Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4733976.
Simple breadboard that is designed to be printable on an Ender 3 size printer. I wanted something that allowed the Arduino/Mega board to be in the middle of the breadboards to allow for better wire routing. I am using cut pieces of a toothpick to serve as the mounting posts for the boards which allows me to quickly change out boards for different projects. Screws can always be used instead which was what the original design called for.
This is a work in progress and I am working on some additional add-ons to easily a screen and shields that you want to use but are unable to mount on the board itself (because of wiring or other shields being used at the same time.