I built this word clock using parts from Adafruit.
It isn’t an entirely original idea, but I was inspired by Doug Jackson’s Wordclock, who in turn seems to have been inspired by German design firm Biegert & Funk’s Qlocktwo. There are a couple of different ways of creating the faceplate. Doug’s Wordclock uses a cut vinyl sticker, while Cello62 and Scottbez1 both use a stack of printed acetate sheets. I used the laser cutter here at Adafruit to create a black acrylic faceplate, which required creating the design with a vector graphics editor.
I built the frame myself using lumber from the hardware store, which was actually fairly time-consuming. Cello62 and Scottbez1 both use an inexpensive store-bought frame, which is another option.
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I love it!
Building something similar but rather than all the pins a mega can offer the LEDs will be multiplexed and controlled with the HT16K33 breakout and I2C (files on github in KiCad).