Just getting into Arduino. Bought a couple of starter kits. Breadboarding is fine, but at a certain point you'll want to keep a project, hopefully in a form other than breadboard.
All of the little sensor boards are uneven on the bottom and you really shouldn't flush mount them.
Spacers are expensive, sold in bulk, and several different small sizes are needed, M2, #2, #4, & #6. Additionally the traces are small and can be damaged during installation.
There are literally dozens of different sensors and output cards in the kits. Seemingly all with different hole patterns, hole sizes and various cable projections.
The prongs on the mounts are designed to be pressed with a hot iron to form a "rivet head" once the brackets themselves are mounted with the attached hardware.
SS allen head screws are used with nylon insert locknuts so the mounts can't vibrate loose and the screws and nuts stay connected during handling.
Everything red was printed.
Actually creating a solid Arduino is much more than the wiring and code.
The DuPont connectors are hard to install for those of us with fat fingers (like myself). keeping the orderly is a challenge. The Arduino end is a proto card with solder pads. One end of each lead is soldered to the proto and the other is loose female connectors. One item 3D printed is a connector body to consolidate the loose pins into one assembly.
Here are the parts and mounts along with all needed installation hardware and cable stub
All of this stuff allows the parts to be securely and easily installed as a kit.
Everything was created in free TinkerCAD and printed with a $150 G0923 Grizzly.com 3D printer over a couple of days.
Additionally simple housings can be easily made.
Anyone interested can use these designs on TinkerCAD if they drop me an IM.