pcf8574:
  - id: 'pcf_right'
    address: 0x20
    pcf8575: true
  - id: 'pcf_left'
    address: 0x21
    pcf8575: true
  - id: 'pcf_inputs_1to16'
    address: 0x26
    pcf8575: true
  - id: 'pcf_inputs_17to32'
    address: 0x27
    pcf8575: true