Yow Revisited (in Txtzyme)

The HDLx-2416 is a neat little four-character ASCII display that just happens to fit, pin-for-pin, on top of a Teensy as if the Teensy were made for it. I snagged one from the DorkbotPDX spare parts bin after Dave showed me how neatly his Yow! project fit together. Of course, while testing the limits of Txtzyme, I had to put a Yow clone together.