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\title{Free to Measure!} \author{Georges Khaznadar
$<$\texttt{georgesk@debian.org}$>$} \institute{Lycée Jean Bart -- association WIMSÉDU -- association OFSET -- Debian member}  \date{November 2013}
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\begin{document} 

\begin{frame} \titlepage
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\begin{frame} \frametitle{Contents}
      \tableofcontents 
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\begin{frame}
  \frametitle{Acknowledgments}
Thanks to INRIA and FING for the opportunity to give this short talk.

I thank particularly Ajith Kumar, and Jithin BP who made this project possible.
\end{frame}
\begin{frame}
  \frametitle{About the author, and collaborations}

  \begin{minipage}{1.0\linewidth}
    \begin{wrapfigure}{l}{0.25\textwidth}
      \img[height=0.25\textheight]{img/ajith}
    \end{wrapfigure}
    Ajith KUMAR is the inventor of expEYES-Junior box, which is part
    of a series of free/libre and unexpensive hardware created for the
    project PHOENIX: \alert{Ph}ysics with \alert{Ho}me-made
    Equipm\alert{en}t and \alert{I}nnovative E\alert{x}periments. This
    project aims to develop teaching of experimental science in India.
  \end{minipage}
\\[2em]
\begin{minipage}{1.0\linewidth}
  \begin{wrapfigure}{l}{0.25\textwidth}
    \img[width=0.25\textwidth]{img/gk-nuit}
  \end{wrapfigure}
  Georges Khaznadar is a teacher of physics and chemistry in Lycée
  Jean Bart, Dunkirk, France.

  He maintains the package \texttt{expeyes} for
  the distribution Debian and its derivatives (Ubuntu, etc.)
\end{minipage}
\\[2em]
They met recently at ``Rencontres Mondiales des Logiciels Libres''
in Brussels, in July 2013.
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\section{The expEYES box}
\subsection{An oscillographe as cheap as a book}
\begin{frame}
  \frametitle{An oscillographe as cheap as a book}
  \setlength{\unitlength}{1.0\linewidth}
  \begin{picture}(1,0.45)
    \put (0.35,0.17){
      \img[width=0.45\textwidth]{img/expeyes-en-tas}
    }
    \put (0,0){
      \img[width=0.5\textwidth]{img/eleves-mpi}
    }
  \end{picture}
  Between years 2006  and 2010, high-level sportive students of Lycée
  Jean Bart were allowed to attend a distance training for an option
  named ``Mesures Physiques et Informatique'' (Physical measurement and
  Computer Science). An expEYES box was lent to each one of them.
\end{frame}

\subsection{Freedom: does it matter ?}
\begin{frame}
  \frametitle{Software is free, as well as the design of the box}
  \begin{wrapfigure}{l}{0.33\textwidth}
    \img[height=0.33\textheight]{img/expeyes}
  \end{wrapfigure}
  The schematics, the printed board design, and the micro-controller's
  firmware are all published under free/libre licenses.

  Every competitor willing to manufacture the box can do
  it\footnote{The author reserves the right to use the name expEYES, if a
    sample of good quality is sent to him.}.
\\[1em]
  The software driving the box in under GNU GPL-3 License; a library in C
  and another in Python are available. User-level programs, either for
  general purpose or more specialized use, are easy to customize, provided you
  have some minimal skill.

\end{frame}

\section{Next step : a self-contained appliance}
\subsection{Limiting factors}
\begin{frame}
  \frametitle{Costs}
  \begin{wrapfigure}{l}{0.33\textwidth}
    \img[height=0.33\textheight]{img/india}
  \end{wrapfigure}
  Ajith Kumar targets Indian students and teachers first. If this project
  succeeds, the world will be next... Can educational institutions be
  considered as the only target?
  \\[2em]
  ExpEYES-Jr is sold 2000 RH (unit price). So the computer to use it is
  much more expensive.
  \\[2em]
  Hence the ongoing work: create a single board featuring a low-power
  computer and the components of expEYES.
\end{frame}

\subsection{Ongoing experiments}
\begin{frame}
  \frametitle{ExpEYES with existing miniature boards}
  \begin{wrapfigure}{l}{0.33\textwidth}
    ~\\[-5em]
    \img[width=0.33\textwidth]{img/eyes4pi-without-cover}
  \end{wrapfigure}
  Among first tries, expEYES was connected to a Raspberry PI. It does work,
  and with a few extra components, one can access the measurement box by a
  WIFI connection.
  \\[2em]
  The main idea was to use expEYES with a popular low-cost computer; another
  successful example is with the \HREF{http://www.firstpost.com/topic/place/new-delhi-expeyes-junior-running-on-aakashwith-ubuntu-1210-video-oMFFx91vdKI-140-8.html}{Aakash tablet}.
\end{frame}

\subsection{What about telephones?}
\begin{frame}
  \frametitle{First tries, this summer}
  Last August, Jithin BP, a son of Ajith Kumar hacked on top of a few
  source code authored during ``RMLL 2013'', to access features of expEYES
  via a small web service powered by CherryPy.
  \setlength{\unitlength}{1.0\linewidth}
  \begin{picture}(1,0.5)
    \put (0.30,0.15){
      \img[width=0.33\textwidth]{img/snap1}
    }
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      \img[width=0.33\textwidth]{img/snap3}
    }
    \put (0,0){
      \img[width=0.33\textwidth]{img/snap2}
    }
    \put (0.33, 0.0){
      ... remote measurement made easy for all!
    }
  \end{picture}
\end{frame}

\section{Links}
\begin{frame}
  \frametitle{Useful links}
  {\Large
    
    \begin{itemize}
    \item \HREF{http://www.google.com/search?q=expeyes}{expEYES} as a keyword
    is useful in every web search engine.
    \item The project in India: \HREF{http://expeyes.in}{expeyes.in}
    \item Mailing list: \HREF{http://www.freelists.org/list/phoenix-project}{phoenix-project@freelists.org}
    \item Find this speech, and other ones, at \HREF{http://georges.khaznadar.fr/docs/speeches/2013-expeyes/}{http://georges.khaznadar.fr/docs/speeches/...}
    \end{itemize}
  }
\end{frame}
\begin{frame}
  \frametitle{Credits}
\imgref{img/gk-nuit}{ (c) 2011 G. Khaznadar, \licenceCcBySa}\\
\imgref{img/ajith}{ (c) 2012 wavicles (http://beta.metastudio.org/objects/authors/wavicles) \licenceCcBySa}\\
\imgref{img/expeyes-en-tas}{ (c) 2006 G. Khaznadar, \licenceCcBySa}\\
\imgref{img/eleves-mpi}{ (c) 2009 G. Khaznadar, \licenceCcBySa}\\
\imgref{img/expeyes}{ (c) 2011 Ajith Kumar, \licenceCcBySa}\\
\imgref{img/india}{ (c) 2013 G. Khaznadar, \licenceCcBySa}\\
\imgref{img/eyes4pi-without-cover}{ part of a photograph from \HREF{http://www.raspberrypi.org/archives/1228}{www.raspberrypi.org}, \licenceInconnue}\\
\end{frame}
\begin{frame}
  \frametitle{Credits}
\imgref{img/snap1}{ (c) 2013 Jithin BP, \licenceCcBySa}\\
\imgref{img/snap2}{ (c) 2013 Jithin BP, \licenceCcBySa}\\
\imgref{img/snap3}{ (c) 2013 Jithin BP, \licenceCcBySa}\\
\end{frame}
\end{document}
