Laying out a PCB
Creating a PCB might be one of the more fun things to do when it comes to engineering. You basically want to take this:
And turn it into this:
Unfortunately, what they don't tend to tell you is you have to go through this part first:
Each one of those yellow lines represents a trace that needs to be routed. Traces cannot overlap, unless you route them on opposite sides of the board. Traces cannot be too close together. Parts need to be ordered in a way that makes logical sense. And there's no computer program in the world that can do this well. It all has to be done by hand.
This board has about 45 components. Routing them all and working the bugs out is probably going to be a...