Here's a little case I designed for my usb-to-serial converter for protection of the chip. It's used to program arduino nano's.

I added the Solidworks file so you can adit it to your needs.

Have fun printing!

Here's the link I purchased the breakout board from:

http://youtu.be/KTloX5GY1do

http://www.ebay.nl/itm/FTDI-Basic-Breakout-USB-TTL-6-PIN-3-3-5V-With-Free-USB-Cable-For-Arduino-/320907184616

Printed with these settings:

0.15 layer
100% infill
speed: 70
bed: 60
Nozzle: 215
Pink PLA

Nothing special to it, just print it and assemble it with 3 m3x10 bolts.