Among my electronics junk I found a VFD (Vacuum Fluorescent Display) display and wanted to make sure it still works and can be used in projects. It’s a 16T202DA1E display manufactured by Samsung. It can replace standard HD44780 based liquid crystal display out of the box. First of all it only requires 5V supply. Voltage step up circuit for lighting fluorescent display is already on board. Controller accepts same commands as any 2×16 LCD does. The pin-out of display is as follows: Display can be connected either in 8-bit or 4-bit mode. Probably biggest advantage of using VFD is its high contrast and crisp view. Lots of hobbyists prefer using them in high end projects like audio amplifiers or message panels. But these benefits require some sacrifice – they simply draw more power. If 2×16 LCD draws about 2-3mA then this adequate VFD requires between 130mA and 200mA of current.…
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