Sitting at work surfing Element 14, dreaming of getting my Pi2 this next week. Going to start build a mock up of a 3 jointed arm. Going to start with some 1/4 lexan to make some arm parts and attach them to nema 17 steppers so I can play with the PI and learn how to move the steppers the way I want. Once I get that down going to make two 18 x 3 arm pieces and attaching them to three nema 23, 280 oz. in. Steppers. With a nema 34 under the table to spin the arm left and right. Oh let's see what else I want. I got 5 hours of work left.