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Windell Oskay of EMSL found this 12-inch seven segment display on his trip to electronics megacity of Shenzhen, China, and he started hacking a controller for it right there in the hotel room:

As part of the China trip last week, we had a little scavenger hunt, where the challenge was to build something with parts and tools acquired at the electronics markets.

Here’s what I found: a single-digit seven-segment LED display with twelve inch digit height. (Whoa!)

When I came across this display, it was in the display case of a vendor at the SEG electronic market– it was too tall for the display area so they had to put it in sideways, next to the 8″ displays. (It’s the one with the green protective film.)

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Becky Stern

Becky Stern is director of wearable electronics at Adafruit Industries. Her personal site: sternlab.org


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