I actually found this project (https://makerworld.com/en/models/1272917-modular-arduino-slot-machine#profileId-1300082) while perusing 3D Projects on Bambu Lab (https://bambulab.com/) MakerWorld (https://makerworld.com/en). The description had a link to the Reddit post (https://www.reddit.com/r/arduino/comments/1jp78xi/i_designed_this_working_slot_machine_and_fried_a/?rdt=60582).
(https://makerworld.bblmw.com/makerworld/model/US7d65755b23b464/design/2025-04-01_d38dbc3bf2e1a.jpg?x-oss-process=image/resize,w_1920/format,webp)
Interesting