Node RED Smart Home Control
Nutzung des kostenlosen/spendenfinanzierten Service Node-RED Smart Home Control zur Anbindung an Alexa (und Google Assistant bzw. Google Home).
- Account Anlegen auf https://red.cb-net.co.uk/new-user und Email Verifizierung durchführen.
- In Alexa App den Skill
Node-RED Smart Home Controlvon cb-net hinzufügen und mit den in Schritt 1 verwendeten Zugangsdaten verbinden. - Über den Node-RED Palette Manager die Nodes
node-red-contrib-alexa-smart-homeinstallieren (siehe Zusätzliche Nodes installieren)
Jedes Gerät das man verwenden möchte muss unter https://red.cb-net.co.uk/devices angelegt werden. Danach muss man Alexa mit der Aufforderung "Suche Geräte" (oder über die App) diese neuen Geräte einbinden lassen.
Als Alexa Gerät wird ein "Contact Sensor" verwendet:
Ein CCU Value Node wird auf den Datenpunkt STATE des Kanals 1 des Fensterkontakts konfiguriert:
Dieser Node gibt je nach Zustand des Fensterkontakts bool true oder false als msg.payload aus. Der Alexa Service erwartet jedoch folgende msg: {"acknowledge": true, "payload": {"state": {"contact": "DETECTED"}}} bzw. {"acknowledge": true, "payload": {"state": {"contact": "NOT_DETECTED"}}}, es ist also eine Transformation der Nachricht notwendig damit diese vom Alexa Node genutzt werden kann. Dies kann mit einem Switch und 2 Change Nodes durchgeführt werden:
Am Ende des Flows kommt der Node alexa smart home v3 state zum Einsatz:
Import siehe https://github.com/rdmtc/RedMatic/wiki/Flow-Import
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