# esp-idf-lib/pcf8574 [](https://github.com/esp-idf-lib/pcf8574/actions/workflows//build.yml) [](https://github.com/esp-idf-lib/pcf8574/actions/workflows//build-docs.yml) [](https://github.com/esp-idf-lib/pcf8574/actions/workflows//validate-component.yml) Driver for PCF8574 remote 8-bit I/O expander for I2C-bus. * [Documentation](https://esp-idf-lib.github.io/pcf8574/) * [Repository](https://github.com/esp-idf-lib/pcf8574) * [Issues](https://github.com/esp-idf-lib/pcf8574/issues) * [Discussions and questions](https://github.com/esp-idf-lib/core/discussions) * [Component page at the ESP Component Registry](https://components.espressif.com/components/esp-idf-lib/pcf8574) ## Installation ```sh idf.py add-dependency esp-idf-lib/pcf8574 ``` ## Support For questions and discussions about the component, please use [Discussions](https://github.com/esp-idf-lib/core/discussions) at [esp-idf-lib/core](https://github.com/esp-idf-lib/core). ## Contributing Please read [CONTRIBUTING.md](https://github.com/esp-idf-lib/core/blob/main/CONTRIBUTING.md) at [esp-idf-lib/core](https://github.com/esp-idf-lib/core).
2c368426f7345fa1f38c6b5b1a79a3d1ec8ffc3e
idf.py add-dependency "esp-idf-lib/pcf8574^1.0.5"