odroidH2_nas

Simple open frame NAS using odroid H2 and two 3.5 inch drives

The design allows for mounting two drives and a 120mm fan in a compact, 
simple to print form factor.  A 15v to 12v buck converter powers the fan.
The design ended up going this route since the odroid 92mm fan (5v) made from 
"unobtanium" apparently uses a molex picoblade connector.  No stock 
anywhere means "roll-your-own".

Frame is assembled with M3 screws and captured M3 nuts. Used available rubber feet 
to lift frame off the desk.  The added dc jack allows having only one 
power supply for the odroid and the fan. readily available  D-SUN 3A STEP DOWN 
SWITCHING VOLTAGE REGULATOR (mp1584en chip)  used to drop incoming 15v to 12v for fan.
This allowed a single power supply line  to unit and common 12v fan.  The design 
also allows for several anchor points or standoff mounts if you need to further 
shield the components. 

The hardware for mounting drives might look familiar. It is a re-use of an 
older antec P180 enclosure drive mounting system. The unique shoulder screws and 
grommets allow isolation from the chassis with little noise/vibration transfer.
Instead of sliding through a sheetmetal keyway, I just make a fat slot to hold 
them. The shoulder screw snugs the grommet into place nicely.


The assembly is supplied in Designspark v4 format (.rsdoc). 
There is also an Acrobat 3d pdf for assembly.


rsdoc file converted to sat using rsdoc_to_sat [[https://github.com/arekm/rsdoc-to-sat]]
sat file converted to step file using grabcad [[https://workbench.grabcad.com]]

several reference step files are from grabcad ( hard drives, noctua fan, hdwe and dcjack )