Case for Arduino Nano to parallel port

thingiverse

I started building a CNC machine in 2010 using the design from "Build Your Own CNC Machine." I hit a roadblock when I realized that my computers no longer have parallel ports and the USB to parallel adapters don't work with my break-out board. Then, I got sidetracked by 3D printing and set the CNC aside until recently when I discovered using Arduino and GRBL (https://github.com/gnea/grbl/wiki). My breakout board is poorly documented but I managed to figure out the pin assignments for the X, Y, and Z axis pulse and direction signals and it worked. Once I got everything working (still working on limit signals), I decided I needed a case for my setup so back to 3D printing. I'm a programmer by trade so I prefer designing with code when possible. I love OpenSCAD but the syntax is overly complex, making my head hurt, so I've been using OpenJSCAD (https://openjscad.org/) which I really enjoy. I made this object parametric but all the measurements are precise, so you probably won't want to change anything except maybe overall length or if you need to accommodate a different DB25 adapter. There's definitely room for improvement; I've had issues with the tab on the case top latch breaking, so I added reinforcements and it seems okay so far. Also, I haven't allowed for screwing the DB25 connector onto the CNC driver box because I haven't needed to yet. One could arrange the parts in the case bottom, screw in the DB25 connector, and then snap the top on. This is the connector I used...https://smile.amazon.com/gp/product/B07437RWV7/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1. I soldered 90-degree header pins to the appropriate holes on the Arduino Nano, then I could simply use female to male jumpers to connect to the DB25. I use Candle (https://github.com/Denvi/Candle/) to send g-code to the Nano.