Hi,

Do you have a scheme to explain how to connect a NTC Thermistor sensor B3950 10K to a KC868 S series (the wire and if something else is necessary to add) ?

thanks.

Modbus protocol:

A. input register function:

temperature : 16bit unsigned integer register
humidity: 16bit unsigned integer register

address    function
0000H        temperature value
            unit: ℃
            fixed 1 decimal
            (1) >0℃: register data<10000
                          for example: register value=250, actual temperature: 250*0.1=25℃
            (2) <0℃: register data>=10000
                          for example: register value=10250, actual temperature: -1*(10250-10000)*0.1=25℃
------------------------------------
0001H        humidity value
            unit: %RH
            fixed 1 decimal
                          for example: register value=500, actual humidity: 500*0.1=50(%RH)
------------------------------------
0002H        temperature value
0003H        unit: ℃  decode: 32bit float data
------------------------------------
0004H        humidity value
0005H        unit: %RH  decode: 32bit float data


B. Hold register function:
The contents of the register are saved when power is turned off. The holding register is a readable and writable register. The value in each register is a 16-bit unsigned integer.

address    function
0000H        temperature value
            unit: ℃
            fixed 1 decimal
            (1) >0℃: register data<10000
                          for example: register value=250, actual temperature: 250*0.1=25℃
            (2) <0℃: register data>=10000
                          for example: register value=10250, actual temperature: -1*(10250-10000)*0.1=25℃
------------------------------------
0001H        humidity value
            unit: %RH
            fixed 1 decimal
                          for example: register value=500, actual humidity: 500*0.1=50(%RH)
------------------------------------
0002H        temperature value
0003H        unit: ℃  decode: 32bit float data
------------------------------------
0004H        humidity value
0005H        unit: %RH  decode: 32bit float data
------------------------------------
000AH        RS485 bus address(1-255), default:1 
            Note: This parameter is saved after power-off and will take effect after power-on again after modification.
------------------------------------
000BH        Baud rate setting:
            0:4800  1:9600(default) 2:14400 3:19200 4:38400 5:56000 6:57600 7:115200
            Note: This parameter is saved after power-off and will take effect after power-on again after modification.
------------------------------------
003DH        Parity settings
            0:None(default)  1:odd parity 2:even parity
            Note: This parameter is saved after power-off and will take effect after power-on again after modification.

modify RS485 setting command:

register:
1001：SLAVE address 1-250
1002：Baud rate: baud_arr[8] = {4800,9600,14400,19200,38400,56000,57600,115200}
1003: Parity bit: parity_arr[3] = {UART_PARITY_NONE,UART_PARITY_EVEN,UART_PARITY_ODD}


how to remember RS485 address if you forget it.
1: every time power on will output board information by RS485 (9600,8,N,1) if you forget the board's address.
2: hold on button > 2 seconds, will reset to factory setting, default RS485 address=1

KinCony TS Temperature and humidity Application download

Hi,

I came across your Youtube channel and was wondering if you would help me design a solution for my Off Grid Expedition Camper Truck.

I would like to monitor and ultimately control all items via Alex Hub.

I am currently in the process of building the vehicle and all electrics are going to be supplied using Victron System (Inverter), via Batteries/Solar/240V hook up.

The system will have a 240V AC requirement with 17 Circuit Breakers and a 12V Circuit with 36 fused (Spade type or can be railed DC Breakers).

Is this something you can help with?

I wait your reply.

Many Thanks

Dion Mack

hi, i would be interested in using kc868 M16-V2 with home assistant. but i would need to know the power of each channel (and not the current) can the board calculate it for each channel?

Good afternoon, I have a Kincony F16 and I am interested in removing Tuya from the .yaml file and keeping only ESPHome. I do it another way to connect from outside the home and I don't need Tuya. Could you tell me exactly what I have to remove so that nothing remains of  en el archivo .yaml "F16-HA.txt". I'm afraid I won't be able to connect if I delete something by mistake. Thank you.

IIC Bus:

SDA:GPIO11
SCL:GPIO12

PCF8575:U22 (output1-16): i2c address:0x25

PCF8575:U17 (input1-16): i2c address:0x24

24C02 EPROM i2c address: 0x50

-----------------

1-wire (pull-up resistance on PCB):
1-wire1:GPIO8
1-wire2:GPIO9
1-wire3:GPIO10
1-wire4:GPIO15
1-wire5:GPIO16
1-wire6:GPIO17
1-wire7:GPIO18

-----------------

Ethernet (W5500) I/O define:

clk_pin: GPIO42
mosi_pin: GPIO43
miso_pin: GPIO44
cs_pin: GPIO41

interrupt_pin: GPIO2
reset_pin: GPIO1

--------------------
RS485:
RXD:GPIO14
TXD:GPIO13

Hi all!
I received my KC868-A16 board and now experimenting with it. My goal is to use it for Home Assistant.
Digital inputs and outputs work fine, but there are some confusing points with analog inputs.
I would appreciate clarification.

1. I used the lines from the example .yaml file and it turned out that because of the lines
------------------------------------
    filters:
      - lambda:
          if (x >= 3.11) {
            return x * 1.60256;
          } else if (x <= 0.15) {
            return 0;
          } else {
            return x * 1.51;
          }
------------------------------------
the measured voltage values were greatly inflated. So I removed these lines from my .yaml file and the voltage values became correct.
What were these lines in the original example for anyway?

2. When the same voltage is applied simultaneously to all four analog inputs, the spread of readings between them is no more than 5%. This is very good accuracy, but can it be increased by changing the parameter "attenuation: 11db" ?

3. When connecting each of the analog inputs to ground, the voltage value is not 0V but 0.14V
Is there any way to fix this?

4. And the main problem. When the input voltage changes from minimum to 3.14V, its value is displayed correctly. However, when the input voltage increases from 3.14V to 5V, it stops changing and always shows 3.14V, which is obviously wrong.
What is the problem here?

Hello

Can you tell me the resolution on the analog inputs.
Because for 1.5v in I visualize 2.01v which is 30% error..
That's a lot

Board A16

Attached Files

Image(s)