2 layers50 × 85 mm

Boards in 1 GitHub repository, designed in KiCad, that use the PCAL9555APW by NXP Semiconductors (-40℃~+85℃ 1.65V~5.5V 400kHz I2C、SMBus Interrupt Output Reset function、Cascading and address extension、Built-in LED driver TSSOP-24 I/O Expanders ROHS). See how each wires it, with its parts, size, README and files; the PCAL9555APW’s symbol, footprint and pinout are on its own page.
