Overview

This is a quick case designed in OpenScad for 96Boards CE standard.
There are lots of options most are generally set by true or false. It can output a case for the normal size or the expanded size CE board. It currently supports adding a UART board within the case. And it allows you to expose the low or high speed connectors.

You may need to adjust the CE_spec_tolerance or the x_scaler, y_scaler and z_scaler variables depending on your 3D printer. This design was tested on an M3D micro printer and it generally fits my boards pretty well. If all dimensions of the case are too small you can adjust it with either the CE_spec_tolerance in one place or you can use the x_scaler, y_scaler and z_scaler variables. If your case prints out too small in only one direction or different amounts in different directions then you must use the scaler variables. The scaler variables default to 1 and are used as a multiplier for that direction. 1.xxxx increases the size, .9xxxxx decreases the size.

The standard CE case interior dimensions should be 54.25 x 85.25 x 12.25. You can calculate the % of change you need based on that.

The extended CE case interior dimensions should be 100.25 x 85.25 x 12.25.
Again you can calculate the % of change you need based on that.

A couple of items were noted with the DragonBoard 410c and corrected (I hope).
And it’s clear that sometimes parts shift when the board is being made, sometimes the connectors stick out over the front edge of the board so I’ve tried to make allowances for that too.

The only thing you need to download is the 96BoardCECase.scad file, the .stl files are 3D print file examples of what the cases could look like.
Or if the sample cases are exactly what you need you can download them directly.

One of the cool things about the 96Boards CE project is that all of the boards us the same pins for the Low Speed Expansion Connector so you can plug any expansion board into any 96Board. We can add the expansion boards here and make up custom case for that combination.

There are a BUNCH of true/false variables that can be selected and a couple of numeric variables too, Extracted from the code:

// Square edge case or rounded edge case? rounded_case = true; // Only the rectangle of the case rounded (sides) or all angles (top, bottom, // sides)
only_rectangle_rounded = false;

// How thick do you want your case walls(in mm)// Square edge case or // rounded edge case? rounded_case = true; // Only the rectangle of the case rounded (sides) or all angles (top, bottom, // sides)
only_rectangle_rounded = false;

// How thick do you want your case walls(in mm) Be careful if you are // setting rounded_case true, too thin of walls will leave holes Don’t go to // thick (much over 2.5) or you will have problems plugging in cables, so // really the range is about 2.00mm – 2.50mm at least for me. case_wall_thickness = 2.5;

// Extended board or regular true/false question, there are no extended // boards at this time (Oct 2015) but when there are we are ready. 96Boards_CE_extended_version = false;

// Do you have a UART board and want room to install it in the case? 96Board_UART_Board_Installed = true;

// The UART board has a reset button, if you want to be able to press it // true expose_UART_Board_Button = true;

// expose the low/high speed connectors or not true/false question expose_low_speed_connector = true; expose_high_speed_connector = false;

// The dragonboard 410c has 4 DIP switches on the bottom, true will make a // hole so you can reach them without opening the case. expose_DragonBoardDipSwitch = true;

// Do I want screw holes through the case? true/false question screw_holes = true;

// Do I want nut holes on the bottom screw_terminator = true;

// For exporting .stl models, this will cut the model in 1/2 at the board // top level. The board will fit into the bottom of the case cleanly and // the top will sit on it slice = true;

// top of the box or bottom slice_top = true;

// How round do you want holes the higher it set to the longer it takes to // render, at 50 it takes 2-3 minutes to render the model smoothness = 50; //10-100

// For development only. Do you want to see the full case, the full diff // model or the bare board model can help when adding new case type // Set true for final case, false shows you the board and screw layout case = true; 96BoardBlock = false;

Project Name:
96Boards CE Case

Description:
This is a repository for OpenScad files and stl files that create cases to the 96Boards CE specification.

Project URL:
https://github.com/96boards/96BoardCECase

Project category:
Case/mount: Cases or other mounting/protection options

Board used:
Hikey, DragonBoard 410c

Project status:
Completed: a project that is finished and ready for others to use