Here’s what I was thinking, I want to make something that would automatically switch on the light when I open the door. The first thing that came to mind: a sensor detects door opening, sends a digital signal to some kind of a switch, and there is light, simple. These days, the first thing that comes to mind is an Arduino but NO, that’s just the lazy voice in my head telling me that it’s just so easy to write a few lines of code. Using an Arduino in this kind of project would be such a shameful overkill that I’m not even gonna go there (and I think that we learn some useful basic electronics along the way)…
So, here’s the way I built it.”


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