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@Cadair
Last active February 5, 2023 14:42
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esphome configuration for my Open Energy Monitor thermostat
# This is an esphome configuration file for the OpenEnergyMonitor Thermostat
# The primary objectives of this configuration file are:
# 1) The temperature used as the sensor for the thermostat should be read from
# homeassistant, this lets you use an average or change the room the
# temperature is based on depending on the time of day etc.
# 2) If homeassisant goes offline the thermostat keeps working.
# To this end there is a sensor "average_temperature" which is recieved from hass
# and a second sensor "combined_temperature" which decides based on if a device
# is connected to the native API or not to use this sensor or the local sensor
# attached to the thermostat.
# Finally, when the last device disconnects from the Native API the thermostat
# will be put into heat mode with a default setpoint, meaning that it will keep
# itself at a useful temperature even though it is disconnected from hass.
esphome:
name: thermostat
platform: ESP8266
board: esp_wroom_02
wifi:
networks:
- ssid: !secret wifi_ssid
password: !secret wifi_password
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Thermostat Fallback Hotspot"
password: ""
web_server:
port: 80
ota: false
captive_portal:
logger:
api:
ota:
status_led:
pin: GPIO16
switch:
- platform: gpio
pin: GPIO5
id: relay
name: "Thermostat Relay"
i2c:
sda: GPIO4
scl: GPIO5
scan: false
dallas:
- pin: GPIO2
binary_sensor:
# If you press the button on the thermostat set it to 23C
- platform: gpio
pin:
number: GPIO0
inverted: True
name: "Thermostat Button"
on_click:
- then:
- climate.control:
id: thermo
mode: HEAT
target_temperature: 23°C
# If the API connection to home assistant is interrupted then we revert to
# using the local temp sensor and we turn the heating on and default it to 20C
- platform: status
name: "Thermostat Status"
id: statussensor
on_release:
then:
- climate.control:
id: thermo
mode: HEAT
target_temperature: 20°C
sensor:
- platform: dallas
index: 0
id: thermostat_temperature
name: "Kitchen Temperature"
- platform: homeassistant
name: "Average Temperature"
entity_id: sensor.average_temperature
internal: true
id: average_temperature
unit_of_measurement: "°C"
- platform: template
name: Combined Temperature
id: combined_temperature
lambda: |-
if (id(statussensor).state) {
return id(average_temperature).state;
} else {
return id(thermostat_temperature).state;
}
update_interval: 10s
unit_of_measurement: "°C"
climate:
- platform: thermostat
id: thermo
name: "Central Heating"
sensor: combined_temperature
min_idle_time: 30s
min_heating_off_time: 60s
min_heating_run_time: 60s
default_target_temperature_low: 20 °C
away_config:
default_target_temperature_low: 14 °C
heat_action:
- switch.turn_on: relay
idle_action:
- switch.turn_off: relay
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