2 layers26.3 × 15.4 mm

Steelpuxnastik SHINSANWASWITCH shinsanwaswitch v1
punkfab/pcb-corpus
235 real KiCad boards from open-source hardware repositories, prepared as a placement and routing benchmark
9 parts1
Boards in 1 GitHub repository, designed in KiCad, that use the RPI-352 by ROHM Semiconductor (-25℃~+85℃ 1.3V 30mA 3mm 800nm DIP-4 Photointerrupters - Slot Type - Transistor Output ROHS). See how each wires it, with its parts, size, README and files; the RPI-352’s symbol, footprint and pinout are on its own page.

punkfab/pcb-corpus
235 real KiCad boards from open-source hardware repositories, prepared as a placement and routing benchmark