Hello admin
I am using a B16 smart relay controller with your KCS v3 firmware. I am integrating it with Home Assistant to control a Somfy WT roller shutter.
For this application, I need to send an MQTT command to activate a relay for a specific duration (e.g., "turn on output1 for 3 seconds, then turn it off automatically").
I've reviewed the KCS v3 MQTT protocol document (specifically, section 1 about setting ON/OFF of a digital output channel). It shows how to turn relays ON or OFF:

KinCony KC868-A8v3 ESP32-S3 smart controller based on ESP32-S3-WROOM-1U (N16R8) wifi chip. It have 8 channel digital input and 8 channel relay output, 4 channel 1-wire GPIOs. One SD card using SPI bus. KinCony KC868-A8v3 include DS3231 high precision RTC clock chip. LCD display will show wifi and ethernet IP address. A8v3 have RS485 port. You can write any code by Arduino IDE / MicroPython / ESP-IDF development tool to ESP32S3 module. We will supply Arduino / ESP-IDF demo code for different samples. Everyone can modify and change the code for your own smart home automation system project. it support use by ESPHome for home assistant or tasmota firmware for smart home automation DIY. A8v3 use KCS v3 firmware, it support home assistant auto discovery function by MQTT, so without write any config code (zero code) for home assistant. KCS v3 support Apple HomeKit.

Model No. KinCony KC868-A8v3
Description: KinCony 8 Channel ESP32-S3 Relay Controller – A8v3
Power supply: 12/24V DC
Processor: ESP32-S3-WROOM-1U (N16R8)
PCB Size: 105mm*148mm
interfaces: Ethernet(RJ45)-LAN 100Mbps IPv4/IPv6,WiFi,RS485,Bluetooth,USB-C,LCD, i2c extender
RTC: DS3231 high precision chip (battery socket on PCB)
SD Card: SPI bus
Installation method: DIN RAIL (with plastic shell)
LCD: SSD1306 I2C display
Outputs:
8CH Relay Outputs, every channel relay's load MAX250V10A COM,NO,NC
Inputs:
8CH dry contact inputs (optocoupler isolation, long distance circuit for MAX 500 meters cable)
3 buttons: S1:Tuya S2:ESP32 Reset S3:ESP32 Download (GPIO0)
1-Wire GPIO: 4CH (with pull-up resistance on PCB)

Good day
Some time ago I bought KC868 A32 and today I tried to connect to the board for the second time. I updated the driver Regarding CH341. On one of the laptops I have W11 and on the other W10/
1. I am trying to scan AP via wifi and it is not on two laptops and a phone (there is no such network - kv868)
2. I am doing a scan (IP scanner) through the router and directly connected to the laptop socket - no effect.
3. I am trying to scan if UPD Scan will show the board but it does not see it
Please help.

I'm trying to connect another 6 channels to the M30 using an external modbus rtu energy meter.

I've configured the external meter as ID 16 (0x10), 38400 baud, and can query it directly.

But when I configure in yaml, I don't get any result.

The relevant part of my config is as follows:

Hello

I am unable to add a16v3 board in https://mq.kincony.com/qq/

is there any subscription for this ?
please let me know
Imran Alam

I just received the A6v3 board but it won't connect to my computer properly. I have to reconnected the cable about 30-40 times before I get a working serial connection. I have tried 5 different usbc and usba cables and it makes no difference. I also tried it on 2 computers using all available usb ports. I have also tried reinstalling all USB drivers. 

I have never had a problem with any ESP32 board including A6v1, A4 or any esp32 dev module including the espressif esp32-s3 devkit module.

What am I doing wrong or is this board faulty?

Board was purchased from Kincony controller store on aliexpress.

Hello

I have a Kc868 A16 and i use esphome on Home Assistant.

My EPS Home is online but with this yaml file isn't possible to have the control of input digital. ? i shunt the ground of input one ...  no reaction  

binary_sensor:
  - platform: gpio
    name: "aio--input1"
    pin:
      pcf8574: pcf8574_hub_in_1
      number: 0
      mode: INPUT
      inverted: true

Thank you for the help

hello

I have KC868-A16 board (green pcb, not v3)
To this board I first upload KCS firmware - latest possible V2.2.13
Firmware loaded, first login - no problem

When I put one or all outputs no one light turn on 
Why ?
(nothing connected to outputs)

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Hello.
I am trying to send the current temperature of a sensor to an external server. In order to do that, I set up a custom HTTP POST protocol with an URL to a PHP webpage which processes the received data.
Unfortunately I am lacking of information of how to send values via HTTP POST. There is a good documententation about how to request data from the board, but I was not able to find information about sending data from the board to an external URL.
It would be great if you could help me.
Kind regards,
Seb

I would like to request a KC868-A4 Free Sample to start a new project (B) for a smart home product for clean air.
Thank you.