Beginners questions

[io2345]

I understand, that I can use this firmware on my TH03Pro-device - rather than the original tuya one. How can I now access the data sent from the device? Is it transmitted via Mqtt, or how does it work?

[juha63]

It stays Zigbee and has to be paired with a Zigbee gateway. The way you process the data from there is up to you. If your gateway supports MQTT, you can use it.

[io2345]

This might be my main source of doubt, that this will be my first Zigbee device. Only have Wifi devices here. So no idea, how things work with Zigbee: Does the protocol itself care for the data, no matter if it's running on Tuya or whatever? Where will the data show up in an ioBroker-system?
About the gateway: I have a Moes USB-stick model here that says MHUB-FL-U Multi-mode. No idea, if it supports Mqtt. Maybe I don't even need that. I just have to get the temperature value out of the TH03Pro and have it accessible in ioBroker. Of course it would be nice, if the display on the device would still be working and if battery life isn't too bad with the alternative firmware.

[juha63]

What do you expect us to do?

Looks like you have a working WIFI solution? Why did you buy a sensor you can't handle then?

Don't get me wrong, but if you are not willing to deep dive into these questions yourself (i.e. read the fucking manuals), you should better buy another WIFI sensor which you are used to.

[juha63]

https://www.reddit.com/r/homeassistant/comments/1f1munz/moes_multimode_gateway_compatibility/

[m4milaad]

If you’ve replaced the original Tuya firmware on the TH03 / TH03 Pro with a custom firmware (Tasmota, ESPHome, OpenBeken, etc.), the way you access sensor data depends entirely on which firmware is now running on the device. The hardware itself doesn’t dictate the protocol , the firmware does.
Tasmota

Yes! Tasmota publishes all sensor readings via MQTT once you configure your broker under
Configuration → Configure MQTT.

Typical topic:

tele/<device_name>/SENSOR

Example payload:

{
  "TH03Pro": {
    "Temperature": 22.4,
    "Humidity": 48
  }
}

Tasmota also supports reading values via HTTP (/cm?cmnd=status%200).

[juha63]

As far as I know, Tasmota etc. will mainly run on Espressif ESP (WiFi) devices. This firmware here is made for Telink TLSR825x chips (BT/Zigbee). Tuya devices are often offered as WiFi and/or Zigbee/BT variant. Don't mix them up, they have different chips inside!