improvement:

mainly support integrate to Loxone Mini-Server by RS232 port.

1. after INPUT trigger (when released input with GND) will auto feedback "DIARM" message to TCP client and RS232.

such as if you let INPUT short with GND, will send "RELAY-ALARM-1,OK" , that means: INPUT-1 is trigger.
when released, will send "RELAY-DIARM-1,OK" , that means: INPUT-1 is released, just "disable alarm".

2. It supports sending multiple control relay commands to the KC868-H32B at one time by RS232 or TCP. The controller will process them in a queue without discarding the commands. At most, MAX 32 commands can be received at the same time

such as you can send these command at one time by RS232 or TCP:
RELAY-SET-255,1,1
RELAY-SET-255,2,1
RELAY-SET-255,3,1
RELAY-SET-255,4,1
RELAY-SET-255,5,1
RELAY-SET-255,6,1
RELAY-SET-255,7,1
RELAY-SET-255,8,1
RELAY-SET-255,9,1
RELAY-SET-255,10,1
RELAY-SET-255,11,1
RELAY-SET-255,12,1
RELAY-SET-255,13,1
RELAY-SET-255,14,1
RELAY-SET-255,15,1
RELAY-SET-255,16,1
RELAY-SET-255,17,1
RELAY-SET-255,18,1
RELAY-SET-255,19,1
RELAY-SET-255,20,1
RELAY-SET-255,21,1
RELAY-SET-255,22,1
RELAY-SET-255,23,1
RELAY-SET-255,24,1
RELAY-SET-255,25,1
RELAY-SET-255,26,1
RELAY-SET-255,27,1
RELAY-SET-255,28,1
RELAY-SET-255,29,1
RELAY-SET-255,30,1
RELAY-SET-255,31,1
RELAY-SET-255,32,1


  Relay32_V443_220402.zip (Size: 47.02 KB / Downloads: 308)
download the ZIP file , unzip update the bin file for KC868-H32B relay controller by USB-RS232 cable.

1. install ESP32 USB driver for KC868-Server, download from: https://www.kincony.com/download/CH341SER.zip

2. install ESP32 USB driver

3. download arduino IDE: https://www.arduino.cc/en/software/

4. install arduino IDE

5. config for ESP32: https://www.kincony.com/forum/showthread.php?tid=281

6. install rc-switch arduino library

7. download this RF / IR decode demo source code: 
  KC868-Server-wireless-decode.zip (Size: 3.89 KB / Downloads: 537)

8. detect your RF or IR remoter's key code

9. replace your own RF or IR remoter's key code

10. download firmware to KC868-Server by TYPE-C USB cable

1. switch panel type: momentary.

2. button wires to KC868-Server's digital input ports.

3. LED indicator wires from KC868-Server's digital output ports.
   

4. double click function define for key buttons:

key1: ON 3,4,5,6
key2: OFF 3,4,5,6
key3: invert 3,4,5,6

5. momentary time:

relay4: 1 second
relay5: 5 second

this is sample diagram for 8 gang switch panel with KC868-Server and feedback output state for LEDs.
   

if want to read output1 by http command, here is url:
http://10.10.10.135/cm?cmnd=Power1%20state        will feedback: {"POWER1":"ON"}

if want to read output2 by http command, here is url:
http://10.10.10.135/cm?cmnd=Power2%20state        will feedback: {"POWER2":"OFF"}

this rules sample will set KC868-A16 input1 toggle output1.

for example if input1 -- toggle --> output1:

rule1 on PCF8574-1_INP#D0=0 do power1 toggle endon
rule1 1

if input2 -- toggle --> output2:

rule2 on PCF8574-1_INP#D1=0 do power2 toggle endon
rule2 1

if input3 -- toggle --> output3:

rule3 on PCF8574-1_INP#D2=0 do power3 toggle endon
rule3 1

here are setting photos for sample rule1:

   
   
   
   

I was told to post here what I am trying to do. My parts are:
1. K868-H32L
2. Tp-link wireless router
3. ESP8266
4. Old PC

Scenario: I tried using the ESP8266 with the K868-H32L to link to Alexa. However, Alexa could only detect 10 switches out of the 32. Kincony notified me that ESP8266 is only limited. Now, I have a bunch of OLD PCs lying around with ready windows. Kincony told me I can use PC with red NODE. I managed to install and sign up for red-node. Again, Kincony support told me that I cannot use MQQT with K868-H32L. I am posting here because I need help how to set-up red-node using TCP-out.

The videos posted are MQQT are very similar to TCP-out. I followed it however, TCP-out would not connect to my 868-H32L, I connected PC and H32L relay to LAN of wireless router, Internet access thru WAN of Wireless router, Alexa module connected to Wireless Router. Everything is working with the KC868-H32.exe pc software so I know parts are working.

I need to automate the system via Alexa. Kindly assist how to connect 868-H32L relay to red-Node via TCP-Out. The programming of Alexa to red Node is already in the MQQT videos.

Attached Files

Thumbnail(s)
                       

1．MQTT communication structure diagram

   

KC868-Server--------

publish message: status of switch (status topic)
Subscription message: turn on / off command (command topic)


home assistant------

publish message:  turn on / off command (command topic)
Subscription message: status of switch (status topic)

2．KC868-Server digital output , digital input , analog input config sample code in configuration.yaml

# Example configuration.yaml entry
switch:
  - platform: mqtt
    name: 'output-1'
    unique_id: output-1
    state_topic: 'server/ xxxxxxxxxxxxxxxxxxxxxxxx /state'
    command_topic: 'server/ xxxxxxxxxxxxxxxxxxxxxxxx /set'
    payload_on:  '{"relay1":{"on":1}}'
    payload_off:  '{"relay1":{"on":0}}'
    value_template: '{{ value_json.relay1.on }}'
    state_on: 1
state_off: 0


binary_sensor:
  - platform: mqtt
    name: 'input-1'
    unique_id: input-1
    state_topic: 'server/ xxxxxxxxxxxxxxxxxxxxxxxx /state'
    value_template: '{{ value_json.input1.on }}'
    payload_on: 1
    payload_off: 0


sensor:
  - platform: mqtt
    name: 'analog-1'
    unique_id: analog-1
    state_topic: 'server/ xxxxxxxxxxxxxxxxxxxxxxxx /state'
    unit_of_measurement: 'v'
    value_template: '{{ value_json.analog1.value }} ' 

Note: xxxxxxxxxxxxxxxxxxxxxxxx is UID of controller, just replace with your device UID. You can find the UID in ethernet setting.

3．KC868-Server 16 channel output, 16 channel digital input, 4 channel analog input all use in configuration.yaml


  KC868-Server-home-assistant-config.txt (Size: 8.15 KB / Downloads: 921)

KC868-Server 16 channel output, 16 channel digital input, 4 channel analog input all use in configuration.yaml

  KC868-Server-home-assistant-config.txt (Size: 8.15 KB / Downloads: 528)

Note: xxxxxxxxxxxxxxxxxxxxxxxx is UID of controller, just replace with your device UID. You can find the UID in ethernet setting.