esphome-wood-boiler.yaml

esphome:
  name: wood-boiler
  platform: ESP8266
  board: d1_mini  

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  fast_connect: true

# Enable Home Assistant API
api:

# Enable MQTT support
#mqtt:
#  broker: !secret mqtt_addr
#  username: !secret mqtt_user
#  password: !secret mqtt_password

# Enable logging
logger:

# Enable OTA updates
ota:

# Enable SPI for sensors
spi:
  miso_pin: D6
  clk_pin: D5

sensor:
  - platform: max31855
    name: "Wood Boiler Temperature"
    cs_pin: D8
    update_interval: 30s

    # Optional variables:
    unit_of_measurement: "°C"
    icon: "mdi:water-boiler"
    device_class: "temperature"
    state_class: "measurement"
    accuracy_decimals: 1

    # The sensor is noisy so filter outliers from the received sensor data
    filters:
      - median:
          window_size: 11
          send_every: 6
          send_first_at: 5