Please help with Integrating TDS Readings from Water Quality Monitor

[jahm2u]

Hey guys, I've integrated a water quality monitor with Home Assistant using Tuya Local. Everything's working except for the TDS (Total Dissolved Solids) readings. The TDS data is visible in the Tuya API and I see we also have some TDS alarms found in devices/phw218_waterquality_monitor.yaml in Tuya Local, but it's not showing up as an entity in Home Assistant.

This is the high warning that I can find in your config for devices from this monitor.

- entity: number
    name: High TDS warning
    category: config
    icon: "mdi:water-opacity"
    dps:
      - id: 112
        type: integer
        name: value
        unit: ppm
        range:
          min: 0
          max: 199999

However, I can also see that the TDS data is being returned by the API

            "1": {
                "code": "tds_in",
                "type": "Integer",
                "values": {
                    "unit": "ppm",
                    "min": 0,
                    "max": 9999,
                    "scale": 0,
                    "step": 1
                }
            },
            "2": {
                "code": "temp_current",
                "type": "Integer",
                "values": {
                    "unit": "\u00b0C",
                    "min": 0,
                    "max": 800,
                    "scale": 1,
                    "step": 1
                }
            },
            "7": {
                "code": "battery_percentage",
                "type": "Integer",
                "values": {
                    "unit": "%",
                    "min": 0,
                    "max": 100,
                    "scale": 0,
                    "step": 1
                }
            }
        },

Can someone point me in the right direction in terms of how to move forward to collect his data on tuya-local

[make-all]

This seems to be a different device than the PH218 config you are looking at. The PH218 has TDS on dp 111 and current temperature on dp 8. It does not seem to have a battery reading, but maybe that is just missing from the data provided in #580, as that report was an older report before the more complete QueryThingsDataModel API call was discovered.

[jahm2u]

Ahh you are correct, this is a different sensor all together.

[ { "name": "plant-sensor-water-quality", "id": "ebcfdd8da980a75584ahps", "key": "MY%ExAw{07cM^U3A", "mac": "50:8b:b9:8e:f9:cd", "uuid": "da0c350a5d590c6e", "sn": "10011192500084", "category": "szjcy", "product_name": "YINMIK Water Quality Tester", "product_id": "u5xgcpcngk3pfxb4", "biz_type": 0, "model": "WF-3188", "sub": false, "icon": "https://images.tuyaus.com/smart/icon/bay164497620449560Pe/3c680798e8af1b8ed29218a14427936d.jpg", "mapping": { "1": { "code": "tds_in", "type": "Integer", "values": { "unit": "ppm", "min": 0, "max": 9999, "scale": 0, "step": 1 } }, "2": { "code": "temp_current", "type": "Integer", "values": { "unit": "\u00b0C", "min": 0, "max": 800, "scale": 1, "step": 1 } }, "7": { "code": "battery_percentage", "type": "Integer", "values": { "unit": "%", "min": 0, "max": 100, "scale": 0, "step": 1 } } }, "ip": "10.212.1.25", "version": "3.3" } ]

Is the recommended action to duplicate this file and make a new one that maps correctly?

Edit: I found another thread here, I suppose it is a similar issue and maybe this data is just not available? rospogrigio/localtuya#1459

[make-all]

I think your device matches the device in #880 rather than the PH218. The user that submitted the config did list dp 1 as "tds_in" in the original request, but later listed it as "Calculated value from EC x EC Temp.Comp.Factor", so maybe it is calculated in the cloud and not available locally. In that case you could use a template sensor to do the calculation in HA if you want that value.

[jahm2u]

Thank you!

I was able to calculate it myself by multiplying by 1000 and dividing by 2. Thanks for pointing me in the right direction!