Published on YouTube by "The Q" on October 25, 2018 (shared by Martin_H on the Parallax Forums). The Q says,
How to Make Mechanical 7 Segment Display from Cardboard
In today's video I want to show you 7 segment display with unique machenism that is our own invention. There are 7 circles inside. Each circle has it's own trigger that read circle program and responds for opening/closing specific segment. Full assembly instructions are includede in the video!
Materials you need: cardbaord, paper, rubber bands, springs and popsicle sticks. Enjoy :)
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