How to Add more GPIO to ESP devices

In today’s video we are going to take a look at expanding the GPIO that is available on a ESP32 by using a pcf8575 I/O Expander

Code used to scan for connected devices

i2c:

  sda: GPIO1
  scl: GPIO3
  scan: true
  id: bus_a

Code Used for adding the pcf8575 I/O Expander With a contact sensor

binary_sensor:
  
  - platform: gpio
    name: "pin0"
    id: pin0
    pin:
      pcf8574: pcf8575_hub
      number: 0
      # One of INPUT or OUTPUT
      mode: INPUT
      inverted: true  

Code For adding a relay

switch:
  
  - platform: gpio
    name: "pin0"
    id: pin0
    pin:
      pcf8574: pcf8575_hub
      number: 0
      # One of INPUT or OUTPUT
      mode: output
      inverted: true