Arduino uno Toggle button with led on and off tutorial

Arduino toggle button with an led on and off (no debounce and edge detection yet) will be in the two next video's!

All my code will be available on my Patreon page:

Links:

Arduino Uno Starter Kit (original version)

Arduino Uno Starter Kit (cheap version)

Arduino Uno

Credits:

Music:
Classique - Francis Preve

Thumbnail icon:
arduino by uizin from the Noun Project
push button by Hans from the Noun Project

[abdoubobo]

thank you, please how can i add a multiplexer like cd4051 or 4067 ?

[dundabird]

Didn't work at all. People actually like coding? This shit is nightmarish.

[CisaoVFX]

I wrote a shorter and clear way by watching this video, thanks a lot btw:

if(btnState && !btnStatePrev) ledState = !ledState;

digitalWrite(led, ledState);
btnStatePrev = btnState;

[aimless]

For some reason I have to hold the button in order to make led bright up. really confuse on my own thing.

[roboticsman]

Where is the video when you say next week?

[christianbautch]

Instead of putting an if statement inside of an if statement, couldn't you just have two ands?

[jeremyyang]

why does my led light light up but the button have no use?can anyone help?

[TheDrunkenPL]

Am I right that everytime you runs this code you have to make sure switch is off (int buttonPrevious = Low)? If you turn Arduino on and keep switch to on state then buttonCurrent and buttonPrevious will be both LOW so nothing will really happen, right?

[erikhoffman]

I am looking to incorporate in my project using arduino with 5 buttons to pulse the associated relay
That means that each switch will create a short single output pulse no matter how long the button is pressed
Your help will be greatly appreciated
Many thanks
Erik Hoffman
London, UK

[DiceDriizy]

I'm having troubles controlling a servo this way. Can you help me out?

[epicdarr]

bro thank u so much I was stuck on this problem for hours

[paoloacero]

hello sir how to code if you want to add 2 button option after that toggeled first button sir hope you would help me.

[krispykrem]

What if you want it latch or stay on state unless if its yrigger again to turn off?

[chuckhole]

Toggling a pin can be reduced to one line of code:
digitalWrite(pin, !digitalRead(pin));
And there's no need to keep track of the previous state because an internal register in the processor is already doing that.

[adamfreshwater]

How would you do this but with a specified PWM value?

[yuroon]

Thanks you helped me crack the code! I learned that there is one cycle of the loop where the buttonCurrent and the buttonPrevious are not similar and that is where the switch takes place. Had been struggling with it for 2 days lol

[josephdesuasido]

, thanks asali for your tutorial. It's really good. I did it on my Arduino Uno. Keep a good work. Im waiting for your next tutorial. Mr. Asali can I suggest a video tutorial for timer countdown in a minute and increment time if push the button. thanks a lot.

[ochicascio]

it happens to be easier by counting and analizing pair amount of times pressed:

val=digitalRead(bot);
if(val==HIGH){
cont=cont+1;
Serial.println("BOT UP");
if(cont%2==0){
analogWrite(led, LOW);
}else{
analogWrite(led, HIGH);
}
delay(1000);
}

[lacenaepronta]

Thank you this is for me a perfect example for beginners like me

[leemarc]

hey can u freakin explai n properly especially the void loop thank you'