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Great!

Appart from nixies, I also love VFDs ( https://en.wikipedia.org/wiki/Vacuum_fluorescent_display) , but, as of today, the only options seem to be Noritake (pretty nice quality in my little experience), and Matrix Orbital (can't talk about them).

There are some Noritakes which are pin-compatible with hd44780 controllers, so I've used them to substitute older LCD displays, and they look great!

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VFD reminds me of growing up in the 80's when the only use for LCD was cheap solar calculators and Casio wrist watches.

Nixie tubes just make me feel warm and tingly.

And amateur fishing sonar screens...

I have a couple of 20 character VFDs with a serial-to-HD44780 interface I bought about 10 years ago and still haven't used for anything useful. They are power hogs, and with bright blue LED displays so cheap now, essentially obsolete, but I simply can't bring myself to throw them out. I just love the look.

Maybe I should use them in a Z-80 project ;-)

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