Presented before a practical "live coding" session at the Amsterdam Internet Of Things meetup on Sep 16th 2015 by J carter

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