#define LED_BUILTIN 13. This indicates digital pin 13 on the Arduino's pins connector (also called a header). But at the same time LED_BUILTIN tells the Arduino to use the actual built-in LED on ...

Arduino is a do-it-yourselfers dream that allows you to create a true smart home experience tailored to your needs. Check out how to use Arduino to build the smart home you want.

Arduino lends itself very well to a hands-on learning style, so pick up some basic equipment, work through a few tutorials, and then tackle some fun beginner projects. To get started, you will need: ...

The Arduino Wire library is a core aspect of Arduino's integrated development environment, or IDE, and is a must-have if you're using sensors or extra microcontrollers in your project.

While many people like to use Arduino to power their own ideas, an Arduino can also be used as a tool to accomplish projects where someone else has done all the hard work. Think of the Arduino ...

An Arduino can be used to test the life of any battery with less than 5 volts, Boxall says. So, for a quick way to see how much juice your AAA, AA, C, or D batteries have left, build this Arduino ...