A work in progress odometer. In a more complete form it will count filament usage and likely find it's way into any other projects where I need to count things. The naming convention resembles an adder because I realized after 5 minutes of working on it, I was really just making a mechanical adder. All holes are sized for 12AWG fence wire without any tuning to ensure good fit yet.

I do not suggest using this for anything unless you understand how to edit the geometry to fix the flaws it undoubtedly has.

Update: I have kind of abandoned this. I found that my printer's firmware has a built in filament tracking system capable of tracking up to 3 filaments. Had no idea the function that stores the preheat and print temps for filaments also has tracking capabilities that actually work. So at this point my focus toward filament use measuring has moved to getting Octoprint to do a software runout detection. Preempting the runout before the print sounds far more reliable than comparing a dodgy slicer estimation against what the odometer reads. May finish it some day just to complete it since it is a kinda of cool project to work through.