rat pack remote control – an internet of things basics hands on workshop by sven kräuter

Rat Pack Remote Controla technical Internet of Things (tm) basics primer

Sven Kräuter - @SVEN_KR Codemotion Berlin | 05/2013

please tweet using:

@making_de#makingde

making things happen.

who is sven kräuter?

sven Kräuter is an agile & lean coach, software developer and a maker.

what is THE INTERNET OF THINGS?

THE INTERNET OF THINGS IS...

making things happen.

the internet of things (Iot)

objects

communicating

via the internet

build the iot.

making things happen.

the Iot

good bye

„one size fits all“.

making things happen.

the Iot

hello

„dedicated devices“.

video Source:https://vimeo.com/21387481

SPOTIFY BOX.making things happen.

video Source: sven‘s smartphone

M&C BULLI.

making things happen.

making things happen.

Category A Iot

interaction with existing

online services.

making things happen.

Category A Iot

representation of

known information

in a new way.

video Source: http://vimeo.com/45980092

GOOD NIGHT LAMP.making things happen.

making things happen.

Category B Iot

establishing new

online services.

making things happen.

Category B Iot

representation of

new information

in a new way.

nice but what‘s the purpose?

let me elaborate...

making things happen.

trend Always On

increasing amount of

real time data &

screens do not scale.

making things happen.

screens do not scale

representation of data

on a screen

is just one possibility.

making things happen.

screens do not scale

it is not necessarily

the best possibility.

video Source: https://vimeo.com/49425556

NO PLACE LIKE HOME.making things happen.

what THE INTERNET OF THINGS is

THE INTERNET OF THINGS IS enabling you to communicate beyond the boundaries of screens and keyboards.

what THE INTERNET OF THINGS is

it IS enabling you to communicate online in a more intuitive & more effective way.

Nice. But HOW DOES IT WORK?

Surprisingly simple...

making things happen.

The Internet

THE INTERNET (TM)

Hello there! SendHello there!

HTTPHTTP

HTTP

making things happen.

The Internet OF Things Category A

THE INTERNET OF THINGS (TM)

I want to go to.... Send

HTTPHTTP

HTTP

Photo Source: flickr.com/photos/bike/5153033439/in/photostream/

making things happen.

The Internet OF Things Category B

Photo Sources: flickr.com/photos/foxtongue/3235806474, flickr.com/photos/batterypower/398209685

THE INTERNET OF THINGS (TM)

HTTPHTTP

HTTP

So - What‘s This Rat PAck Thing?

IT‘s Surprisingly simple, too.

making things happen.

The ORIGINAL RAT PACK

Frank Sinatra,

DEAN Martin &

Sammy Davis (Jr.).

making things happen.

The IOT‘s RAT PACK

The Sinatra GEM,

The ARDUINO System &

The Ruby Language.

making things happen.

The RAT PACK System

THE INTERNET OF THINGS (TM)

The switchis on!

HTTPHTTP

HTTP

Rat PAck REmote Control. live demo.

making things happen.

Rat Pack Remote Control.

Source: github.com/5v3n/ratpack

WHAT‘S THE VALUE PROPOSITION?

Probably nothingBUT FUN. during the first three usages.

making things happen.

Talking Of FUN, Part I

Let‘s have a look atthe code.

the (whole) Sinatra Server.making things happen.

require 'sinatra'require 'json'require 'haml'

class RatPackServer < Sinatra::Application configure do set :activated, 0 end get '/' do haml :index, :locals => {:activated => settings.activated, :indicator_class => indicator(settings.activated)} end get '/status.json' do render_status_response end put '/status.json' do request.body.rewind data = JSON.parse request.body.read settings.activated = data['activated'] render_status_response endprivate def indicator(state) state == 0 ? :off : :on end def render_status_response "{\"activated\": #{settings.activated}}" endend

the Arduino Client, PT 1.making things happen.

#include "WiFly.h"#include "SPI.h"#include "Config.h"

WiFlyClient client(HOST, 80);

void setup(){ pinMode(buttonPin, INPUT); Serial.begin(9600); WiFly.begin(); if (WiFly.join(ssid, passphrase)) { Serial.println("associted with wifly network."); } else { Serial.println("Association failed."); while (1) { } } }

void loop(){ if(digitalRead(buttonPin) == LOW){ connectClient(generateHttpPut(HOST, RESOURCE, '0')); client.stop(); } else if(digitalRead(buttonPin) == HIGH){ connectClient(generateHttpPut(HOST, RESOURCE, '1')); client.stop(); } }

the Arduino Client, PT 2.making things happen.

char* generateHttpPut(char* host, char* resource, char occupied){ char postString[255]; sprintf(postString, "PUT %s HTTP/1.1\r\nUser-Agent: %s\r\nHost: %s\r\nContent-Length: 16\r\nContent-Type: application/json\r\n\r\n{\"activated\": %c}" , resource, USERAGENT, host, occupied);

return postString;}

void connectClient(char* http_request){ if (client.connect()) { client.print(http_request); client.println(); } else { Serial.println("connection failed"); }

while(!client.available()){ Serial.print("."); }}

Talking Of FUN, Part II

Let‘s have a look atthe Hardware.

the Arduino Hardware.making things happen.

THE BOTTOM LINE

Connecting plain old objects with the internet is easy.

THE BOTTOM LINE

Using the rat Pack system makes it actually dead easy.

THE BOTTOM LINE

So go get it & try the rat Pack system yourself.

Talking Of FUN, Most Important

It‘s all on GITHUB - Play with it, Fork it, Mod it. Enjoy!

github.com/5v3n/ratpack

Modding: Wearable Rat PAck.making things happen.Photo Source: flickr.com/photos/arduino_cc/8726021014

now let‘s share thoughts!

if you have experience in these fields: what do you think?

now let‘s share thoughts!

if you haven‘t any experience in these fields: what do you think?

making things happen.

let‘s keep in touch

@sven_kr @making_demakingthingshappen.desven@makingthingshappen.deMaterialS: github.com/5v3n/ratpack