Built from the open-source splitflap project. 3D-printed mechanics, custom PCBs, ESP32 firmware, with my assembly-guide fixes contributed back upstream. Not my design. My build.
It’s grown to 20 characters, two rows of ten, and it’s close to its final form: fully framed and hanging on the wall. Still a work in progress, in the way anything with 20 stepper motors always slightly is.