Raspberry Pi Zero - Modular Cluster Case v3

# Purpose
Single piece, stack-able case for Raspberry Pi Zero form factor.

#### Printing tips:
* Disable support for 60 degree overhang.
* Reduce wall count to 3 to reduce stiffness.
* Calibrate retraction to reduce stringing.

#### Usage:
1. Remove peripherals from Raspberry Pi Zero (SD card, Camera,USB... etc).
2. Insert Raspberry Pi Zero in between groves, so the ports touch the roof.
3. Slide additional modules on top or below as needed.
4. Re-attach peripherals.

#### Note:
I'm using a Mango Pi MQ Quad, which should have the same form factor as the Raspberry Pi Zero.

#### Original CAD Model:
https://cad.onshape.com/documents/f5fd845d2fd9b78bc55cb2c7/w/c12c4eb208a2b468b0067699/e/bca11450b615bdf0489a06f5

Edit variables to your requirements.