I’m in the process of building a home automation controller using my Raspberry Pi, and I figured it would be cool if it could display the current song and artist on my Pandora player. There were many options for a display — I could go with an LCD, an OLED, etc. I figured just to be different I would try a VFD display. VFD stands for “Vacuum Fluorescent Display”. VFDs are an older technology that has existed since the early 1960s. They differ from LCDs in that LCD displays typically have a backlight whereas a VFD emits light directly, in a similar manner to how a fluorescent light works. They often have a blue/green character color.
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