The maze is defined as an array in the OpenSCAD file – it doesn’t generate mazes, just creates the model from an already-defined maze. See Ferjerez’s writeup linked from his model.
Be aware it’s not the quickest model for OpenSCAD to render. I’ve not marked it as a customizer as I suspect it’s way too heavy duty.
In addition to the all-in-one STL for the marble run itself, I’ve generated separate components which can be assembled for multi-material prints. I’ve not actually printed it multi-material, as it was going to spend 4 times as much filament on the purge tower as it was on the print itself. So I’m not going to do that until I’m happy with the result.
P.S. Thingiverse seems to be struggling to generate renders of the STLs – but they are all there!
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.