Hello everyone.
Lately I have managed to connect an esp to an OT shield from https://diyless.com/ / http://ihormelnyk.com/opentherm_adapter .
Because of this, I decided to concentrate some of my time to trying to make a smarter than your average hvac system. After finishing, this will be moved probably to projects section.
My heating project looks like this at the moment:
I can control my boiler now based on the temperature from a sensor in my house. Any of them, but only one at a time.
What I want to do is, a lot more complicated. I want to have control over the temperature in any of my 3 rooms, turn off heating of in a certain room if the window is opened, and maybe have a vacation button to set temp to a very low value.
Now, I am writing here because, of course, I am missing all the config needed for the automation. 
What needs to be done:
automation temp room1
- alias: room1-temp
trigger:
- platform: state
entity_id: sensor.0x00158d000465809a_temperature
action:
service: mqtt.publish
data:
payload: "{{ states('sensor.0x00158d000465809a_temperature') }}"
topic: "dummy-current-temp-room-1"
qos: 0
retain: 0
0x00158d000465809a : entity id of zigbee aqara temperature sensor
automation window room1
- alias: window-sensor-room1
trigger:
- platform: state
entity_id: binary_sensor.entity-of-window-sensor
- platform: state
entity_id: sensor.dummy-t1-r1
action:
- delay: '00:00:02'
- choose:
- conditions:
- condition: state
entity_id: binary_sensor.entity-of-window-sensor
state: 'on'
for:
minutes: 2
sequence:
- service: mqtt.publish
data:
payload: "10"
topic: "dummy-eco-set-temp-room1"
qos: 0
retain: 0
default:
- service: mqtt.publish
data:
payload: "{{ states('sensor.dummy-t1-r1') }}"
topic: "dummy-eco-set-temp-room1"
qos: 0
retain: 0
This should publish a value of 10 (as in degrees) to dummy-eco-set-temp-room1 if the window is open for more than 2 minutes, or the value on sensor dummy-t1-r1 if the window is closed. The automation should get triggered whenever the window is opened, closed, or the set value from thermostat gets changed.
This topic will get registered back as a new sensor:
sensor:
- platform: mqtt
name: "dummy-t2-r1"
state_topic: "dummy-eco-set-temp-room1"
automation TRV room1
- alias: TRV-command-room1
trigger:
- platform: state
entity_id: binary_sensor.entity-of-window-sensor
to: 'on'
- platform: state
entity_id: binary_sensor.entity-of-window-sensor
to: 'off'
- platform: state
entity_id: sensor.dummy-t2-r1
- platform: state
entity_id: sensor.0x00158d000465809a_temperature
action:
- choose:
- condition: or
conditions:
- condition: state
entity_id: binary_sensor.entity-of-window-sensor
state: 'on'
for:
minutes: 2
- condition: template
- value_template: "{{ states('sensor.0x00158d000465809a_temperature')|float > states('sensor.dummy-t2-r1')|float + 0.5}}"
sequence:
- service: mqtt.publish
data:
payload: {"window_detection": "ON"}
topic: "zigbee2mqtt/FRIENDLY_NAME/set"
qos: 0
retain: 0
default:
- service: mqtt.publish
data:
payload: {"window_detection": "OFF"}
topic: "zigbee2mqtt/FRIENDLY_NAME/set"
qos: 0
retain: 0
This automation should run either when the window is open for 2 minutes, window closes, there is a change in set temp or a change in room temperature. It closes the radiator in case room temperature is +0,5 degrees or higher than set temp or if window is open for more than 2 minutes, otherwise it opens the radiator.
automation mode
- alias: boiler-mode
trigger:
- platform: mqtt
topic: "dummy-mode-room1"
- platform: mqtt
topic: "dummy-mode-room2"
# ...
action:
- delay: '00:00:02'
- choose:
- condition: or
conditions:
- condition: state
state: 'on'
entity_id: binary_sensor.dummy-mode-room1
- condition: state
state: 'on'
entity_id: binary_sensor.dummy-mode-room2
# ...
sequence:
- service: mqtt.publish
data:
payload: heat
topic: "opentherm-thermostat/mode/set"
qos: 0
retain: 0
default:
- service: mqtt.publish
data:
payload: off
topic: "opentherm-thermostat/mode/set"
qos: 0
retain: 0
This should send heat payload to the topic opentherm-thermostat/mode/set if any of the rooms has the thermostat set to heating, otherwise send off to the same topic.
