Example for Tibber / Dishwasher / node red

[cvg-de]

Hi all,
I implemented a workflow to start my dishwasher in the night, to take advantage of the dynamic electricity pricing from tibber. If anyone is interested, here is my workflow and a little description about the hurdles on the way:

First:
Get the tibber prices. I use node-red-contrib-tibber-api for this, the process to get the API key is pretty well documented over there.

• I inject this once a day at 18:00.

Second:
Find the optimal time to start the dishwasher. I use node-red-contrib-power-saver, which plugs in nicely with node-red-contrib-tibber-api.

• Since my dishwasher uses most of the electricity in the first two hours, I set the time window to "2 hours between 18:00 and 5:00". With this, the latest start is 3am, program runtime is 4 hours, so the program will be finished by 7am latest.

Third:
Start the dishwasher. I use node-red-contrib-homeconnect for this, and this was the most difficult to set up.

1. It is not well documented how to set the scope - you need to include "IdentifyAppliance" and "Dishwasher", and put those two words in the scope field, separated by a blank. Do this before you start the authorization, to get the complete set of rights for your access token.
2. The callback URL can be a local URL, no need to open ports to the internet. At the end of the the authorization process, the server sends a redirect to this URL to your browser to transmit the token to your local node red server.
3. How to get the HAID. I used the "home - connect - request" node once, triggered by a simple button in the UI, action "get settings", and linked the output to a debug node. Since the HAID doesn't change, this can be deleted afterwards.
4. How do I know if I can start the dishwasher? If I want to run it at night, I load all the dishes, add the cleaning tab, and enable "remote start". In the workflow, I check for this setting ("Test Fernstart").
5. You have to turn the dishwasher on first ("Einschalten"). After that, I wait 5 seconds before I send the start command.

You could also enable permanent remote start, then you would have to control the start from the node red UI.

Below is the complete workflow, i redacted the HAID, AUTH and apiEndpointRef fields. Feel free to ask if you have any questions, or suggestions to improve this rather simple v1 :-)

