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-me..., but it only displayed one vertical slice at a time.
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-me..., but it only displayed one vertical slice at a time.