Those of you who completed our 12 days of Codemas Calendar last year will be familiar with buttons as they’re the most popular option for sending inputs to a microcontroller. We'll be introducing some new skills and functions that will come in handy as we progress though the calendar. Today we’re going to learn how to use buttons in a circuit to trigger things in our code, such as printing text, lighting our LED and counting numbers. We're going to make our button control our LED using code, so we're already starting to make our components work together. There's no better way to introduce you to inputs than by using a button, and this year's calendar includes two chunky coloured buttons which are easy to use and add some zing to our breadboard! Using buttons in conjunction with LEDs and other blinky bits is a great way to make a fun, interactive project! Today we're going to look at inputs and how they can trigger our code to do different things. Yesterday we got familiar with creating circuits with outputs (using our LED) and using that circuit with code.

It’s day #3 of the Let it Glow Maker Advent Calendar!

Qt returning a value from a slot