ESPHome Temp Entity transmits DegC, but displays DegF

Configuration
1

Anyone know what’s going on here, explain the issue, and suggest a solution? I re-flashed a Sonoff TH-16 with ESPHome and originally had a Lambda setup for the temperature entity to transmit just DegF. Down the road to present, I now need the original DegC & DegF transmitted. So I set up my YAML on the node to send both the original DegC and a templated DegF.

sensor:
  - platform: dht
    pin: GPIO14
    temperature:
      unit_of_measurement: "°C"
      name: "TH16 #1 Temperature °C"
      id: "temp"
    humidity:
      unit_of_measurement: "% HUM"
      name: "TH16 #1 Humidity"
    model: SI7021
    update_interval: 30s
    
  - platform: template
    name: "TH16 #1 Temperature"
    unit_of_measurement: "°F"
    lambda: return (id(temp).state * (9.0/5.0) + 32.0);

I can see that the node is sending the HA API the correct data:

[13:48:47][D][sensor:092]: 'TH16 #1 Temperature': Sending state 63.68000 °F with 1 decimals of accuracy
[13:48:50][D][dht:048]: Got Temperature=17.6°C Humidity=49.9%
[13:48:50][D][sensor:092]: 'TH16 #1 Temperature °C': Sending state 17.60000 °C with 1 decimals of accuracy
[13:48:50][D][sensor:092]: 'TH16 #1 Humidity': Sending state 49.90000 % HUM with 0 decimals of accuracy
[13:49:20][D][dht:048]: Got Temperature=17.6°C Humidity=50.0%
[13:49:20][D][sensor:092]: 'TH16 #1 Temperature °C': Sending state 17.60000 °C with 1 decimals of accuracy
[13:49:20][D][sensor:092]: 'TH16 #1 Humidity': Sending state 50.00000 % HUM with 0 decimals of accuracy
[13:49:47][D][sensor:092]: 'TH16 #1 Temperature': Sending state 63.68000 °F with 1 decimals of accuracy

But when I lookup the entity and display on Lovelace, the units of measurement and displayed data is all DegF.

DegC
DegC1007×845 33.5 KB

Screenshot 2021-02-08 135311
Screenshot 2021-02-08 1353112490×1695 161 KB

I’ve deleted the integration, reloaded, no change. I rebooted the host, server, etc, no change. Even looking in “core.registry_entity” I can see that each entity is formatted properly. I haven’t added a configuration.yaml entry for this entity either because I’d like the node to carry the calculation loads.

{
                "entity_id": "sensor.th16_1_temperature",
                "config_entry_id": "e0b165bb37ffe7518759daa2d076a654",
                "device_id": "3a9445a4f3f45bd7446d462d70d52d50",
                "area_id": null,
                "unique_id": "esp-th16-1sensorth16_1_temperature",
                "platform": "esphome",
                "name": null,
                "icon": null,
                "disabled_by": null,
                "capabilities": null,
                "supported_features": 0,
                "device_class": null,
                "unit_of_measurement": "\u00b0F",
                "original_name": "TH16 #1 Temperature",
                "original_icon": ""
            },
            {
                "entity_id": "sensor.th16_1_temperature_degc",
                "config_entry_id": "e0b165bb37ffe7518759daa2d076a654",
                "device_id": "3a9445a4f3f45bd7446d462d70d52d50",
                "area_id": null,
                "unique_id": "esp-th16-1sensorth16_1_temperature_c",
                "platform": "esphome",
                "name": null,
                "icon": null,
                "disabled_by": null,
                "capabilities": null,
                "supported_features": 0,
                "device_class": null,
                "unit_of_measurement": "\u00b0C",
                "original_name": "TH16 #1 Temperature \u00b0C",
                "original_icon": "mdi:thermometer"
            },

What have I missed?

2

Temperature units are determined by your setting in Home Assistant and automatically converted.

There are workarounds,

3

Ahh, so while I was attempting to have the node do the calculations, HA was just reverting them back to DegF due to the blanket “system setting.”

That’s a real bummer. Thanks for the info! I’ll just remove the “deg” and go with unit “C”.

1 Like