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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Music:
"Essence" Audionautix. Creative Commons Attribution (https://creativecommons.org/licenses/...).
http://audionautix.com/

"Look Busy" Kevin MacLeod. Creative Commons Attribution (https://creativecommons.org/licenses/...).
http://incompetech.com/music/royalty-....
http://incompetech.com/