[Solved] Tuya App Not Controlling 4-Channel Zigbee Relay: Seeking Documentation and Solutions

Hi,
I bought a four channel receiver with Zigbee relays today, paired it with the Tuya app and that's it. Control from the app doesn't work - from the app I am unable to control the relays. Only when I control them with the buttons on the board does the app tell me they are on. Tuya app up to date, controller paired again, no results. On the other hand, the app controls other devices correctly, scenes, dependencies etc work.



If anyone has any documentation from this marvel, I would ask them to share. What I am mainly interested in:
- a procedure for removing the remote controls (without resetting the device)
- some kind of software update, maybe an alternative software that will allow control from Tuya and similar applications

What do you have in your settings?

Such o:

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None of these settings allow themselves to be changed.

Try switching on these relays and then check.

No changes. When I go into any of the settings, e.g. "relay status", I can change OFF - ON - Remember last status. After changing, I confirm with the "Confirm" button and there is no change.

Maybe a matter of updating the software on the Zigbee module? What is the best way to go about this?

Well, what is that USB socket for?

For the power supply, only the VCC line is connected.

The connectors under the UART are also not visible, it remains to read the circuit models.

The UART appears to be in the form of four pins, above the third and fourth buttons. The MCU has no markings. Just do you need to get to it, or is it more of a ZigBee module?

I think it's just the WiFi module with the sticker on it.

ZigBee module.
Anyway - no one has had to deal with such a device? No one has had a problem with control from Tuya and similar applications?

The gateway you are using supports ZigBee 3.0?

Yes, it supports ZigBee 3.0, other devices it controls without problems.

prosiak_wej wrote:

If anyone has any documentation from this marvel, please share.

The instructions are recorded on video. The stop-frame reads: https://youtu.be/xW9HUlDXNGw

The device is supposedly 1:1 the same and it doesn't match up with what the author of the video says - that it is a controller giving only a pulse. With the M button you can change the operating mode between: impulse - on / off independently - on / off dependent (like the Isostats on the old radio). Nevertheless, resetting the device, adding it to the app etc. works as instructed, reverse signalling works (from the physical button to the app), and control from the phone to the relays does not work. Regardless of the mode of operation.

On Aliexpress/Allegro you could buy two versions: one for motor control and a 'classic' on/off version.

Added after 1 [minute]: .

prosiak_wej wrote:

With the M button you can change the operating mode between: pulse - on / off independently - on / off dependent (like the Isostats on the old radio).

I don't remember exactly: is this change remembered after a power loss?

This "motor control" version of it, has an M button, which is even marked in the manual, and whose operation I described post above.

Which still has no effect on the control from the app (or rather the lack of it).

Did you remove and add again? If so, did you do this at an interval of, say, one day?
Does the gateway have up-to-date software? Also do a reboot of it.

Everything you mentioned I have done. All the devices (including the gateway) report that there is no newer software version. I reinstalled Tuya, added the devices to it again, in the meantime I used the Smart Life app - to it I added everything I had in Tuya (after uninstalling Tuya at the time and resetting the devices, including the gateway). I also added a room, to which I assigned the faulty controller. Regardless of the app - the virtual button on the phone screen can be seen to 'click', but this does not generate the relay switching on and giving feedback that it is on.

In the Tuya app, in the window of this driver at the bottom you have Settings. How do you have it set up? I have:
"OFF
indicate switch
OFF
OFF
OFF
OFF"

Post three - I later added that none of these settings allow themselves to be changed.

Then I think you have exhausted all possibilities. What's left? A return? An exchange?

What else did I check... On which pins the Zigbee module puts out a high state, which activates the relay, and on which pins it expects a low state from the buttons on the board:

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The high states from the Zigbee go to the MCU, which turns on the relays. When I applied a high state to one of the K pins with a wire, the relay switched on for the duration of the jumper hold, but there was no indication of switch-on in the application. The buttons are also connected to the mystery MCU. What remains? Soldering out the parts, reprogramming the Zigbee module. Unfortunately, the four pins that look like a UART go to the MCU and not the Zigbee.

Today I accidentally solved the problem. I found another Zigbee gateway in a lumpy shop that cost me like 2zl.... I connected it to the Tuya app, added the switch from the topic to it and it worked just fine. Below are photos of the gateway that worked:

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