ESPhome compilation error 74HC595

ESPHome
1

I have a problem compiling a piece of code that I copied right off the 74HC595 documentation page:

esphome:
  name: esphome-web-2fe91c
  friendly_name: ESP32WROOM-Licht14

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "b2gHYVp8V4sUOscpEdJzw718DFLBy34Z5kP5nRrz1j0="

ota:


wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Esphome-Web-2Fe91C"
    password: "SfqTpbv5GbM6"

captive_portal:

sn74hc595:
  - id: 'sn74hc595_hub'
    data_pin: D5 #naar SER
    clock_pin: D8 #naar SRCLK
    latch_pin: D7 #
    oe_pin: D6
    sr_count: 1

switch:
  - platform: gpio
    name: "OUT 04"
    id: OUT04
    pin: 
      sn74hc595: sn74hc595_hub
      number: 3
      inverted: false

In the editor the first section is already marked with the red waves for errors and when compliling I got the following error:

INFO ESPHome 2023.11.6
INFO Reading configuration /config/esphome/esphome-web-2fe91c.yaml...
Failed config

sn74hc595: [source /config/esphome/esphome-web-2fe91c.yaml:33]
  
  Either "data_pin" and "clock_pin" must be set or "spi_id" must be set.
  - id: sn74hc595_hub
    data_pin: D5
    clock_pin: D8
    latch_pin: D7
    oe_pin: D6
    sr_count: 1

Any clue what I’m doing wrong?

Additional question:
Can 75HC595 be used as imput, e.g. for binary sensors?

Thanks for any help

2

The problem lies in that you’re using an ESP32 and the example at ESPHome.io is using an ESP8266 - as you can see by it’s using D5, D6, D7 and D8 pins.

I don’t know what pins you want to use but changing the pins to something like:

sn74hc595:
  - id: 'sn74hc595_hub'
    data_pin: 16
    clock_pin: 17
    latch_pin: 18
    oe_pin: 19
    sr_count: 1

Doesn’t give any errors.

PS. You can see more about which pins to use here:

and yes, you should be able to use the output of the SN74HC595 as input for a GPIO Binary Sensor.

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