Expose Nest Time to Target

silvrr · August 20, 2018, 6:56pm

The Nest Time to Target seems to be exposed via their API.

https://developers.nest.com/reference/api-thermostat#time_to_target

Can this be exposed as a Home Assistant Sensor? As I manually manage my thermostat it would be helpful to use this feature to calculate when to start my HVAC system.

awarecan · August 21, 2018, 11:57pm

Yes, this data exist in upstream lib. You can simply add a sensor.
See: https://github.com/jkoelker/python-nest/blob/4222c4e425c824f35c6d02ecd4b15f1c40683af7/nest/nest.py#L668

silvrr · August 21, 2018, 11:58pm

Any hints on how to do that? I have basically 0 python experience.

awarecan · August 22, 2018, 12:02am

github.com

home-assistant/core/blob/b9733d0d9999b1012e87b82e7a507f65abc6cc4a/homeassistant/components/sensor/nest.py#L17


import logging

from homeassistant.components.nest import (
    DATA_NEST, DATA_NEST_CONFIG, CONF_SENSORS, NestSensorDevice)
from homeassistant.const import (
    TEMP_CELSIUS, TEMP_FAHRENHEIT, CONF_MONITORED_CONDITIONS,
    DEVICE_CLASS_TEMPERATURE, DEVICE_CLASS_HUMIDITY)

DEPENDENCIES = ['nest']

SENSOR_TYPES = ['humidity', 'operation_mode', 'hvac_state']

TEMP_SENSOR_TYPES = ['temperature', 'target']

PROTECT_SENSOR_TYPES = ['co_status',
                        'smoke_status',
                        'battery_health',
                        # color_status: "gray", "green", "yellow", "red"
                        'color_status']

STRUCTURE_SENSOR_TYPES = ['eta']

Add time_to_target to SENSOR_TYPES list

silvrr · August 22, 2018, 1:36am

Thanks @awarecan, I had thought about taking that approach but figured it was surley more difficult than that.

Now to see how it reports. Should be able to get some data tomorrow after I go to work and the house heats up.

avonpohle · September 14, 2018, 3:42pm

Did this work for you? I would love to see this added to the Nest component!

silvrr · September 15, 2018, 1:00am

I had it for a day or so. Never got any data from it