For sensemakers IoT meetup on 16

Sep 2015

Presenter : Jonathan Carter

@jonathanrcarter

the gateway to an IoT economyAmsterdam iBeacon Living Lab

Node Red demonstration

• 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 economyAmsterdam iBeacon Living Lab

Node-Red - key facts

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”

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

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”

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 : “”

}

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

} }

}

Node-Red - Visual interface

Debug console

Available nodes

Deploy button

Node-Red - export and import

Export and import via clipboard

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

Node-Red - Extending

control a Hue with a twitter hashtag

Node-Red - pratical session

• Put it online in a nice graph at thingspeak

• Get data from LoRa IoT beacon on the beacon mile

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

• 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