What was your first Arduino program? Probably an LED blinker — that seems to be the “hello world” of microcontrolllers. You probably moved on to things a little more complicated p… ...

An Arduino is a popular open-source single-board microcontroller. Learn how to program one and let the possibilities take shape.

Arduino simplifies things by only using just one coding language. Here's what you need to get started with developing software for the tiny device.