7-phase shows have been around for a lengthy time, and there is a seemingly limitless amount of techniques to make them. The newest of is a mechanical 7-phase from a grasp of 3D printed mechanisms, [gzumwalt], and can use a one motor to cycle via all ten probable figures.
The trick lies in a synchronized pair of rotating discs, just one for the top 4 segments and a different for the base three segments. Each and every disc has a collection of concentric cam slots to travel followers that flip the red segments in and out of view. The display can cycle via all ten states in a one rotation of the discs, so the cam paths are divided in 36° increments. [gzumwalt] has proven us a accomplished physical edition, but judging by CAD style and doing the job prototype of a solitary segment, we are quite self-confident it will. Though it’s not revealed in the style and design, we suspect it will be driven by a stepper motors and synchronized with a belt or intermediate gear.
Yet another 3D printed mechanical screen we have observed recently is a Do-it-yourself flip dot, array, which works by using the identical electromagnet technique as the industrial versions. [gzumwalt] has a gift for creating intriguing mechanical automatons about a single motor, such as an edge preventing robotic and a magnetic fridge crawler.