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You're likely thinking of these displays from companies such as: https://hypervsn.com/ https://hypervsn.com/ https://holofanco.com/ https://holofanco.com/
by burntwater 4y ago
You're likely thinking of these displays from companies such as:
https://hypervsn.com/ https://hypervsn.com/
https://holofanco.com/ https://holofanco.com/
- ignite 4y agoNo, that's way more complicated. They used to make spinners which had something like a dozen red LEDs in a vertical configuration. Very simple. Resolution was like this https://www.amazon.com/128pixel-indoor-electronic-display-message/dp/B00VACVTR0 https://www.amazon.com/128pixel-indoor-electronic-display-me..., but it only displayed one vertical slice at a time.