How to add new entity to an existing device?

[bravotangoau]

I added a new device and selected the device (dehumidifier) most fit my device.
It works quite well but when I had the device in Local Tuya, there was a DP (107) containing the life of the air filter. It's not in Tuya Local.
Is it possible to add this DP to the existing configuration?

[daveshenal]

Yes, this should be possible! tuya local uses YAML files to map DPs to home assistant entities, so you can add DP 107 by editing the device config directly.. there's no UI for this.

Find the dehumidifier YAML file in config/custom_components/tuya_local/devices/, copy it with a new name, and add something like this:

- entity: sensor
  name: Filter Life
  category: diagnostic
  dps:
    - id: 107
      type: integer
      name: sensor
      unit: "%"
      class: measurement

Save it in the same folder and restart Home Assistant (no need to remove and re add the device)

One thing to be aware of: files in that directory get overwritten when the integration updates via HACS, so you'd need to reapply after updates. The long term fix would be submitting a PR to add it upstream.

[bravotangoau]

Yes, I found it after posing and successfully create a new file with the correct product ID and name etc. Do I need to re-apply after updates if I'm not updating the device?
How do I add the file upstream? I think it'll help other product users with the specific yaml file (I also renamed a confusing setting name). Can I just upload to the GitHub directory?
Thanks for your help!

[daveshenal]

If you're not updating the integration via HACS, your file stays untouched... the overwrite only happens when you update tuya local itself.

For contributing upstream- yes the process is a standard github PR. fork the repo, add your yaml file to custom_components/tuya_local/devices/, and open a pull request. The maintainer reviews and merges it. You can't upload directly to the github directory without a PR.

[bravotangoau]

I downloaded it via HACS so I'm afraid it'll get overwritten....then again, does HACS actually wipe the directory or simply replace existing files? I have the yaml in a totally new filename...Anyway, I'll do the right thing and do a PR. Thank you again!