Arduino: Use a Button to Toggle an LED

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In this Arduino Tutorial we cover the basics of having a photoresistor (light sensor) activate (or trigger) an LED!

00:00 - Intro
00:11 - Concept
00:29 - What you need
00:45 - Hardware build
02:20 - Software configuration
03:56 - Completed project
04:14 - More at TheGeekPub!

Detailed article with wiring diagrams and code examples:

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[fahtfakcarl]

your code has clear logic and makes sense, thank you

[TinyMaths]

I honestly feel it might be a good idea for me to learn some basic electronics, because I've spent the last several hours stuck on a problem with push buttons on the ESP32, only to realize it was a simple oversight. Currently working on a Rubik cube solver using JavaScript but sending the solution to the ESP32 for the cube rotations (using servos), so I'm ok on the programming side; but clueless on the electronics side. That one problem really exposed my lack of knowledge. I guess a bit of education in this area can't do any harm.

Anyway, thanks for the tutorial, very clear. And, I'm liking that cable management.

[Linrox]

Love the video. Can you show how you would change the code for multiple buttons/toggles each with their own led.

[wandersonsilva-fxcs]

Mr. Thanks for your explanation, I learned a lot. One question, how could I do this using an LDR sensor instead of the button? example: when lighting the ldr, turn on the led, the led will stay on until I light it up again to turn off the led.

[techtinkerin]

This is good, but the led in your video appears to turn on or off when the button is released? How do you make it so it's when it's pressed?

[anokhautomation]

Can you post the same project with pic microcontroller??

[xdmcreamysickalien]

can this also be achieved with a normal on/off button?

[reaperofsouls]

When I press the button and try turning it back on it stays off

[robertnett]

Would there be an issue with the code you provided and another microcontroller - say an Arduino Nano 328 in my case?

I am an absolute beginner - literally started tinkering around yesterday after a bit of introduction by a friend.

edit: Nevermind. I found the error.

[kursadyilmazoglu]

sorry for rewamping comments 😂

but I reckon that if i push the button without releasing it, the led will not toggle ?

if u confirm, thats gonna gratify me

[moonmatthew]

how can i do it so that i have 2 leds, when i press the button, the first one turns on, the i press it again the first one turns off and the second one turns on, you know what i mean?