Support for TH01Z [SZ-T04]

[mako777]

Hi,
I've got a few units labeled as Tuya SZ-T04, in Z2M they are recognized as TH01Z
https://www.zigbee2mqtt.io/devices/TH01Z.html
https://smarthomescene.com/reviews/zigbee-temperature-humidity-sensor-with-a-screen-sz-t04-review/

Is there any chance for support for this device ?

I've disassembled it and found following chips:
Zigbee: Tuya ZTU (under the shield I found chip labeled ZHU2318)
MCU: UM8005
Sensor: CHT8305
LCD driver: GNV1792S

I assume that support for this device will be problematic beacuse the additional MCU, but maybe remove the MCU and connect everything to the ZTU module like you already did in few devices ?
Made some pictures:

[pvvx]

Unlike existing thermometers, your device needs to define additional clusters to set the time. This is not yet in line with the current ZigbeeTLc project.

Moreover, we don’t have TH01Z [SZ-T04] for sale.

As a result, you can create the firmware yourself, based on the available source codes.

[mako777]

I see. But how about to get rid of the clock, honestly I don't really care about the clock, we can just not use it.
I can make modifications to the board if they are needed and do some testing.
I've looked for this unit and they are for sale on ali: https://www.aliexpress.com/item/1005005118965547.html
How do you think, is this feasible ?

[pvvx]

The seller on your link to Aliexpress does not deliver to my region.
And its price is higher than other thermometers with alternative firmware, and with higher quality displays and AAA battery options...
Considering the cost of alternative thermometer options, it doesn't make sense to make so many changes to the PCB.

[mako777]

Well, this is understandable, I maybe go the route of creating this myself, but don't know jet.
Thanks for the answers and have a good day.