i just ordered a b-pi and cant wait to get it.
During wintertime, i would like to learn a bit of controlling hardware and stuff (the simple ones ),
but i really dont know where to start at - i guess the thing i need is Arduino, right? (Thats the Board which can be connected to a breadboard?).
Theres so much stuff around the r/b-pi and i dont get the point where to begin.
What do i need to, f.E., build an simple relay circuit? (except of standard-parts like wire, relay, etc.)