With her signature pink hair, MIT engineer Limor Fried has become a force in the maker movement. Last year she was awarded Entrepreneur of the Year by Entrepreneur Magazine, and her company, Adafruit Industries, did $10 million in sales. Limor has agreed to take some time away from soldering and running a new company to answer your questions about hardware, electronics, and Adafruit. As usual, ask as many as you'd like, but please, one question per post.