Boards in 2 GitHub repositories, designed in KiCad, that use the PCF8574ADWR by Texas Instruments (-40℃~+85℃ 100kHz 10uA 2.5V~6V 25mA 300uA 8 I2C Interrupt Output Push-Pull Reset function、Cascading and address extension、Built-in LED driver SOIC-16-300mil I/O Expanders ROHS). See how each wires it, with its parts, size, README and files; the PCF8574ADWR’s symbol, footprint and pinout are on its own page.
SA-04/Data-Recorder-GWRC-
An open source and open hardware IoT-connected SDI-12-enabled remote data recorder capable of deployment for environmental monitoring by New Zealand Regional Councils.
