Anyway. Looking for some pointers other than the one I just realized of not using the raw about anything else I should have learned.
One thing I'm uncertain about is if you feed the arduino 12v and it's a 5v arduino, what does it do with the difference on the pins that I always expect to do 5v when on and 0v when off. Either I have to take additional precautions (I'm thinking about heat generated) running him 12v or do I have to add something else to make sure the digital and analog pins only do 5v? Asking here because I still feel like I should have learned more than I did from this. Thx.