how to integrate KC868-A8 to home assistant by MQTT

[guycaluwaerts]

I'm so far that I could modify the configuration.yaml file and I restarted home assistant.
I can see the in- and outputs. Probably this information is from the configuration file, but there is no communication with the board

[admin]

your yaml file , some use by A8 topic, some use by A16 topic. The content is very confusing.
but firstly, make sure your mqtt broker is correct.

[guycaluwaerts]

I changed the yaml file, but I don't understand how to setup the mqtt broker in home assistant

[admin]

broker address is wrong. you should input such as "mqtt://192.168.1.3"
don't use domain ,only input mqtt://ip address

[guycaluwaerts]

I made the corrections, but still have problems with the communication between the kc868-a16 and homeassistant.

I checked with mqtt-explorer ( see attachment) and see homeassistant server and the  kc868-a16 board. (status homeassistant is most of the time offline)
In the overview screen from homeassistant I can activate the output but after a second the switch go off again. Nothing happens on the board, so the command is not send to the  kc868-a16 board.

Another problem I have is with the board.
When I go the the network page, I receive the login screen. The network screen does not open.

Board : KC868-A16 rev. 1.6
bin file loaded : KCS_KC868_16_V2.2.17

Homeassistant 3/12/2025

Mosquitto : 2.0.22

[guycaluwaerts]

I got it working.
Broker username and password has to be defined in homeassistant as user.

[admin]

ok, good.