When [Rodrigo Feliciano] realized that the reason his seven-segment LED wall clock wasn ... only had a 3D model of the clock’s PCB, but a schematic he could use to help wire in the Pi Pico.

[Tom] needed 8 displays for a project. He wanted to to control them over I2C, and was trying to reduce cost. Some vendors make I2C controllable seven segment ... re-created the schematic to ...