I got this from Instructables the main setup is in my links. I built it for my CnC. Im sure you might be able to adapt to build a reprap or repstrap . It is a great way to test your setup due to the fact that the chips needed are available and very cheep. They also can be found in a lot of printers. I'm all about re-using materials. A lot of times also if you look real close on the db25 cable you can see tiny numbers that specify the order.