[
    {
        "id": "1a9c4bea7a51964f",
        "type": "home-connect-request",
        "z": "39edd760.2179b8",
        "auth": "fyyyyyyyyyyyyyyy",
        "name": "Start GS",
        "tag": "programs",
        "operationId": "start_program",
        "haid": "0xxxxxxxxxxxxxxxxx",
        "body": "{\n    \"data\": {\n        \"key\": \"Dishcare.Dishwasher.Program.Eco50\",\n        \"options\": [\n            {\n                \"key\": \"BSH.Common.Option.StartInRelative\",\n                \"value\":0,\n                \"unit\": \"seconds\"\n            }\n        ]\n    }\n}",
        "optionkey": "",
        "programkey": "",
        "settingkey": "",
        "commandkey": "",
        "statuskey": "",
        "imagekey": "",
        "x": 1500,
        "y": 580,
        "wires": [
            []
        ]
    },
    {
        "id": "02d07a891a05bc54",
        "type": "delay",
        "z": "39edd760.2179b8",
        "name": "",
        "pauseType": "delay",
        "timeout": "5",
        "timeoutUnits": "seconds",
        "rate": "1",
        "nbRateUnits": "1",
        "rateUnits": "second",
        "randomFirst": "1",
        "randomLast": "5",
        "randomUnits": "seconds",
        "drop": false,
        "allowrate": false,
        "outputs": 1,
        "x": 1320,
        "y": 580,
        "wires": [
            [
                "1a9c4bea7a51964f"
            ]
        ]
    },
    {
        "id": "f526d5935d6c9106",
        "type": "home-connect-request",
        "z": "39edd760.2179b8",
        "auth": "fyyyyyyyyyyyyyyy",
        "name": "Einschalten",
        "tag": "settings",
        "operationId": "set_setting",
        "haid": "0xxxxxxxxxxxxxxxxx",
        "body": "{\n  \"data\": {\n    \"key\": \"BSH.Common.Setting.PowerState\",\n    \"value\": \"BSH.Common.EnumType.PowerState.On\"\n  }\n}",
        "optionkey": "",
        "programkey": "",
        "settingkey": "BSH.Common.Setting.PowerState",
        "commandkey": "",
        "statuskey": "",
        "imagekey": "",
        "x": 1150,
        "y": 580,
        "wires": [
            [
                "02d07a891a05bc54"
            ]
        ]
    },
    {
        "id": "12338d79bcf92d3f",
        "type": "switch",
        "z": "39edd760.2179b8",
        "name": "Test Fernstart",
        "property": "payload.data.status.0.value",
        "propertyType": "msg",
        "rules": [
            {
                "t": "true"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 1,
        "x": 960,
        "y": 580,
        "wires": [
            [
                "f526d5935d6c9106"
            ]
        ]
    },
    {
        "id": "a9a82b57884923c6",
        "type": "home-connect-request",
        "z": "39edd760.2179b8",
        "auth": "fyyyyyyyyyyyyyyy",
        "name": "",
        "tag": "status",
        "operationId": "get_status",
        "haid": "0xxxxxxxxxxxxxxxxx",
        "body": "",
        "optionkey": "",
        "programkey": "",
        "settingkey": "",
        "commandkey": "",
        "statuskey": "",
        "imagekey": "",
        "x": 790,
        "y": 580,
        "wires": [
            [
                "12338d79bcf92d3f"
            ]
        ]
    },
    {
        "id": "6413a0812fec3cd7",
        "type": "ps-strategy-lowest-price",
        "z": "39edd760.2179b8",
        "name": "Lowest Price",
        "fromTime": "18",
        "toTime": "05",
        "hoursOn": "2",
        "maxPrice": "",
        "doNotSplit": true,
        "sendCurrentValueWhenRescheduling": true,
        "outputValueForOn": "true",
        "outputValueForOff": "false",
        "outputValueForOntype": "bool",
        "outputValueForOfftype": "bool",
        "outputIfNoSchedule": "false",
        "outputOutsidePeriod": "false",
        "contextStorage": "memory",
        "x": 590,
        "y": 580,
        "wires": [
            [
                "a9a82b57884923c6"
            ],
            [],
            []
        ]
    },
    {
        "id": "d751873cc7a156ea",
        "type": "ps-receive-price",
        "z": "39edd760.2179b8",
        "name": "Price Receiver",
        "x": 420,
        "y": 580,
        "wires": [
            [
                "6413a0812fec3cd7"
            ]
        ]
    },
    {
        "id": "fcaa54106a03272e",
        "type": "tibber-query",
        "z": "39edd760.2179b8",
        "name": "",
        "active": true,
        "apiEndpointRef": "bxxxxxxxxxxxxxxx",
        "x": 250,
        "y": 580,
        "wires": [
            [
                "d751873cc7a156ea"
            ]
        ]
    },
    {
        "id": "9b1532ebb3200bdc",
        "type": "inject",
        "z": "39edd760.2179b8",
        "name": "",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "",
        "crontab": "00 17 * * *",
        "once": true,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "{   viewer {     homes {       currentSubscription {         priceInfo {           today {             total             startsAt           }           tomorrow {             total             startsAt           }         }       }     }   } }",
        "payloadType": "str",
        "x": 90,
        "y": 580,
        "wires": [
            [
                "fcaa54106a03272e"
            ]
        ]
    },
    {
        "id": "f7114f0600ab80be",
        "type": "home-connect-auth",
        "name": "smarthome-v1",
        "simulation_mode": false,
        "scope": "IdentifyAppliance Dishwasher",
        "callback_url": "http://smarthome.fritz.box:1880/homeconnect/auth/callback"
    },
    {
        "id": "bb62aea70c43b40c",
        "type": "tibber-api-endpoint",
        "queryUrl": "https://api.tibber.com/v1-beta/gql",
        "feedConnectionTimeout": "30",
        "feedTimeout": "60",
        "queryRequestTimeout": "30",
        "name": ""
    }
]