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    <article-meta>
      <title-group>
        <article-title>Prototyping Connected Tangible Interactions with Kniwwelino</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Christian Moll</string-name>
          <email>christian.moll@list.lu</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Johannes Hermen</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Valérie Maquil</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Henrique Rangel</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>John-Nathan Hill</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Author Keywords Physical computing, Tangible User Interfaces, Internet of Things</institution>
          ,
          <addr-line>Prototyping</addr-line>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Luxembourg Institute of Science and Technology 5</institution>
          ,
          <addr-line>avenue des Hauts Fourneaux, L-4362 Esch/Alzette</addr-line>
          ,
          <country country="LU">Luxembourg</country>
        </aff>
      </contrib-group>
      <abstract>
        <p>This workshop will introduce Kniwwelino, a new Arduino compatible microcontroller platform, supporting the electronic prototyping of interactive and connected objects. Kniwwelino provides sensors and actuators encapsulated with Wi-Fi functionality, made easily accessible through a specially developed Arduino library. The workshop is designed as continuation of workshop 2, dedicated to the actual implementation of the previously elaborated ideas. Aim is to explore the possibilities and limitations of the platform for prototyping tangible interaction enabled IoT projects.</p>
      </abstract>
    </article-meta>
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  <body>
    <sec id="sec-1">
      <title>-</title>
      <p>The group of Wi-Fi enabled development boards consists of
the ones that come with a Wi-Fi hardware in addition to the
microcontroller and the ones which integrate the Wi-Fi into
the microcontroller as so called System on a Chip (SoC). In
the last group the ESP8266 has to be highlighted as it is very
popular in the Maker scene, because there is a brought
support in different programming languages like Arduino,
Lua, Micro Pyhton, etc.</p>
      <p>With Kniwwelino, we seek to provide a low-cost
development platform providing easy access to IoT
functionalities, such as sending and receiving sensor values
over lean message based communication protocols.
Furthermore, Kniwwelino should be sufficiently small to be
integrated in any type of object and provide easy to use
extensions with the related software libraries.</p>
      <p>KNIWWELINO
The Kniwwelino hardware consists of a 5x5 LED matrices,
a RGB LED and two push buttons. There are additional ports
that can be used to extend the board by additional sensors
and other peripherals. The underlaying micro-controller
platform is also embedding a Wi-Fi stack. That enables the
Kniwwelino to connect itself to other Kniwwelino's over the
Internet. By implementing standard IoT message protocols,
like MQTT it could be easily be integrated in existing IoT
installations. The small size of the printed circuit board
makes it possible to embed the Kniwwelino in nearly every
crafted enclosure or object to not limit the development of
the child's creativity.
WORKSHOP DESCRIPTION
Aim of the workshop is to explore the possibilities and
limitations of the Kniwwelino platform for prototyping
tangible interaction enabled IoT projects.</p>
      <p>
        The workshop is designed as a continuation of the workshop
“Interaction with the Internet of Tangible Things (IoTT)” [
        <xref ref-type="bibr" rid="ref1">1</xref>
        ]
and will first give an introduction on how to setup the
Arduino IDE to work with the Kniwwelino. After a quick
walk-through of the Kniwwelino library functions, showing
how to use the core functionality, we will start to develop
concepts in small groups how to implement a first functional
prototype from the paper designs developed in the previous
workshop. Workshop participants will then implement the
concepts in software, as well as embed the hardware into a
cardboard prototype.
      </p>
      <p>In the end of the workshop each group will present their
prototype to the audience. The workshop finishes with a
discussion on the encountered problems and identified
opportunities.</p>
    </sec>
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