Teensy++2.0
grabcad
From the PJRC Store: The Teensy++ USB Development Board is a complete USB-based microcontoller development system. Only a standard Mini-B USB cable (sold separately) is needed to connect to a PC or Macintosh. This version features header pins to directly plug into a solderless breadboard. The Teensy is also available without the header pins. All Teensy boards are shipped assembled and fully tested. There is a drag and drop interfacing software available from the website linked - I am not the creator or seller - I am using this board to interface my CNC Control Panel to my PC.
With this file you will be able to print Teensy++2.0 with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Teensy++2.0.