Zweistein
February 22, 2025, 4:55pm
1
Sorry for the bad English… (google translator)
I have a problem with esp8266 and 74hc595
After adding the device to home assistant, the switches behind the 74hc595 don’t work. Picture
I don’t know what to do and I couldn’t find anything on the internet that I’m missing. If something is missing, then HA
The code I have flashed …
sn74hc595:
- id: 'sn74hc595_hub'
data_pin: GPIO0
clock_pin: GPIO2
latch_pin: GPIO5
switch:
- platform: gpio
name: "Noc"
id: OUT04
pin:
sn74hc595: sn74hc595_hub
# Use pin number 0
number: 0
inverted: True
- platform: gpio
name: "Den"
pin:
sn74hc595: sn74hc595_hub
number: 1
inverted: True
- platform: gpio
name: "Korytnacka 1"
pin:
sn74hc595: sn74hc595_hub
number: 2
inverted: True
- platform: gpio
name: "Korytnacka 2"
pin:
sn74hc595: sn74hc595_hub
number: 3
inverted: True
- platform: gpio
name: "Vianocny Domcek"
pin:
sn74hc595: sn74hc595_hub
number: 4
inverted: True
- platform: gpio
name: "Rezerva 1"
pin:
sn74hc595: sn74hc595_hub
number: 5
inverted: True
- platform: gpio
name: "Rezerva 2"
pin:
sn74hc595: sn74hc595_hub
number: 6
inverted: True
- platform: gpio
name: "Rezerva 3"
pin:
sn74hc595: sn74hc595_hub
number: 7
inverted: True
Could someone help me?
Karosm
February 22, 2025, 5:13pm
2
You could try with different Gpio-pins, 0 and 2 have pullups.
Also, make sure OE pin is pulled low (GND).
Zweistein
February 22, 2025, 6:52pm
3
I’ll try OE…
It might be worth mentioning that all outputs (relays) turn on at startup and then turn off beautifully according to the configuration. The strange thing is that only HA does not add entities to my list (to the entity list) and they cannot be controlled as seen in the picture.
Post your full yaml file.
If you removed the API line at a certain point in time, then HA will never know the state of your entities
Zweistein
February 22, 2025, 10:36pm
5
this is definitely okay… I created a new file several times and also deleted it several times and created a new device again…
esphome:
name: akvarium
friendly_name: Akvarium
esp8266:
board: esp01_1m
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "cAqedHcX4KbTdxOkT20cVFyszpy0Lq907Ql/Y+UTQEk="
ota:
- platform: esphome
password: "7a411121a48ac40a74694910dc492cd2"
wifi:
ssid: "Home-Asisstant"
password: "secret"
manual_ip:
# Set this to the IP of the ESP
static_ip: xxx.yyy.zzz.18
# Set this to the IP address of the router. Often ends with .1
gateway: xxx.yyy.zzz.1
# The subnet of the network. 255.255.255.0 works for most home networks.
subnet: 255.255.255.0
# Enable fallback hotspot (captive portal) in case wifi connection fails
# Enable fallback hotspot (captive portal) in case wifi connection fails
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Akvarium ERROR"
password: "ZRaPADQ4Zkj0"
captive_portal:
# Example configuration entry
sn74hc595:
- id: 'sn74hc595_hub'
#type: spi
data_pin: GPIO0
clock_pin: GPIO2
latch_pin: GPIO5
oe_pin: GPIO4 ## stabilny pin (13)
#sr_count: 2
## GPIO2 -> srclk(11) GPIO0 -> ser(14) GPIO5 -> rclk(12)
i2c:
sda: GPIO12
scl: GPIO13
scan: true
one_wire:
- platform: gpio
pin: GPIO14
#dallas:
# - pin: 14
switch:
- platform: gpio
name: "Noc"
id: OUT04
pin:
sn74hc595: sn74hc595_hub
# Use pin number 0
number: 0
inverted: True
mode: output
- platform: gpio
name: "Den"
pin:
sn74hc595: sn74hc595_hub
number: 1
inverted: True
- platform: gpio
name: "Korytnacka 1"
pin:
sn74hc595: sn74hc595_hub
number: 2
inverted: True
- platform: gpio
name: "Korytnacka 2"
pin:
sn74hc595: sn74hc595_hub
number: 3
inverted: True
- platform: gpio
name: "Vianocny Domcek"
pin:
sn74hc595: sn74hc595_hub
number: 4
inverted: True
- platform: gpio
name: "Rezerva 1"
pin:
sn74hc595: sn74hc595_hub
number: 5
inverted: True
- platform: gpio
name: "Rezerva 2"
pin:
sn74hc595: sn74hc595_hub
number: 6
inverted: True
- platform: gpio
name: "Rezerva 3"
pin:
sn74hc595: sn74hc595_hub
number: 7
inverted: True
Karosm
February 22, 2025, 11:19pm
6
Zweistein:
board: esp01_1m
doesn’t have gpio5 exposed
Zweistein
February 23, 2025, 1:03am
7
I would like to ask for a solution for HA …
PS: GPIO5 is pin 20 and that is also D1 → D1 MINI is D1 signal for shield relay…
In addition, after flashing, all outputs always light up (turn on) and then you can see how they quickly turn off gradually → I assume that the 74HC595 receives the correct data on all pins as it should
Zweistein
February 23, 2025, 4:23pm
8
To avoid wrong solutions…
with this setting every steam relay is on
switch:
- platform: gpio
name: "Noc"
id: OUT04
pin:
sn74hc595: sn74hc595_hub
# Use pin number 0
number: 0
inverted: True
mode: output
- platform: gpio
name: "Den"
pin:
sn74hc595: sn74hc595_hub
number: 1
inverted: False
- platform: gpio
name: "Korytnacka 1"
pin:
sn74hc595: sn74hc595_hub
number: 2
inverted: True
- platform: gpio
name: "Korytnacka 2"
pin:
sn74hc595: sn74hc595_hub
number: 3
inverted: False
- platform: gpio
name: "Vianocny Domcek"
pin:
sn74hc595: sn74hc595_hub
number: 4
inverted: True
- platform: gpio
name: "Rezerva 1"
pin:
sn74hc595: sn74hc595_hub
number: 5
inverted: False
- platform: gpio
name: "Rezerva 2"
pin:
sn74hc595: sn74hc595_hub
number: 6
inverted: True
- platform: gpio
name: "Rezerva 3"
pin:
sn74hc595: sn74hc595_hub
number: 7
inverted: False
After adding this example I went to try to remove and add a device and suddenly the entities appeared to be functional and working…
Solution (probably in case this happens to someone too)
turn off for at least 5 hours preflash random setup inverted: True/False
