Every now and then you just want to play around with things and create something. Working in IT, I work with complex processes but nothing tangible. I see things and you want to copy, play and change it. Some examples might be a bird-box with camera, a particulate sensor, or even something mainstream as a Kodi box.
Most of these projects overlap with other hobbies and the moment you start on something, you might slam into a big big knowledge gap. I am not unique, so questions/problems I will run into will most likely apply to others as well. I aim to document and save these for myself and others. This might save me and others time in the future you can spend on other things!