The Simplest Way to Wire a Button to Arduino (with Internal Pull-Up) | Arduino Button Tutorial

This is a tutorial for wiring a button to Arduino. If your wires are short then you don't need to add an external pull-up or pull-down resistor since Arduino has internal pull-up resistors that can be activated in code by calling pinMode(pinNumber, INPUT_PULLUP);

Diagrams and pictures:

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[LPUser_LPDDR-mhz]

Exactly what I was looking for! Most of the other tutorials required resistors but I didn't have space for them, so I tried looking for other tutorials and found this one!

[nickgennady]

Wow, you did this better than anyone else. It's a lot much simpler setup not using 3 wires or resistors.

[MikevomMars]

Finally, someone who explains the SIMPLE and most common way to use pushbuttons - without making it unnecessary complicated 👍

[Mark_Massingill]

Thank you. I'm trying to learn and am working on a project using stepper motors. I want to set things up so that the steppers don't immediately start moving when the arduino is powered up, using an on off switch. Switch on, no movement, switch off, steppers start moving as directed by the code. The switch is basically a pause button. I have the code correct (I think) but wasn't sure how I needed to wire up the switch. This method will be easy to wire into my project, with no breadboard or circuit board required, just short wires from the switch to the arduino.

[naushad.kausar]

Man you're a Genius!!!! You did this better than anyone else. Thanks mate !

[Back-Air]

Thanks a lot. All I needed to know was to write INPUT_PULLUP instead of INPUT

[wege]

That's kinda fun actually that stuff in the world messes with the inputs
Electricity is a truly mysterious and powerful force

[aklstreak]

That is exactly what I was looking for! Thanks a lot! Works like a charm in my project.

[ScaryLasers]

FINALLY LOL simple concise, thank you

[Ambishooter]

Thank you for your explanation. This is a great example!

[mister_octopus]

Is there a way to calculate the value of resistor I need for a long wire to the button? I'm expecting to use about 30ft but may be longer. Its not ideal, but unavoidable for this particular project.

[LevyCarneiro]

Excellent video, exactly what I was looking for. Thanks!

[SantaDragon]

Thanks for tutorial. A electro magneic sealed wire would have worked as well, right?

[ponnalasandeep]

Tq for this video this is what happening in my home automation with arduno with me

[aldomeza-dev]

Is it safe to use 3 buttons without resistors?

[FPChris]

how would you do a button press on an interrupt using the internal pullup?

[adriandalihernandezrueda]

Thanks I see other videos and only u know how to do easy

[MuhammadAwais-jhdy]

I don't underrated like button connected between input and ground please ssay again 😊

[kim_a]

Hello sir!! What will happen if I use long wire cable for input signal? How to fix it?

[tshk]

Great video! If my GND wire is also long does it also need resistors?