GoKawiilHobbyist builds pocket-size mechanical TV with 4,096 by 20 pixel resolution
A maker documented building the Scanwheel, a small electromechanical television using a spinning 3D-printed drum instead of a traditional Nipkow disk, achieving an unusual 4,096-by-20-pixel widescreen resolution. The device is driven by a Raspberry Pi Pico controlling a motor driver board and LEDs mounted so the drum's perforations sweep past them to trace scan lines, recreating the persistence-of-vision effect pioneered by John Logie Baird in the 1920s.