KinCony ESP32 application course is published on the udemy online course platform for everyone to learn for free. At the same time, we will publish on the online course platform of Espressif's official website, and we will continue to produce more courses based on ESP32 applications.
https://www.espressif.com/en/ecosystem/i...ge/courses

can this controller be updated from version 4.13.26 

allow for MQTT option?  4.13.26  4.13.26 4.13.26

Hi. I'm planning to connect the protection fuses before the relays, and not after as shown in the tutorials. This way I would be able to have one fuse for a group of channels (for example all lights in an area/room).

I do so because of 2 reasons: (1) Such connection is viable in my house because, for example, the wiring to all the lights for the living room is being passed through a single connections-box. Using wiring of different protected circuits in the same box is prohibited by law in my country. (2) Grouping circuits use fewer fuses and save space in the power distribution box.

Can such a connection cause any problem? The relays module has a varistor per channel, and I read online that a fuse has to be connected over the circuit with the varistor. My question regards the location of the fuse. Schematically, I'm asking whether it is critical to have the fuse on the closed-circuit between the varistor and the device (like you suggest in your tutorials), or is it also fine to connect the fuse to the feeding phase (leaving the closed circuit between the varistor and the consumption end device without any protection, as shown in the diagram below). I don't really understand the theory behind the varistor's operation, so I don't know if it may be a problem leaving it with the device in a closed circuit without protection on it.
   

Thanks for the help!

Hi.
I noticed there are blue capacitors attached to the load terminals of the OMRON relays module (can be seen in the picture attached below).
Can you please explain what is their purpose? what they are needed for?

   

I have set up my KC868-H32B with MQTT in late august 2021 (I have over a hundred devices working flawlessly with MQTT). I use the inputs to monitor doors and gates and the relays to act as push buttons or switch on/on devices that do not remain on for a long time nor change often.



In the last two weeks, the KC868 started to freeze (not accepting MQTT commands nor reporting status).
Power-cycling it solved the issue at first but not anymore.

I tried to upgrade the firmware today and it did not change anything.

I configured the HC868-32B to use UDP (and not MQTT anymore) and started issuing commands as described here but it also stops working after about 10 mn. Moreover, the Web interface does not answer anymore either (only ping keeps working).

My network and my MQTT broker are working OK (as mentionned over a hundred MQTT devices are working flawlessly).

Please advise.

Do you see the solid state relay voltage regulator series such as SSR-DV- 10
10Vdc i/p
240 VAC o/p

Is working fine with low current load? And it is safe and to operate?

Please answer 1. Yes   2. No

Please discuss your experience and practice with KC-868-D8 dimmer controllers.

Hi

I came across these OMRON relay modules with 32 channels. It can save lots of space in the power distribution box. Much more compact than using 24 channels module + 8 channels module. What do you think? Will you consider selling these in your store? I would prefer to buy your products, as I trust your quality more than some random store online. Hence I ask here first.

A picture is attached below. Here is an example of such a product: https://www.aliexpress.com/item/1005001855288063.html (hope it's fine to share here a link)

Technical design considerations:
* Its length is 300mm, while the 16-channel module (sold on KinCony store) length is 248mm - so it's just 5cm longer - very acceptable. There are 16 relays in each line (exactly like the 16-channels module), but there is an extra control connectors strip on the side - that's why the extra 5cm is needed.
* Its height is 120mm, while the H32B* modules are 117mm high - very reasonable! 
* Even though the product in the example uses 10A relays (G2R-1), still the G2R-1-E relays (16A as used by KinCony's 16-channels module) can also be used in the 32-channels module design. Both kinds (G2R-1 for 10A and G2R-1-E for 16A) have the same width (13mm) & length (29mm), and hence the same relay socket dimensions.
* I don't think the relays produce too much heat to be any problem placing them close to each other. Please fix me if I'm wrong.

Thanks!

Attached Files

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Is the KC868- D8 dimming unit can be controlling the brightness (dimming) good with SSR relay?
The Kincony youtube clip is showing the led dimming driver is more smoothly dimming than the SSR.
Can you please indicate the type of SSR that can be used with Is the KC868- D8 dimming unit to control perfectly the brightness and input and output voltage range dc to ac ?
This is attached one are available in local market 
SSR-40 DA-H i/p 3-32VDC and o/p 90-480 V A/C

Can i use this module for controlling the KC-868-H32BS for controlling 220 volt load using 10A relay with 12 V DC coil from local market, see the attached photo.

Is the KC868- D8 dimming unit can be control the brightness (dimming) good with SSR relay?

For d8 dimmer , is the ssr is varying the voltage from 0- 10v dc and the output ssr from 0- 220v am i right

I found this in the local electronic store can replace one in the video of ssr dimming( bightness)

The Kincony youtube clip is showing the led dimming driver is more smoothly dimming than the SSR.
Can you please indicate the type of SSR that can be used with Is the KC868- D8 dimming unit to control perfectly the brightness and input and output voltage range dc to ac ?
This is attached one are available in local market 
SSR-40 DA-H i/p 3-32VDC and o/p 90-480 V A/C
Please not the voltage range of the product and the BS output voltage range !