Hello.



How can I design a keypad matrix 4x4 for Arduino with the capability to custom the color and icon/letters keys and braille texture?



Example:

At the moment, I only have the idea to buy a keyboard with standard buttons and in the other hand buy the buttons with different colors and a plastic protector for each key. After it, print a sticker for the keys and in the plastic protector put the texture of the letters in braille.



Thanks!

 

Grayhill sells blank 4 x 4 keypads.

https://es.farnell.com/grayhill/88bb2/switch-keypad-4x4-10ma-24v-abs/dp/1384657



You can print your own graphics overlay and place over the keypad.

Or you can buy a membrane keypad and and overlay your own graphics: