrite(green_pin,green_val);
delay(delayTime);
}
for (green_val == 255; red_val > 1; red_val -= 1) {
analogWrite(red_pin,red_val);
delay(delayTime);
}
for (red_val == 1; blue_val < 255; blue_val += 1) {
analogWrite(blue_pin,blue_val);
delay(delayTime);
}
for (blue_val == 255; green_val > 1; green_val -= 1) {
analogWrite(green_pin,green_val);
delay(delayTime);
}
for (green_val == 1; red_val < 255; red_val += 1) {
analogWrite(red_pin,red_val);
delay(delayTime);
}
for (red_val == 255; blue_val > 1; blue_val -= 1) {
analogWrite(blue_pin,blue_val);
delay(delayTime);
}
}
I think you could also adjust the max brightness by making it a variable that you adjust with the potentiometer and then making that the initialization and the condition parameters for the for loop, but I'm not sure, going to have to try that in the morning!
“Boom” you did it again, you made my light bulb turn on with RGB or should I say my mental LED? 😁
One of the Best courses in CZcams Ever!
Thank you very much for an amazing lesson! Had so much fun with the ping-pong ball, and when I turned the light off:"Boom!" It looked great!
Changed redPin to ~6.
Assignment is completed, but Orange doesn't look really well, although I checked in the internet.
Looking forward to the next lessons!
Paul when you say Hold your breath and let see and then say, Boom. This is such a exciting moment to catch your excitment to see your magic. I am new. Just begin to learn. I become so excited when you do to us in your every new project. Thank you.
Love it!
This lesson is basically like the last one I just replaced the 3 separate LEDS with the RGB LED. I do not have a small ball like that, I tried using paper and other items but I see where the RGB LED would have uses. Thank you Paul, when I get a ball like that I will come back to this one make different colors.
Omg thank you so much its been driving me insane watching you spell colour as color after so many episodes it started to feel like I'd been spelling it wrong my whole life haha
super excited! My Elegoo kit finally arrived - just in the nic of time as I didn't have an RGB LED in my possession....Kit looks great!
Booming GOOD FUN!! Better than watching table tennis. Love this lecture and how it sustainsso much focus and interest. Love it!!
paused at 2:03
in search of a ping-pong ball...
same
I would move to Texas just to take a class with him. I LOVE THIS SERIES!
Well, I live in Africa now, so you would have to move to Africa.
@@paulmcwhorter I would do that, also that’s really cool!
Paul, I'm sorry, I'm the person that hasn't been holding their breath.
:(
I was looking for you :D
same here, i haven't been holding my breath either
neeer, neener, neener!! me either!!!
Great video.
I have common anode LED for which I was able to use inverted logic.
Thankyou Paul
Yes got the shout out I'm in England UK. THANK YOU Paul
Hi Paul , Kudos to you sir for the English spelling of Color. I have been coding along with you on previous Tutorials and changing the spelling accordingly. I am still enjoying the Tutorials and trying to modify the coding after seeing the videos. Sometimes it works but not always , but it dosen't stop my enthusiasm for the course. Trying to do one video course a day and at least i know if i have to go over something more than once I can just watch the video again. Keep up the Good work Paul you are doing a great job.
This is my second time following along with these videos but i changed up the last lesson and used the RGB LED and i added purple to the color options.
You are a great teacher Mr McWhorter.
I did your homework task, then I created three counters and created a light that changes colour constantly, SO COOL!! Thanks so much, I've made it to Tutorial 20 and I'm still LOVING IT!!!
PS. I got massively caught out by using pins 11, 12 and 13 before realising I needed to use pins 9,10 and 11 with PWM. Thanks so much for your great content Paul!
PWM is your friend!
Thank you for the lesson!
Guys! If the leds aren’t turning on, try turning your serial monitor to no line ending. Hope this helps!
Thanks for liking Paul! I have tried to find tutorials for arduino online for completely new people but there weren’t really any good complete ones until I found yours! Thanks for the help!
? I don't understand that statement. How is this done?
I take it back. I figured it out, and it was the cause for the lights not turning on. Thanks!!!!!
Most Awesome advice!
I did it but it didn't work. I checked all the LEDs and wires and they're fine. I also added println( myColor ) to check my command but when i type "red", the result shows "redred".
i still love the way he says "BOOM"
Hallo , Dear Mr McWhorter ,This is Yoonis from UK. I really like your channel and really learned a lot from your channel. thank you again you made my work life a lot easier.
thx and than you saying Colour
Interesting a Kaleidoscope of colors it'll be a great program. Thanks Paul.
British learner here, appreciate the UK shout out (Canada and NZ do it too tho!), as well as the course in general
Thanks for the tuition Paul from the UK and the correct spelling of Colour 👍