here is Tuya licence for "KCS" firmware , it can let your KC868-A series board remote control by internet.

1:telll us your email, we will send the licence to your email

2:tell us your area(choose from :China/Westen US/Eastern US/Central Europe/Western Europe/India)

IMPORTANT: check for your tuya account, which REGION you have registered.

Check in your tuya or smart life mobile phone app: Me -- Settings -- Account and Security -- Region

according to the "Region" visit here (https://developer.tuya.com/en/docs/iot/o...i0ku9l07qb) to check your server location.

           

if you really don't know how to check, just send us your tuya or smart life app account name, we will check for you.


3:tell us you model(choose from Kincony A4/A6/A8/A8S/A16/A32/A64/A128/E16S/AI/AK)

4: The license has no time limit, and the tuya platform provides corresponding services and guarantees

5:Once sold, it cannot be returned or refund

6:One licence only for one product


Tuya internet cloud server locate in 6 positon in the world:
Location-A: China
Location-B: Western US
Location-C: Eastern US
Location-D: Central Europe
Location-E: Western Europe
Location-F: India

please tell us which server location your app account used. such as if your account is "Western Europe" ,tell us "Location-E: Western Europe".

if you want to order, please contact with us, you can pay by PayPal or Bank account. Every  Tuya licence for one board, 10usd/pc, no time limit.

Paypal account: hificat@163.com
after you paid 10usd, please send email to web@kincony.com add these information:
your paypal paid number and screen photo, board model, server-location and your email. such as:
KC868-A4 ,   Location-D: Central Europe   receive licence email: xxx@xxx.xx

or you can order tuya license from our online store: https://shop.kincony.com/products/tuya-l...duct-model

here is demo config file for KC868-A32 , integrate to home assistant by MQTT using "KCS" firmware.
   

  A32-mqtt-home-assistant.txt (Size: 23.7 KB / Downloads: 951)

Here is "KCS" firmware for KinCony KC868-A series (ESP32) board.
How to download and use, online guide: https://www.kincony.com/kcs-firmware-esp32-board.html
v1.0.15 improment:
fixed bugs with input port and MQTT state format.

  KC868_A4_V1.0.15.zip (Size: 736.46 KB / Downloads: 778)
  KC868_A6_V1.0.15.zip (Size: 743.63 KB / Downloads: 785)
  KC868_A8_V1.0.15.zip (Size: 747.45 KB / Downloads: 723)
  KC868_A8S_V1.0.15.zip (Size: 754.7 KB / Downloads: 809)
  KC868_A16_V1.0.15.zip (Size: 754.89 KB / Downloads: 773)
  KC868_A32_V1.0.15.zip (Size: 755 KB / Downloads: 720)
  KC868_A64_V1.0.15.zip (Size: 754.94 KB / Downloads: 791)
  KC868_A128_V1.0.15.zip (Size: 755.02 KB / Downloads: 660)
  KC868_AI_V1.0.15.zip (Size: 749.38 KB / Downloads: 593)
  KC868_AK_V1.0.15.zip (Size: 737.36 KB / Downloads: 782)
  KC868_E16S_V1.0.15.zip (Size: 754.9 KB / Downloads: 748)

Hello,
I have a small question about colb temperature input, what kind of sensor i must use since it has 3 terminals? So i cant use temperature sensor with 2 wires? Or how?

I have just received a brand new KC868-A4 board, and I have found a trouble when trying to upload any firmware, not only with Arduino IDE, but also with Espressif tool. It is a rather well known issue (several posts in internet) , common to many ESP32 modules, that manifests with a failed entry in flash mode, with eternal looping"Waiting for packet header...".  One brut force solution, that worked well by my board is to maintain depressed the boot/flash button -S2-during whole upload process. The other, following Internet posts, is to put a supplementary Cap 1uF at EN pin3 of esp32 module. That worked well also in my case, this capacitor coming in parallel with the already equipped C4 (1uF) of the auto download circuit on my kc868-A4.
Does it mean that my board came faulty from factory, or is the design of the auto download circuit marginal ? I would appreciate Kincony's sincere report and recommendation for this issue.

“KCS” means “KinCony Super” , this is a new firmware developed by KinCony for KC868-A series products in 2023.

we have released firmware for KC868-A4, KC868-A6, KC868-A8, KC868-A8S, KC868-A16, KC868-E16S, KC868-A32, KC868-A64, KC868-A128, KC868-AK, KC868-AI.
We will continue to update firmware according to user feedback.

download at here: https://www.kincony.com/forum/forumdisplay.php?fid=40

Here is "KCS" firmware for KinCony KC868-A series (ESP32) board.
How to download and use, online guide: https://www.kincony.com/kcs-firmware-esp32-board.html

  KC868_A4_V1.0.10.zip (Size: 702.6 KB / Downloads: 1107)

  KC868_A6_V1.0.10.zip (Size: 708.37 KB / Downloads: 900)

  KC868_A8_V1.0.10.zip (Size: 711.38 KB / Downloads: 851)

  KC868_A8S_V1.0.10.zip (Size: 718.64 KB / Downloads: 782)

  KC868_A16_V1.0.10.zip (Size: 718.88 KB / Downloads: 935)

  KC868_A32_V1.0.10.zip (Size: 718.94 KB / Downloads: 867)

  KC868_A64_V1.0.10.zip (Size: 718.9 KB / Downloads: 684)

  KC868_A128_V1.0.10.zip (Size: 718.99 KB / Downloads: 641)

  KC868_AI_V1.0.10.zip (Size: 713.21 KB / Downloads: 616)

  KC868_AK_V1.0.10.zip (Size: 702.44 KB / Downloads: 624)

  KC868_E16S_V1.0.10.zip (Size: 718.88 KB / Downloads: 823)

Hello, can someone please show me how to connect this error
A fatal error occurred: MD5 of this file does not match data in flash! 
 I have been trying to upload my code from arduino IDE but it keeps on complaining about that error

Which and Where is the binary file to be flashed for the board KC868-A8S  ? 

Can this be used with RS-485 port to Read DI and SET/REST  relays?

Thanks.