4 layers70.7 × 53.3 mm

Boards in 1 GitHub repository, designed in KiCad, that use the PCA9674PW by NXP Semiconductors (Reset function、Cascading and address extension、Built-in LED driver、PWMOptocouplers TSSOP-16-4.3mm I/O Expanders ROHS). See how each wires it, with its parts, size, README and files; the PCA9674PW’s symbol, footprint and pinout are on its own page.

