About this 3D model

Re draw of Tinhead's Valkyrie stepper motor board (V2.7)to use surface mount parts in a single sided board to make it easy to fabricate yourself. This uses I2C to communicate with the main board (see; http://letsmakerobots.com/node/9006) Because it is surface mount I added an isp header to allow programing and just for fun I added a ftdi header. I also added a second I2C header to allow easy daisy chaining of stepper boards.