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Replying to @DavidGlaude and @abetusk

I actually didn’t. I couldn’t find alphanumeric displays in that size or color, so I wrote out the title in a segmented font, 3D printed it and used some tape and Elmer’s glue as a diffuser. It’s illuminated by an army of white LEDs; I can dim the title but can’t change the text.

(original)