2 open source boards using the PCF8574
Real designs built with the PCF8574, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
ESP32
Charge Controller
jharvey
139.7 × 88.9 mm157 parts2LNo license24PDB
pioneers
112.1 × 88.3 mm72 parts2LNo license8