Mockup
In many cases, you need to develop a mock-up of a web app interacting with your smart object. A convenient way is to use PROTOSHARE This tool allows you to design pretty complex UI and to link components (1. button
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Visualizing location data
We will use node-red-contrib-web-worldmap To access the service go to http://127.0.0.1:1880/worldmap/
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Persistence
There are a number of services providing persistence in a simple way, such as firebase or parse, just to mention few of them. Actually both of them are much more than persistence services!!! However, for the sake of simplicity, here we
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Get data from openweathermap.org
1. Go to http://openweathermap.org/price and click on "Get API KEY and Start" 2. Follow the procedure to register and copy the API Key 3. Install node-red-node-openweathermap 4. Use the new node as in the picture below
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Basic 2 ... how to check if two sensed values are greater than ...
// if the variable current_input1 exists it get the current values // otherwise it sets it to 0 var current_input1 = context.get("store_of_current_input1") || 0; // if the variable current_input2 exists it get the current values // otherwise it sets it
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Basic 1 ... how to check if a sensed value is greater than ...
This simple flow checks whether the Input1 value is greater then 10. If yes it prints out the value alto, otherwise the value basso. Notice that since msg.payload is a string it must be parsed into an Integer to check
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One further example
You have a virtual sensor at home providing data on temperature (T) at regular intervals (SENSE) Your local intelligence is the following (THINK) if T>TTh switch on the virtual air conditioning (ACT) Notice that the thresholds TTh are initially set
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