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The display consists of a form of 3d-printed white plastic over which a thin, bright orange sheet of silicon is laid, which is pulled into the plastic form to make indentations in the shape of the single segments of the display.

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The display consists of a form of 3d-printed white plastic over which a thin, bright orange sheet of silicon is laid, which is pulled into the plastic form to make indentations in the shape of the single segments of the display.
https://assets.chaos.social/media_attachments/files/116/403/243/957/472/411/original/8ebd6ef2953ca6fa.jpg

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Daniel Bohrer (daniel_bohrer@chaos.social)'s status on Tuesday, 14-Apr-2026 22:36:00 JST Daniel Bohrer

Someone built a 7-segment display with multiplexer logic made of vacuum tubes. Literal air-powered vacuum tubes; so no electricity is needed except for the pump and the controller on the multiplexed input tubes.
https://www.youtube.com/watch?v=E1BLGpE5zH0

In conversation about 3 months ago from chaos.social permalink