4x4 MATRIX KEYPAD / MEMBRANE KEYBOARD - Arduino tutorial #26

There are many kinds of matrix keypads. A flat one, the so-called membrane keypad, but there keypads with tactile switches available as well. Even the size can vary per model. Below, in the component section, there are all kinds of keypads listed with the sizes 4x3, 4x4, 4x1, 5x1, 6x1 and 3x4. They all work the same way: for each row and column there is a pin.

When you press a key, a row and column is connected. This makes two pins on the Arduino HIGH. In this way we can determine which button has been pressed. In this video I explain how you can use a keypad library to make your life easier.

The Arduino for beginners tutorials series guides you through the world of Arduino. A video is around 10 minutes and shows you step-by-step how to build the circuit and write the code. The website contains the course material, circuit diagram, Arduino code and shopping list of all the components used in the tutorial.

COMPONENTS
🇨🇳 Arduino Uno (clone)

🇨🇳 Jumper wire male-male

🇳🇱 Jumper wire male-male

🇳🇱 4x4 matrix keypad

🇨🇳 4x3 matrix keypad

🇨🇳 4x3 matrix keypad blue/white

🇨🇳 4x1 matrix keypad

🇨🇳 6x1 matrix keypad with light

🇨🇳 4x5 matrix keypad with light

🇨🇳 4x4 buttons matrix

🇨🇳 3x4 buttons matrix

CHAPTERS:
00:00 Introduction
00:18 Components
00:31 Membrane keypad
01:43 Building the circuit
02:34 Arduino code
05:56 Running the project

#arduino #BasOnTech

[nishantrishinair]

thanks for the tutorial, this really helped.

[eysaerkarababa]

I have a keypad that has these push buttons with 16 of them.
Their name goes from 1 to 16 .
Can I use the code but with numbers with 2 digits😊

[bobsmithy]

Just curious does the membrane keyboard support multiple keys being pressed at the same time (for a project I need 3-4 keys being pressed at the same time and I'm not sure if those membrane keypads allow for that)

[lobotomia_]

how can i take in output two numbers instead of only one??

[tomscietvirs]

Hello!

do you know how can i make a 15x15 keypad matrix?

how to create a larger (hexaKey) table! there are not so many symbols on the keyboard and he does not allow me to type between two ('....')

for example ('1a')

does not support combination!

[rafaelmarquesribeiro]

Hi!
Is it possible to use your Arduino Code implemented in StandartFirmata?
Thanks!

[TheUnofficialMaker]

instead of numbers how about a programmers keypad to add { } ( ) etc without using shift key connected usb to laptop