Node red for sensemakers meetup
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The document discusses a presentation by Jonathan Carter at the IoT Meetup in September 2015, which focuses on Node-RED, an open-source project developed by IBM designed for IoT applications. It explains the structure of Node-RED flows, including input, process, and output nodes, as well as the JSON message format used for data passing. Additionally, it highlights practical applications such as integrating with Twitter, visualizing data online, and connecting various hardware platforms.
Node red for sensemakers meetup
- 1. For sensemakers IoT meetup on 16 Sep 2015 Presenter : Jonathan Carter @jonathanrcarter the gateway to an IoT economy Amsterdam iBeacon Living Lab Node Red demonstration
- 2. • Developed by IBM as an open source project • Based on NODEJS, designed for IoT • Visual interface similar to Yahoo Pipes (web port 1880) • Program is called a FLOW step is called a NODE • Deployable on multiple platforms e.g. local computer, linux server , rip, beagle bone • Includes a web server and a rest server out of the box the gateway to an IoT economy Amsterdam iBeacon Living Lab Node-Red - key facts
- 3. Node-Red - flows Input node • Starting point of a flow • Often takes its input from an external source • In this example a twitter feed looking for the search term “appcelerator”
- 4. Node-Red - flows Process node • Has an input and one (or many) outputs • Takes its input from a node and passes its output to a node (or nodes) • In this example it adds a sentiment score to a twitter message
- 5. Node-Red - flows Output node • Typically ends a flow • Takes its input from a node and passes its output to an external system or to “debug” • In this example it outputs the tweet to “debug”
- 6. Node-Red - flows • The format which is passed from node to node is called a Message • It is in JSON format and almost always contains a Payload and sometimes a Topic but is very flexible Message { topic : “”, payload : “” }
- 7. Node-Red - flows Message { "topic": "tweets/farahburn_", "payload": "RT @adnan04ar01: #SyrianRefugees brought his cat on the boat to #Greece. 😼 😿 😻 http://t.co/52rYsXWeg1", "lang": "en", "tweet": { "created_at": "Wed Sep 16 05:03:43 +0000 2015", “id": 644013774723113000, "text": "RT @adnan04ar01: #SyrianRefugees brought his cat on the boat to #Greece. 😼 😿 😻 http://t.co/52rYsXWeg1", "source": "<a href="http://twitter.com/download/android" rel="nofollow">Twitter for Android</a>", "user": { "id": 244947493, "name": "Farah dot dot", "screen_name": "farahburn_", "location": "", "followers_count": 1098, "friends_count": 843, "listed_count": 2 } } }
- 8. Node-Red - Visual interface Debug console Available nodes Deploy button
- 9. Node-Red - export and import Export and import via clipboard
- 10. Node-Red - Code Each node is an HTML file and a .JS file - you can make your own quite quickly flows are stored in a JSON file - you can easily github them
- 11. Node-Red - Extending control a Hue with a twitter hashtag
- 12. Node-Red - pratical session • Put it online in a nice graph at thingspeak • Get data from LoRa IoT beacon on the beacon mile
- 13. Node-Red - practical session • Put it online in a nice graph at thingspeak • Get data from LoRa IoT beacon on the beacon mile • Save it in a mysql database • make a nice rest interface • tweet if it goes above 20c
- 14. • becoming the deficit standard for IoT • very “lightweight” • can connect arduino, Rpi, linux, embedded chips all together and pass on messages to each other • Security, persistence built in Node-Red - practical session