How does a 4x4 keypad work

Those 4x4 keypads are very common and ideal to use with an Arduino. I show you how they work and what are the basics to use it with an Arduino.
Links
Project Page:
rohling-de.blogspot.com/2020/...
4x4 Keypad - amzn.to/2A7p5og
Arduino Uno - amzn.to/3c1iLMl
Breadboard & Jumpercables - amzn.to/3caWE6w
#Maker #Arduino #Keypad

[@lenniefredriksson7283]

Perfect illustration 👍

[@jamesmoon5632]

Thank you for this I needed this so much as other channels wanted to use a library but i needed to alter the code to allow and io expander and use a proper debounce. Now I can code it without code. Well explained Sir…🎉

[@therealcoolc]

Makes perfect sense the way you explained it, thank you.

[@siddharthpatil6825]

thank you so much from India

[@bullygram]

Clearly explained in a nutshell, thank you

[@Jam1neur]

i finally understand this. thanks!

[@sunilkumar-ls2yb]

when i was at college, i tied to understand it many times, but failed every single time and now i am got it in first attempt, Thanks sir

[@brayagruop5716]

best explation of matrix keypad with draw with two color

[@SeptianNugrahahaha]

this very easy to understands

[@nacongamer555]

thank you :)

[@bharadwajn.k9185]

Very usefull. So unique video

[@bananenfratze]

wann kommen hier neue videos

[@ishitaverma6149]

for how long should we iterate through the output pins and provide voltage in order to detect which column key is pressed? should this procedure of reading the column go on forever until the key is pressed?

[@nenioc187]

Good question. Think about how long you need to press a button. In this time you have to go trough all rows AND columns, so you won't miss the press. And of course you have to go on checking for a key pressed, because you never know, when this key press will happen.

[@MACAW_official]

Finding this video....

[@pdnspam]

Don't push the RED button :-)

[@nenioc187]

Too late ;-)