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* If you haven't installed Node.js yet download and install it here: https://nodejs.org/en/download/ |
* If you haven't installed Node.js yet download and install it here: https://nodejs.org/en/download/ |
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* Use the command line to verify that Nodejs has been installed correctly. |
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* Use the command line to verify that Node.js has been installed correctly. |
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** To open the command line enter "cmd" in the Windows search bar and press the enter key. |
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[[Datei:Command line.png|350px]] |
[[Datei:Command line.png|350px]] |
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[[Datei: |
[[Datei:commandline.png|400px]] |
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*After you have opened the command line |
*After you have opened the command line enter "node --version" |
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[[Datei: |
[[Datei:verify node version.png|400px]] |
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*Also |
*Also enter "npm --version" in the command line. |
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** Hint: npm usually comes with Node.js |
** Hint: npm usually comes with Node.js |
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[[Datei: |
[[Datei:verify npm version.png|400px]] |
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[[Bild: |
[[Bild:commandline.png|400px]] |
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[[Bild: |
[[Bild:install node-red.png|400px]] |
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*Enter "npm install node-red-node-test-helper node-red --save-dev" and press the enter key |
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[[Bild: Install node-red-node-test-helper command.png|400px]] |
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*Enter "node-red" and press the enter key to start Node-RED |
*Enter "node-red" and press the enter key to start Node-RED |
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** Essential step, because this creates the ''.node-red'' folder in your user directory which we need for further steps |
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[[Bild: |
[[Bild:start node-red.png|400px]] |
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[[Bild: Open Node-RED Editor.png|600px]] |
[[Bild: Open Node-RED Editor.png|600px]] |
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→ Close the browser and the command line |
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*Close the browser and the command line now |
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*Open a new command line |
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= Node-RED Tutorial - Part 1 = |
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[[Bild:commandline.png|400px]] |
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The following tutorial shows how to import nodes of Node-RED |
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into expecco and how to use them. |
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*Navigate to the ''.node-red'' folder created by the start of Node-RED |
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* Open a new testsuite in expecco |
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**Enter "cd .node-red" and press the enter key |
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[[ |
[[Bild: node-red folder.png|400px]] |
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*Enter "npm install node-red-node-test-helper node-red --save-dev" and press the enter key |
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* Now you should have the following view in front of you |
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** Make sure you are in the ''.node-red'' folder |
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[[Datei:Opened Testsuite.png|800px]] |
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* Click the undo-button to remove the existing demos |
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[[Datei:Click undo-button.png|500px]] |
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[[Datei:Blank Testsuite.png|500px]] |
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* Click on ''Extras'' → ''Settings'' |
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[[Datei:Navigate to Settings.png|800px]] |
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* Click on ''Execution'' → ''External Script Interpreters'' → ''Node'' |
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[[Datei:Node Settings.png|800px]] |
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* Specify at ''Node.js Path'' the path to the Node.js interpreter |
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[[Datei:NodeJS.png|800px]] |
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* Click on the question mark next to ''Node.js Path'' to verify the node path |
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** If the path is correct you will see the version of ''Node.js'' in the lower field |
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[[Datei:Verify path.png|800px]] |
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* Specify at ''Node-RED'' → ''Module Path'' the path to the ''node_modules'' folder |
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** Click on the three points next to the field |
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[[Datei:Specify Module.png|800px]] |
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* A small window opens |
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** Navigate to the user directory of the current user |
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** Navigate to the ''.node-red'' folder, then navigate to the ''node_modules'' folder |
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** Select this folder and click OK |
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** Your path in the field of ''Filename'' should look like ''C:\Users\YOUR_USERNAME\.node-red\node_modules'' |
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[[Datei:Browse to node_modules.png|800px]] |
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* Specify at ''Node-RED'' → ''Execution Directory'' the path to the ''.node-red'' folder |
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** Click on the three points next to the field |
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[[Datei:Execution Directory Path.png|800px]] |
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* A small window opens |
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** Navigate to the user directory of the current user |
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** Navigate to the ''.node-red'' folder |
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** Select this folder and click OK |
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** Your path in the field of ''Filename'' should look like ''C:\Users\YOUR_USERNAME\.node-red'' |
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[[Datei:Execution Directory.png|800px]] |
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*Click on ''Apply'' and then on ''Close'' |
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[[Datei:Confirming module and execution path.png|800px]] |
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*Click ''YES'' to save the entered paths |
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[[Datei:Save paths.png|800px]] |
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*Click on ''Operations'' → ''Node-RED'' → ''Importing Nodes'' |
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[[ |
[[Bild:install node-red helper.png|500px]] |
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→ Now you have installed everything you need to do the tutorials below |
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* A small window opens |
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** Navigate to the user directory of the current user |
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** Navigate to ''.node-red → node_modules → @node-red → nodes → core → network'' |
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** In this folder is a file called ''21-httprequest.html'' |
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** Select this file and click on OK |
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= Tutorials = |
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*[[Node-RED Tutorial - Part 1]] |
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*[[Node-RED Tutorial - Part 2]] |
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[[Datei:Select node to import.png|800px]] |
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Aktuelle Version vom 11. Februar 2020, 09:07 Uhr
Inhaltsverzeichnis
Introduction[Bearbeiten]
Node-RED is a graphical development tool. With Node-RED, use cases for the Internet of Things can be implemented according to a simple modular principle. In Node-RED there are so-called "nodes" which look like as follows. Each node fulfills a certain function e.g. making a HTTP-request.
Preparations[Bearbeiten]
- If you haven't installed Node.js yet download and install it here: https://nodejs.org/en/download/
- Use the command line to verify that Node.js has been installed correctly.
- To open the command line enter "cmd" in the Windows search bar and press the enter key.
- After you have opened the command line enter "node --version"
- Also enter "npm --version" in the command line.
- Hint: npm usually comes with Node.js
- Internet connection available?
Installing Node-RED[Bearbeiten]
- Open command line
- Enter "npm install -g --unsafe-perm node-red" and press the enter key
- Enter "node-red" and press the enter key to start Node-RED
- Essential step, because this creates the .node-red folder in your user directory which we need for further steps
- After you have started Node-RED open your browser (Chrome, Firefox, Internet Explorer, ...)
- Enter "localhost:1880" into the search bar of your browser and press the enter key
→ Close the browser and the command line
- Open a new command line
- Navigate to the .node-red folder created by the start of Node-RED
- Enter "cd .node-red" and press the enter key
- Enter "npm install node-red-node-test-helper node-red --save-dev" and press the enter key
- Make sure you are in the .node-red folder
→ Now you have installed everything you need to do the tutorials below
