There are some components which are used within our sphere so often as to become ubiquitous, referred to by their part number without the need for a hasty dig through a data sheet to remind oneself ...

Description: In this project I did a Christmas jumper with rgb LEDs, this can also be a creative clothing project or whatever ...

Let’s say you want to blink an LED. You might grab an Arduino and run the Blink sketch, or you might lace up a few components ...