Hello all.

System:
KC868-A4 board with Nextion NX8048P050-011C-Y display.

Problem:
UART communication with this particular display. Other 2.4 inch Nextion works well.
Possibly issue with TTL level.

Electrical connection info:
RS323 chip (SP3232EEN) removed from the KC868-A4 board.
The RX and TX of Nextion are connected directly to GPIO_16 and GPIO_17 of ESP32.
We have tried to use other GPIO's of ESP32. Nothing works.

The solution which works:
Replacing ESP32-S with original ESP32-WROOVER.

Question:
1) Can anyone suggest a simplier solution?
2) Is there any way to force Nextion to operate on 3.3v TTL level?
3) Can we connect Nextion to RS232 connector directly without removing SP3232EEN?

Hey,

i'm searching for a solution to control warm white/cold white 24V stripes from KC868-A... (esp32). can you recommend something?


in the past i use H801 to control 24V stripes. But i want to control it over your kc868 board to have a direct connection from switch to lamp

1. IPCamera SDK update
2. Adaptation iOS15.3

you can update by Apple Store, search "KinCony Smart Home"

improvement:

1. fixed bug when use by "KinCony-SCAN_Device" tool on PC, the MQTT server ip and port parameter will auto change to PC's IP address and port:4000 by error.

KC868-COLB V1.10 firmware download:

  AD_COLB_V1_1_10_220209.zip (Size: 41.58 KB / Downloads: 668)
download the ZIP file , unzip update the bin file for KC868-COLB logical controller.

Hi there,
Just installed Node-Red and Mosquitto on Windows 11 PC, on the same setwork as my KC868-32BS, 

Everything is green on the Node-red editor, but when I use the Alexa app to turn on or off the relay it doesn't work, I used only the Ethernet to configure MQTT. 

Thanks much

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Hello everyone
I would like to understand the correct configuration to control your devices
I want to write my own home automation program, I will use lazarus (freepascal)
I bought the following modules:

•  KC868-H16B
  
• KC868-H32B
  
• KC868-COLB
  
• KC868-D8
  
• Push button switch module
  

• Pushbutton switch module with KC868-COLB through RS232
  
• KC868-COLB with KC868-H32B through RS232
  
• KC868-COLB, KC868-D8 and KC868-H16B through the LAN network to PC
  

can i use KC868-H32BS  relay controller board TO  control RGB LED strip without dimmer relay ? 

how i can do it ?

Hi,

My current light switches are based on the Superhouse.tv devices. They have a +5 supply to the light switch. The supply is +5 pullup and when the button is pushed - they pull to Zero. 
Is it possible to do this on these Digital Inputs ? 

Thanks

Hi, does it board has any support of firmware update?
Which are my options to connect via HA OS?

Please help me to select proper kit for my project based on following  requirements:
- 26 inputs from light switches  (ON/OFF)
- 5 inputs from light switches  (ON/OFF)
- 2 inputs from heating termostats (ON/OFF)
- 1 inputs from position of heater relay (ON/OFF)
- 1 input for DS18B20 wire
- 8 inputs from electric system relay position status (ON/OFF)
- 19 inputs from window contact sensors  (ON/OFF)
- 26 outputs for lamps
- 3 outputs for ventilators
- 7 outputs for heating system
- 3 outputs for electric system
- 7 outputs for electric system

I need 62 inputs and 46 outputs and possibility to develop any code like it is possible in KC868-A16.
Maybe it is possible to connect input and output modules to KC868-A16 to extend pins?