automation algorithm room1
- alias: alg room1
trigger:
- platform: state
entity_id: sensor.0x00158d000465809a_temperature
- platform: state
entity_id: sensor.dummy-eco-set-temp-room1
action:
- choose:
- conditions:
- condition: template
value_template: "{{ (states('sensor.dummy-eco-set-temp-room1')|float > states('sensor.0x00158d000465809a_temperature')|float) }}"
sequence:
- service: mqtt.publish
payload: "{{ states('sensor.0x00158d000465809a_temperature') }}"
topic: "dummy-current2-room-1"
- service: mqtt.publish
payload: "{{ states('sensor.dummy-eco-set-temp-room1') }}"
topic: "dummy-eco-final-room-1"
default:
- service: mqtt.publish
payload: "50"
topic: "dummy-current2-room-1"
- service: mqtt.publish
payload: "10"
topic: "dummy-eco-final-room-1"
automation algorithm room2
- alias: alg room2
trigger:
- platform: state
entity_id: sensor.entity_of_temp_sensor_room2
- platform: state
entity_id: sensor.dummy-eco-set-temp-room2
action:
- choose:
- conditions:
- condition: template
value_template: "{{ (states('sensor.dummy-eco-set-temp-room2')|float > states('sensor.entity_of_temp_sensor_room2')|float) }}"
sequence:
- service: mqtt.publish
payload: "{{ states('sensor.entity_of_temp_sensor_room2') }}"
topic: "dummy-current2-room-2"
- service: mqtt.publish
payload: "{{ states('sensor.dummy-eco-set-temp-room2') }}"
topic: "dummy-eco-final-room-2"
default:
- service: mqtt.publish
payload: "50"
topic: "dummy-current2-room-2"
- service: mqtt.publish
payload: "10"
topic: "dummy-eco-final-room-2"
These topics get translated to sensors:
sensor:
- platform: mqtt
name: "dummy-current-r1"
state_topic: "dummy-current2-room-1"
sensor:
- platform: mqtt
name: "dummy-t3-r1"
state_topic: "dummy-eco-final-room-1"
sensor:
- platform: mqtt
name: "dummy-current-r2"
state_topic: "dummy-current2-room-2"
sensor:
- platform: mqtt
name: "dummy-t3-r2"
state_topic: "dummy-eco-final-room-2"
# ...
automation send data to OT
- alias: temp to ot
trigger:
- platform: time_pattern
seconds: "/20"
action:
- service: mqtt.publish
data:
topic: "opentherm-thermostat/current-temperature/set"
payload: template
value_template: "{{ (states('"dummy-current2-room-1"')|float, states('dummy-current2-room-2')|float, states(...)|float)|min }}"
- service: mqtt.publish
data:
topic: "opentherm-thermostat/setpoint-temperature/set"
payload: template
value_template: "{{ (states('"dummy-eco-final-room-1"')|float, states('dummy-eco-final-room-2')|float, states(...)|float)|max }}"
mqtt climate config in configuration.yaml:
- platform: mqtt
modes:
- "off"
- "heat"
name: Boiler
current_temperature_topic: "dummy-current-temp-room-1"
mode_command_topic: "dummy-mode-room1"
mode_state_topic: "loop-mode-room1"
temperature_command_topic: "dummy-set-temp-room1"
temperature_state_topic: "loop-setpoint-room1"
min_temp: 12
max_temp: 28
value_template: "{{ value }}"
temp_step: 0.2
Mode_command_topic will transform into a binary sensor:
sensor:
- platform: mqtt
state_topic: "dummy-mode-room1"
name: "dummy-mode-room1"
payload_on: "heat"
payload_off: "off"
Temperature_command_topic goes into sensor:
sensor:
- platform: mqtt
name: "dummy-t1-r1"
state_topic: "dummy-set-temp-room1"