TL;DR
This article covers a Halloween-themed project where the author built a CNC (Computer Numerical Control) Ouija board that operates without human touch. Inspired by videos of self-playing chessboards, the project utilizes a lightweight core XY CNC machine constructed from 3D-printed parts, fishing line, motors, and an ESP32 microcontroller. The author’s husband assembled the machine, which later inspired him to create a more robust CNC plasma cutter.