Raspi/Arduino Drive sled

Still a work in progress. I still need to print one of these and double check all the dimensions and location of the 4 screw holes.

Wanted a way to use an empty drive bay to hold an arduino or raspi ( or both) computer. Have the idea to use the smaller computers to interface to the real world, or to automate downloads from the internet, or other mass actions, while saving power by not running the desktop computer all the time. But to use the keyboard and display of the bigger computer alon