node-red-contrib-ha-state

observable things in node red

Install

via the manage palette menu

or manually:

cd <NODE_RED_PATH>
npm install node-red-contrib-ha-state

Functionality

1. Create a type of a device with a Thing Type Node, which has 2 settings:
   1. attributes: constants that are specific to a thing
   2. states: properties that can change over time
2. Store a device state in a Thing node
3. Fire an event when the value of a state changes using an Event node
4. Compare the values with custom rules in a Gate node
5. Output the value to another flow with a Value node
6. Change a state via an Action node

e.g. if you have smart thermostats:

1. create the Thermostat Thing type:
   1. add attribute id
   2. add temperature, target and battery as states
2. create a living room Thing of type Thermostat (this represents the actual device)
   1. set the id for the device
3. manipulate the living room thermostat via the action node, and listen to changes via the event node

Note: a Thing is just a virtual representation of the device, any connection to a real device must be done seperately