2 layers67.3 × 17.8 mm

Opt100umq
whowechina/sanwa_opt
Optical sensor mod for Sanwa buttons (such as those in Pop'n Music, SDVX or IIDX)
14 parts24CC0-1.0
Boards in 2 GitHub repositories, designed in KiCad, that use the ITR8402 by Everlight Electronics (DIP-4 Photointerrupters - Slot Type - Transistor Output ROHS). See how each wires it, with its parts, size, README and files; the ITR8402’s symbol, footprint and pinout are on its own page.

whowechina/sanwa_opt
Optical sensor mod for Sanwa buttons (such as those in Pop'n Music, SDVX or IIDX)
