Note: V3 of the case does fit the newer V1.3 explorer boards, I have installed one in a case I printed - you can see a video here: https://youtu.be/g00Q3fYnUr0
This is a minimal case (as in small, compact, thin) for OpenAPS edison/explorer rig with a 18650 battery (see potential battery links below). It should also fit similar batteries that are pre-wired and are under ~72mm long and 19mm diameter (including wire bumps). It's more like a skin than a case, so don't expect it to save the rig from falls or rough handling... no warranty express or implied ;)
The cover locks on with a single M2 screw (3mm to 6mm - e.g., the same size screw that the Edison locks onto the Explorer board with).
The wires need to be curled in with the board or above it under the cover. There's not much room so go slow and be careful.
Bonus: there's a hole right over the reset button and it looks actually reachable/usable ;).
Update: the V2 files add a few tabs with a hook that will keep the cover on a bit better, and improved the reset hole, added a few more vent holes over the edison.
Update2: the V3 files increase the size of the case slightly to accomodate larger batteries (e.g., "panasonic 3400mah with tabs" - you can print at 95% of z-height for these since they are shorter due to lack of protection circuit), improve the cap tabs, less risk of breakage, and potentially accomodate the thicker explorer board.
battery links (some require soldering a jst-ph connector on - see footnote below*):
tenergy 2600mAh with wire:
panasonic 3400mAh with tabs:
I found these on ebay, search for "panasonic 3400mah with tabs", but note these do not usually have full PCB protection circuit, just internal protections.
adafruit 2200mAh pre-wired with JST-PH:
I used one from an old battery (carefully removed), but these may work: http://a.co/9ooVhXm
be careful since some connectors have the color coding backwards*. use a voltmeter to check against a known good battery.
- Footnote: It's my understanding the explorer does not have protection for reversing the voltage, so if you solder your own connector be very careful to get the polarity correct.