For my PCB Mill, I wanted to use something more portable than the SDTR-4C that I use for my Taig Mill and Sherline Lathe.  I was originally planning to use a RAMPS setup, but for a few reasons I went a different way.  I won’t go into it here, but may later.  Below is a picture of the grblShield mounted on an Arduino Duemilanove.  Its running the latest grbl firmware.  I’m driving a nema17 taken off my old cupcake.  I’m using a laptop power supply to make it lighter and more portable.

Because this Dell power supply uses a strange connector, I’ve rigged the remote wires to power up and and connected the wires manually.  I’ll find a molex connector that I can make work soon.

Lastly, here is a video of one stepper running.