LocalTuya: Stadler Form Eva Humidifier

Haningback · April 22, 2022, 11:48am

Hello!

I wanted to share how I integrated a Stadler Form Eva humidifier in Homeassistant since I’ve struggled with it for a few weeks now and couldnt find anyone with a similar problem…

Stadler Form Eva is a humidifier controlled thorugh the “Smart Life” app, and Smart Life is owned/controlled by Tuya, so we start there.

Follow the tutorial on how set up a Tuya project/link device by app.
Download and install localtuya (When i used the “official” integration i only got a non-responsive device… which is why I had problems with integrating the humidifier)
Get/Copy your “Device ID” from IoT Tuya → Development → your project → Devices
Enter your device ID under API Explorer → Smart Home Management System → Device Management → Get Device details → Paste it here and hit “Submit Request” and your local_key should appear in the response

Next is the annoying thing, figuring out what to choose from the dropdown-menus for the different functions.

E.g: My humidifier has three switches:

Auto
Warm mode
Child Lock

So I had to select “Switch” and figure out what ID which is the corresponding entity, and create a new “entity” for each function i want.

I managed to map the values (they change based on, well, the current state of the entity/switch) so i ended up with this:

13: Target Humidity / Hygrostat
14: Current Humidity
23: Current output speed
26: Toggle Warm Mode
29: Toggle Child lock
102: Toggle Auto
103: 0x00 = Normal, 0x01 = Dimmer, 0x02 = Light Off

This is what I ended up with:

And this is how it looks like:

I got it fully functioning, but as many different devices, If anyone know how to configure it correctly I would be very happy to know how!

The main humidifier (Fan entity) only has 5 presets, speeds 1 - 5, I cannot manage to get Auto/Target humidity as a part of that entity… Which is why I had to make a separate controllable entity, number.target_humidity

nobale77 · May 3, 2022, 9:20am

Thanks for the great tips.
It works excellently for my EVA Humified.
The only challenge I have is that the process let me create only one switch (on - off) but I don’t know how to create more switches and all the sensors to read-set current values and target values.
Can you please help me please?
Thanks a lot in advance,
Alessandro

Haningback · May 3, 2022, 9:57am

When I followed the official tutorial I also only got a on-off switch (Tuya - Home Assistant) , that is why i added it through localtuya.

When you set up your device in localtuya you can only use each “ID” value once, so for my actual fan it looks like this:
localtuya → fan (Platform) → “1” as ID and “23” as Fan Speed Control dps

nobale77 · May 3, 2022, 1:30pm

Excellent, super clear! Thanks a lot again, it works super smoothly. Just a quick one, does the integration works even if internet is down? Does it need to look/check the key in the Tuya Smart development Center online for every request?

Haningback · May 3, 2022, 7:27pm

According to the official github repo it should work locally, so yes, it should work without internet!

and i doubt it checks the key for every request…

art-fanatic · November 29, 2022, 10:04pm

Hey! I have a Tuya Dehumidifier too and have followed the same process to integrate to HA. However, each entity is a separate item, switch, sensor etc. Is there a way to consolidate all the Tuya entities into a standard ‘humidifier’ entity?

Haningback · December 1, 2022, 10:19am

Yeah, the issue with separate entities annoys me as well, but I do not think its possible (as of now) to get the under the same “device”… I think that is a localtuya-problem

art-fanatic · December 2, 2022, 6:27am

I see, LocalTuya cannot create a humidifier entity yet. I wonder if there is a way to create a template humidifier entity that integrates with the various LocalTuya entities directly?

mb01 · January 7, 2023, 5:25am

Thanks for the instructions. I have a Stadler Form Karl humidifier, this are the mapped values I used:

	ID	platform	Values
Humidity	14	Sensor
Power	1	Switch
Hygrostat	103	select	40;45;50;55;CO
Fan speed	101	Select	level_1;level_2;level_3;level_4
Auto mode	102	Switch
Child lock	29	Switch
Lights - Normal, Dimmer, Lights off	34	Select	Fully;Half;Close
Filter life	33	Sensor
Low water	22	binary sensor	0;1;

TonioTonBa · January 23, 2023, 5:09pm

Works perfect!
There is still option 104, no clue to what it is. Auto start is not responding to it…

HolgerHees · February 10, 2023, 8:56am

104 is a read only binary sensor which indicates to change the filter

HolgerHees · February 12, 2023, 8:04pm

Hi, does the datapoint 22 works for you too?

I have a stadler karl big and everything works as expecteded. Except the low water datapoint. It is always 0.

jkenneth · March 28, 2023, 4:20pm

Same here. Did you get it working?

HolgerHees · March 28, 2023, 4:28pm

no, I observed another behavior. If I block Internet for my humidifier, it is stopping providing data after some time. Sending commands are still accepted and working.

jkenneth · March 28, 2023, 4:46pm

Got it working.
I have added the wrong values, true/false, when they should be 0/1.

Sjors · April 6, 2023, 12:17pm

I also had to replace false / true with 1 and 0 to get the low water level detection to work.

Is it possible to make Home Assistant treat the (Karl) device as a Humidifier entity? Also the latest release has a really nice fan control UI, how would I go about using that?

Here’s the relevant bit from my dashboard card (including a low water “alert”, though that’s not pretty):

- type: entities
  entities:
    - entity: sensor.humidity
    - entity: select.fan_speed
      secondary_info: last-updated
      icon: mdi:fan
    - type: conditional
      conditions:
        - entity: binary_sensor.low_water
          state: 'on'
      row:
        entity: binary_sensor.low_water
        type: attribute
        attribute: binary_sensor.low_water
        icon: hass:water-off
  title: Stadler Form Karl
  show_header_toggle: true
  state_color: false

xme53 · November 16, 2023, 4:16pm

Interesting thread. I am Looking to buy a few stadler Oskars and wondering if they would work via the tuya integration … does anybody have tried this?

machadolucas · February 14, 2024, 12:31pm

I found that we are able to get the list of codes and what is their meaning through the API.
With the IoT Core API > Device control > Query properties
For my Stadler Form Eva, it gave the following results:

{
  "result": {
    "properties": [
      {
        "code": "switch",
        "custom_name": "",
        "dp_id": 1,
        "time": 1707907505826,
        "value": true
      },
      {
        "code": "humidity_set",
        "custom_name": "",
        "dp_id": 13,
        "time": 1707911743578,
        "value": 50
      },
      {
        "code": "humidity_current",
        "custom_name": "",
        "dp_id": 14,
        "time": 1707907505826,
        "value": 25
      },
      {
        "code": "fault",
        "custom_name": "",
        "dp_id": 22,
        "time": 1707907505826,
        "value": 0
      },
      {
        "code": "level",
        "custom_name": "",
        "dp_id": 23,
        "time": 1707911721166,
        "value": "5"
      },
      {
        "code": "heat",
        "custom_name": "",
        "dp_id": 26,
        "time": 1707911728526,
        "value": true
      },
      {
        "code": "child_lock",
        "custom_name": "",
        "dp_id": 29,
        "time": 1707907505826,
        "value": false
      },
      {
        "code": "Auto",
        "custom_name": "",
        "dp_id": 102,
        "time": 1707911732046,
        "value": true
      },
      {
        "code": "BRIGHT",
        "custom_name": "",
        "dp_id": 103,
        "time": 1707911715565,
        "value": "0x01"
      }
    ]
  },
  "success": true,
  "t": 1707912976736,
  "tid": "da509c68cb3211ee9fb272b4dd63a2de"
}