Example platypush configuration to take snapshots from a thermal camera and use an existing machine learning model to predict the presence of people and run custom actions

cron_example_1.yaml

cron.ThermalCameraSnapshotCron:
    cron_expression: '* * * * *'
    actions:
       # Retrieve the existing ROOM_PRESENCE variable
       # from the internal db if it exists
       -
            action: variable.get
            args:
                name: ROOM_PRESENCE

       # Copy it to another variable in memory
       -
            action: variable.mset
            args:
                PREV_ROOM_PRESENCE: ${ROOM_PRESENCE}

       # Capture an image to a tmp file
       -
            action: camera.ir.mlx90640.capture
            args:
                output_file: "/tmp/ir.jpg"
                grayscale: true

        # Use the ml.cv module to do predictions using
        # the model you have previously trained
        -
            action: ml.cv.predict
            args:
                model_file: ~/models/ir.pb
                img: /tmp/ir.jpg
                classes:
                    - negative
                    - positive

        # Store the output of the previous command on db
        -
            action: variable.set
            args:
                ROOM_PRESENCE: ${output}

        - if ${ROOM_PRESENCE == 'negative' and PREV_ROOM_PRESENCE != 'negative'}:
            - action: procedure.no_people_detected

        - if ${ROOM_PRESENCE_LABEL == 'positive' and PREV_ROOM_PRESENCE != 'positive'}:
            - action: procedure.people_detected