Making the Arduino Blinking LED Project (a Complete Tutorial)

In most programming languages, you start with a program that simply prints “Hello, World” to the screen. The equivalent in the micro-controller world, such as Arduino, is getting light to blink on and off. The LED blinking sketch is the first program that you should run to test whether your Arduino board is working and is configured correctly. An LED, which stands for Light-Emitting Diode, is a small electronic component that’s a bit like a lightbulb, but is more efficient and requires a lower voltage to operate.