watertank.yaml

substitutions:
  friendly_short: "Water Tank"

esphome:
  name: watertank
  platform: ESP8266
  board: d1_mini
  includes:
    - us100.h

wifi:
  networks:
    ssid: !secret wifissid
    password: !secret wifipassword
    hidden: true

# Enable logging
logger:
  #  level: INFO

# Enable Home Assistant API
api:

ota:
  password: !secret otapassword

uart:
  id: uart_bus
  tx_pin: D1
  rx_pin: D2
  baud_rate: 9600

sensor:
  - platform: custom
    lambda: |-
      auto us100 = new US100(id(uart_bus));
      App.register_component(us100);
      return {
        us100->distsensor,
        us100->tempsensor,
      };
    sensors:
      #- name: "${friendly_short} Distance"
      - id: us100_distance
        unit_of_measurement: mm
        icon: "mdi:tape-measure"
      - name: "${friendly_short} Temperature"
        unit_of_measurement: °C
  - platform: template
    #name: "${friendly_short} Water Level"
    id: waterlevel
    icon: "mdi:arrow-expand-vertical"
    update_interval: 10s
    unit_of_measurement: "mm"
    lambda:
      return 600 - id(us100_distance).state;
  - platform: template
    name: "${friendly_short} Percentage"
    icon: "mdi:water"
    update_interval: 10s
    unit_of_measurement: "%"
    lambda:
      return id(waterlevel).state;
    filters:
      - calibrate_linear:
        - 0 -> 0
        - 500 -> 100
  - platform: template
    name: "${friendly_short} Litres"
    icon: "mdi:water"
    update_interval: 10s
    unit_of_measurement: "L"
    lambda:
      return id(waterlevel).state;
    filters:
      - calibrate_linear:
        - 0 -> 0
        - 500 -> 200