Raspberry Pi Pico Tutorial - 4x4 Matrix Keypad - MicroPython

Welcome to the Learn how to use the Raspberry Pi Pico Tutorial Series! In this video, we dive into the world of 4 x 4 matrix keypads and show you how to use it with the Pico. Using MicroPython, we'll walk you through the process of writing a program that scans all key presses and even create a password guessing program that lights up an LED if the password is guessed correctly.

For more tutorials and projects related to the Raspberry Pi Pico, be sure to check out my channel and consider subscribing. And if you found this tutorial helpful, don't forget to give it a like!

Chapters
0:00 Introduction
0:59 How the keypad works
1:49 Wiring (Schematic)
2:07 Programming (MicroPython)
3:51 Program Demo
4:01 Password Guess Program
5:27 Connect LED
5:42 Program Demo - 2

[NerdCaveYT]

*a small error made in last circuit, remember to add a resistor in series with LED to limit current.

[leonabuehler]

This helped me a lot, thank you so much!

[NapatPHANNACHET]

Could you explain about .high() and .low() in your code please?

[hanedibenachour]

hi i really hope you answer me i am confused why did you put the rows as input and why did you put the columns as outputs

[therealcoolc]

Why did you use the for loop to clear out the guess list? I was trying to get fancy with creating a separate function to clear the list using your method for other reasons and discovered a .clear() function that does the same thing.

[rorogamer]

Why did you set the value of the row pins to 1 when you did set the pins ? When you scan the keys then are all the row pins hight, right?

[ganeshjoshi]

How Input High on pressing as we are not giving any voltage to the pin?

[rickroller]

good video bit any similar video which uses circuit python?

[sylevelzero]

I would like to use the keypad for an lcd screen as i am doing a project which when i enter characters from the keypad they will show up on an lcd screen but when i execute the keypad does not work on the lcd and the gpios are all inputted correctly

[frankjon]

How i can print the words in horizontal form? Like as: 1 2 3 4
No
1
2
3
4
Good vídeo

[hnasfranz]

Nice Video, but where do i get the imports from.

[cjlowe]

Short, simple, consice. Must be a programmer or have an analytical mind!

[gexpert]

At first i thought you were European
Then i heard of say matrix with that south african R