I'm looking to create a solder reflow oven similar to the one created on the Ben Heck show. I want to take the AT MEGA chip and put it on it's own circuit board. I know I'll need a crystal, but I'm not sure what else is needed exactly. What do I need to take 120v off the power supply cable to the toaster oven and get it to 5V DC for the arduino? I know I could pull apart a wall wart, but that seems a bit messy. Perhaps that is the best option though. Thought I would get everyone's take on that before starting.
I am looking to take the chip from the Arduino and pop it into a custom setup that I create. I figure that if I'm going to go, I might as well go all out. Buying a shield seems to be cheating. Finding out what it takes to put together an embedded solution that I can swap out with the toaster oven's circuit board I am sure will teach me a lot, and be a hell of a lot more interesting than plugging together two things that "just work". There is a .ide on github.