A mechanical 7-segment display

Takao’s Craft (Twitter & YouTube) demonstrates a 7 segment numeric display that is totally mechanical. It appears that a patent has been applied for.
“Analog 7 segment mini (simple version)” is completed! It was long. But still from now on. First of all, I want to make a “mechanical piggy bank” with this. The sound is as pleasant as ever, so please listen to it with “sound ON”~
The video below is older and explains how it’s done. The one above is a recent incarnation.

See the video below and more on this Twitter Thread (Japanese)

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