I’m dusting of my soldering and electronic skills to play around with Raspberry PI and Arduino circuit boards. The only problem is that electronics is less forgiving than software development. A bug can blow up some components or even the whole board (don’t ask me how I know…).
If you want to experiment in a safe environment before trying it on your real board, have a look at 123D Circuits. It allows you to design and simulate circuit boards and share the results with the rest of the world.