case - DSO138 mini oscilloscope 002

2018-12-30--14-42-55
- A case for the DSO138Mini oscilloscope.

- The current evolution of https://www.thingiverse.com/thing:3234032
Separated into it's own thing for simplicity.

- Supports BNC probe connector, 18650 battery pack and switch.
- Removed the USB port access, because I should have done that weeks ago.

- IMPORTANT:
NOT the "H" version, and probably NOT clones.
Official Manual: https://jyetech.com/Products/LcdScope/UserManual_138mini.pdf shows title of "DN138-12v02" and Model: 13805K - if your DSO138 does not precisely match this model it will not fit in this case.
The model this thing is for does not have a power switch, which is why the BOM below adds one.
The model this thing is for has slightly rounded square edges on the PCB, not large trimmed corners. This should make it visually apparent which one you have.

- Print at 0.4mm nozzle, 0.2mm layers, otherwise all design tolerances will be wrong.
It is a good idea (maybe essential) to specify 0.4mm w