Glowwriter
Glow Writer
My exhibit in the 2018 NYCR Interactive Art show was a scrolling signboard built with near-UV LEDs and a loop of glow in the dark tape pulled by some scrap motors. The font is the same as the MTA Countdown Clock.
Instead of making a proper PCB, I noticed that the surface mount LEDs spanned 0.1" perf board holes and wired them all annode to cathode and blobbed solder from adjacent holes to connect to a header pin. 17 GPIO pins from a Teensy 3 provided the drive at 1/16 scan rate. The motor ran off the USB +5v at whatever speed it was going to run at.
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Source:
github.com/osresearch/glowpov -
More photos: https://www.flickr.com/photos/osr/albums/72157707159298665
Last update:
November 8, 2020