If you upload this sketch you’ll notice that the LED is blinking once every second. Now let’s analyze the code. In the setup function is only one instruction that sets the pin 13 as OUTPUT. This ...

In this article I will add some simple Arduino LED projects starting with basic ones like how to turn on an LED, blinking, and more. Every step will have the code, the schematic, photos of the project ...

Back to the Blink example In the Blink sample's setup () function, there is one line of code: pinMode(LED_BUILTIN, OUTPUT); Both LED_BUILTIN and OUTPUT are #defines defined by Arduino headers.

Many of us know the basic Blink Arduino sketch, or have coded similar routines on other microcontrollers. Flashing an LED on and off—it doesn’t get much simpler than that. But how big should … ...

DIY Arduino-Based Halloween Blinking Eyes Effect David Galloway October 27, 2012 David Galloway ...