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How to Save Your Project with Multiplexing When You Don’t Have Enough GPIO Pins
TUTORIAL
1.914

How to Save Your Project with Multiplexing When You Don’t Have Enough GPIO Pins

By Zach Hipps

Discover how multiplexing can solve GPIO pin shortages in your projects. Learn practical designs for controlling LEDs and buttons, ensuring efficient design.

PROJECT
128

Translate an Idea Into Arduino Code

By bekathwia

Follow along as I share my workflow for turning an idea into an Arduino sketch for a functional prototype.

How to Add a Keypad to an Arduino Project
TUTORIAL
611

How to Add a Keypad to an Arduino Project

By Maker.io Staff

Learn how to connect a small keyboard to an Arduino, how the keypad functions in theory, and how you can implement that theory in software.

How to Connect a Keypad to a Raspberry Pi
TUTORIAL
6.161

How to Connect a Keypad to a Raspberry Pi

By Maker.io Staff

Requiring a few digital I/O pins to operate, a simple matrix keypad provides users a convenient way to input data and interact with Raspberry Pi based projects.