Interface ESP32 with the PCF8575 I/O Port Expander

This post will show you how you can increase the number of GPIO port of your ESP32 using the I2C PCF8575 port expander module with the Arduino framework. WriteUp: https://www.donskytech.com/esp32-pcf8575-port-expander/ Code: https://github.com/donskytech/platformio-projects/tree/main/esp32-projects/esp32-pcf8575-port-expander Contents of the Video: 0:00 Intro 1:00 DonskyTech Plug 1:15 What is an I/O Port Expander and Why do we need one? 2:30 What is PCF8575? 4:34 What is I2C in PCF8575? 5:18 LED, Button, and PCF8575 - Wiring and Schematic 6:24 16 Channel Relay and PCF8575 - Wiring and Schematic 7:28 PCF8575 Arduino Library 8:14 Button switch handling in PCF8575 - ESP32 9:11 Demo - Button switch handling in PCF8575 - ESP32 9:49 LED Blink in PCF8575 - ESP32 10:07 Demo - LED Blink in PCF8575 - ESP32 10:28 PC8575 - 16 Channel Relay - ESP32 12:08 Demo PC8575 - 16 Channel Relay - ESP32 16:40 Outro If you like my post or videos then please consider subscribing to my channels and sharing them with your friends: Website: https://www.donskytech.com Youtube: https://www.youtube.com/c/DonskyTech Facebook: https://www.facebook.com/DonskyTech Twitter: https://twitter.com/DonskyTech If you are generous and think I have helped you, please consider buying me a coffee. ? Buy Me a Coffee: https://buymeacoffee.com/donskytech Patreon: https://www.patreon.com/donskytech #esp32 #pcf8575 #arduino #port-expander #relay #iot