As mentioned in a previous post, I control my robotic lawnmower, a Husqvarna Automower, affectionately known as Oswald, via a controllable power outlet. The principle behind this is that the mower only starts when the charging station gets a current from the socket. My motivations for the power outlet were the lack of a rain sensor and the lack of available control options. For a few years I used a simple PHP page for control, see: www.script-example.com/smartplug-steuerung and later on I developed it with the PHP framework Laravel for the control. After transferring more and more automation tasks to Home Assistant in the meantime, the robotic mower was another logical step. Compared to the earlier solutions, the control with Home Assistant was much faster and easier to implement, especially since I don't have to worry about collecting the data, evaluating and displaying it. I was able to take over the logic for the control from the basic idea of the existing projects. I have limited the mowing phase directly in the settings of the device to the morning, so that Oswald disturbs as little as possible. Home Assistant is supposed to turn on the outlet only when it hasn't rained, the weather forecast is right, and the sun is shining, so that the device doesn't come into conflict with certain nocturnal or crepuscular animals. 

The automation in detail

Besides certain times, the power generation of my balcony power plant serves as a trigger. The mower starts in the morning when the sun is shining and is deactivated again in the evening when the mower is in the charging station. I can tell if the mower has found its way back to the charging station by the power consumption: Under 3 watts, the mower is fully charged and in the station. If the mower ever fails to find its way home, I get a notification on my cell phone. As a condition for the start, I have queried the weather in the automation: The past precipitation values and a weather forecast are used:

Trigger	Description
When BalkonKW Total AC Output Power (Active) is above 110.	Above 110 watts from the balcony power plant: the sun is shining: In the actions: Check if the mower should start and turn on the power outlet if necessary.
If the time is equal to 18:00	In the evening In the actions: Check if the mower is in the charging station and if necessary turn off the socket, or send a notification.

Actions

[+]

Execute 'Switch on?' if 'Morning' otherwise 'Evening: Turn off' If*: Morning (before 1PM) Then*: Turn on? If*: Confirm BalkonKW Total AC Output Power (Active) is above 110 (sun shining) Oswald Switch is off Confirm rain_zamg is below 1 (no rain) Weather Forecast (no rain in sight) Confirm OpenWeatherMap Forecast Precipitation is below 50 Confirm OpenWeatherMap Forecast Precipitation is below 2 Then*: OswaldSwitch on Calling a service 'notify.mobile_app_sm_??' on Otherwise: In the evening: Switch off If*: Oswald Switch is on Then*: Execute 'Turn off Oswald Switch' if 'Confirm Oswald Active power is below 3' Otherwise 'Invoke a service 'notify.mobile_app_sm_??' on ' If*: Confirm Oswald Active power is below 3 Then*: Switch off Oswald Switch Otherwise: Call a service 'notify.mobile_app_sm_??' on

Here is the finished process as YAML-Text

alias: Oswald
description: ""
trigger:
  - platform: numeric_state
    entity_id: sensor.balkonkw_total_ac_output_power_active
    above: 110
  - platform: time
    at: "18:00:00"
condition: []
action:
  - if:
      - condition: time
        before: "13:00:00"
        alias: Late morning
    then:
      - if:
          - condition: numeric_state
            entity_id: sensor.balkonkw_total_ac_output_power_active
            above: 110
          - condition: device
            type: is_off
            device_id: ???
            entity_id: switch.oswald_switch
            domain: switch
          - condition: numeric_state
            entity_id: sensor.rain_zamg
            below: 1
          - condition: and
            conditions:
              - condition: numeric_state
                entity_id: sensor.openweathermap_forecast_precipitation
                below: 50
              - condition: numeric_state
                entity_id: sensor.openweathermap_forecast_precipitation
                below: 2
            alias: weather forecast
        then:
          - type: turn_on
            device_id: ???
            entity_id: switch.oswald_switch
            domain: switch
          - service: notify.mobile_app_sm_??
            data:
              title: It's dry and PV supplies -> Oswald on
              message: "{{states('sensor.balkonkw_total_ac_output_power_active')}}Watt"
              alias: PV supplies? Turn on?
        alias: Turn on?
    else:
      - if:
          - condition: device
            type: is_on
            device_id: ???
            entity_id: switch.oswald_switch
            domain: switch
        then:
          - if:
              - condition: numeric_state
                entity_id: sensor.oswald_active_power
                below: 3
            then:
              - type: turn_off
                device_id: ???
                entity_id: switch.oswald_switch
                domain: switch
            else:
              - service: notify.mobile_app_sm_??
                data:
                  title: Oswald not turned off
                  message: "Power: {{states('sensor.oswald_active_power')}}Watt"
        alias: "In the evening: switch off"
mode: single

The Yaml-Text can be posted into an empty automation and adapted to your needs. The historical precipitation values, in the flow "sensor.rain_zamg" I get by curl from a publicly accessible website, similar to the readout of the PV values of my balcony power plant: PV Balcony Power Plant Commissioning and HA Integration. See also, HA: Use values of any WebGUI as entities