On recommendation from another coworker I added HomeAssistant to the mix of Pi's that automate my house. It's an awesome tool and as a security professional I highly recommend it over cloud based alternatives but that's another blog entry!
This is episode 5 of our multi-part series on how I built a fully automated temperature control system for my telescope mirror. In the previous installment - https://astromaphilli14.blogspot.com/2022/07/recording-temprature-data-to-influxdb.html - we saw that the data was being recorded in Influx and read into Grafana for 'pretty pictures and graphs'
Now we are going to create a second client to read the data out of Influx, HomeAssistant
The idea of using HomeAssistant (HASS) is that we can take logical action such as:
If deltaT > X ; TURN ON
Else if deltaT < Y ; SHUT OFF
Elsif ; SHUT OFF
Actual automation in HASS will be the next blog, but for now, let's show how to get our values into HASS!
pi@astrocart:~ $ cat /Docker/homeassistant/sensor.yaml
- platform: influxdb
host: localhost
username: maphilli14
password: MYSECRET
queries:
- name: DeltaTemp
measurement: '"°F"'
value_template: '{{ value | round(1) }}'
where: '"time" > now() - 1m'
measurement: 'DeltaTemp'
database: astrocarttemp
- name: AstroCartTemp
measurement: '"°F"'
value_template: '{{ value | round(1) }}'
where: '"time" > now() - 1m'
measurement: 'AirTemp'
database: astrocarttemp
- name: MirrorTemp
measurement: '"°F"'
value_template: '{{ value | round(1) }}'
where: '"time" > now() - 1m'
measurement: 'MirrorTemp'
database: astrocarttemp
- name: OpenWeather Temp
measurement: '"°F"'
value_template: '{{ value | round(1) }}'
where: '"time" > now() - 1m'
measurement: 'OpenWeatherTemp'
database: astrocarttemp
pi@astrocart:~ $
It's actually that simple!
This as well as some simple hacks to grafana make for some very pretty dashboards such as my current one!
Here's me scrolling around - https://imgur.com/vt8adSy
https://i.imgur.com/vt8adSy.mp4
