I have completed the design of an enclosure for the PCB (links to downloadable files are below).

I used Fusion 360 for the design, and my Prusa i3 MK3 for the prints.

It took me several iterations to get the details right, but it was worth it.

Here’s the end result, top and bottom part:

The enclosure. Top (right) and bottom (left, contains the controller).

The only adjustment to the controller assembly was to change the header of the soil humidity sensor:

Here’s some of the early prototypes:

There was always something to improve. The placement of the openings, how the top and the bottom part latch to each other, the grills (I plan to use them to attach the controller to the terrarium using a string).

Even the aesthetics, such as the more pleasing rounded corners, were part of the prototyping process.

Here’s the final version of the enclosure in Fusion 360 (at least for now):

I am pleased with how the two parts fit together, and the end result in general. I printed this on my Prusa printer, using generic ABS plastic and 20% fill. No supports needed, and actually went for the faster print profile instead of detail.

Downloadable files

Node-RED controller enclosure, STL. (Best for importing into your printer slicer program)

Node-RED controller enclosure, f3D (Fusion 3D). (Best for editing in Fusion 360)

Link to the Fusion 3D project.