Is it possible to connect multiple KC868-HxB actuators in serial communication with a KC868-COLB unit? Let's say I want to formulate a logic rule that changes the state of relays from multiple actuator units - is it possible?
Thanks.

Arduino IDE source code: 

  PCF8574-DO.zip (Size: 771 bytes / Downloads: 768)

https://www.kincony.com/download/KC868-A8-schematic.pdf

https://www.kincony.com/download/KC868-A4-schematic.pdf

Arduino IDE source code: 

  LAN8720_UDP.zip (Size: 902 bytes / Downloads: 877)

Hi

I'm trying to set two relays at once, but only one changed.

I publish via Home Assistant MQTT:

relay32/xxxxxxxxxxxxx/set

{"relay17":{"on":1},"relay18":{"on":1}}



but only relay17 state is changed

please answer
Is it possible to set more than one relay by one MQTT publish command?

with regards,
Gene

thanks for "Calin Mihai Cioci" from UK, the 3D stl file design by him. more details about his KC868-A4 project, see this link:
http://calincioci.uk/kinconya4/

3D print files for Base:



https://www.kincony.com/images/KC868-A4/...ase_A4.stl
https://www.kincony.com/images/KC868-A4/...se_A4.step

thanks for "Calin Mihai Cioci" from UK, the 3D stl file design by him. more details about his KC868-A4 project, see this link:
http://calincioci.uk/kinconya4/

3D print files for Base:



https://www.kincony.com/images/KC868-A4/...ase_A4.stl
https://www.kincony.com/images/KC868-A4/...se_A4.step

thanks for "Calin Mihai Cioci" from UK, the 3D stl file design by him. more details about his KC868-A4 project, see this link:
http://calincioci.uk/kinconya4/

3D print files for Base:



https://www.kincony.com/images/KC868-A4/...ase_A4.stl
https://www.kincony.com/images/KC868-A4/...se_A4.step

here is ESP home config file work with KC868-A8 by ethernet static IP:

esphome:
  name: relay1
  platform: ESP32
  board: esp32dev
 
 
# Example configuration entry for ESP32
i2c:
  sda: 4
  scl: 5
  scan: true
  id: bus_a


# Example configuration entry
ethernet:
  type: LAN8720
  mdc_pin: GPIO23
  mdio_pin: GPIO18
  clk_mode: GPIO17_OUT
  phy_addr: 0

  # Optional manual IP
  manual_ip:
    static_ip: 192.168.2.199
    gateway: 192.168.2.1
    subnet: 255.255.255.0 


# Example configuration entry
pcf8574:
  - id: 'pcf8574_hub'
    address: 0x24


# Individual outputs
switch:
  - platform: gpio
    name: "light1"
    pin:
      pcf8574: pcf8574_hub
      # Use pin number 0
      number: 0
      # One of INPUT or OUTPUT
      mode: OUTPUT
      inverted: false




# Enable logging
logger:

# Enable Home Assistant API
api: