KC-868 COLB - I do not see IP adress

[Alois Láska]

Hi,
Has the COLB, what we disscused above, the MQQT support?
If yes, how to switch it on?
We are using currently on WiFi - http tcp server - communication what works, we used some example form your web, but there are some instability in parsing time to time, and we believe, that MQQT is more stable and reliable,

Software version is 4.13.34

Thanks for support!

[admin]

COLB support mqtt, but that for analog input ports and DS18B20 temperature sensors. if use mqtt, need to use ethernet.
here is COLB mqtt document: https://www.kincony.com/download/KC868-C...ommand.pdf

[Alois Láska]

Hi, Please give me an advice how to switch my COLB to ethernet mode. I sent in this thread photo of my COLB. You sent me link to the configuration manual on web https://www.kincony.com/how-to-use-kc868...oller.html but it is for COLBS and the leds is diffrent and behaviour also...
Thanks

[admin]

just connect COLB to router by ethernet cable, then try to login by 192.168.1.200 or you can use kincony scan device tool to find the ip address.

[Alois Láska]

just connect COLB to router by ethernet cable, then try to login by 192.168.1.200 or you can use kincony scan device tool to find the ip address.

thanks it works but my IP scanner does not show the name of new device and I did not realized an add new device with new IP address...

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I have another trouble with COLB, trying to solve it with all my knowladge and Chatgpt too :-).
I have 5 temperature sensor connected to the COLB Dallas DS18B20. Connected trough calm family house (no industry), connected with UTP cable CAT5 app 15-20m lenght. I sorted out that data and GND is conected with twisted pair green and greenwhite. Power supply is connected with orange and I used also orangewhite for GND too.
But still channel 1 and 3 does not want to communicate with sensor.
When I connect sensor 1 or 3 to the channel 2, it si sucesffuly meassured.
When I connect sort just sensor to the channel 1 or 3 it is aslo measured.

What is diffrence between 1 and 3 channel? Please any advice? I am preparing aslo to add some capacitor between VCC and Data acording some advice... But may be you will have some feedback what to do...
Thanks

[admin]

suggest you use thick wire, you can see this video about long distance with DS18B20: https://youtu.be/4DfJnC3Wd2k

[Alois Láska]

suggest you use thick wire, you can see this video about long distance with DS18B20: https://youtu.be/4DfJnC3Wd2k

thank you for prompt answer, but I think it has no sence to use thick wire... The sensor has almost nothing consumption. I believe it is a noise in signal communication caused by dropping voltages what cause no communication. I will try to search more info about that and try to add capacitotrs on the end of the line on VCC-GND and may be some small one data-gnd 
Or do you have any another advice?
I can not exchange the wires to thick one, because the fininshed house and I have to use cables what are in the place...
Thnak you

[admin]

Because the voltage will decay when the cable is long. usually < 3 meter.

[Alois Láska]

Because the voltage will decay when the cable is long. usually < 3 meter.

Voltage drop only, when there is a consumption with some huge current. If there is almost 0 consumption like 18b20, there is no drop of the voltage of course. elektrotechnic basics...   
I want to find smart solution, to remove the unstability in communication. I measured at the end of long wire 3,3V therefore there is no drop of the voltage.