diff --git a/art/Untitled Sketch.fzz b/art/Untitled Sketch.fzz
new file mode 100644
index 0000000..c3183c2
Binary files /dev/null and b/art/Untitled Sketch.fzz differ
diff --git a/presentations/workshop-may-2016/.gitignore b/presentations/workshop-may-2016/.gitignore
new file mode 100644
index 0000000..b588b50
--- /dev/null
+++ b/presentations/workshop-may-2016/.gitignore
@@ -0,0 +1,7 @@
+main.aux
+main.log
+main.nav
+main.out
+main.snm
+main.toc
+talk.tex
diff --git a/presentations/workshop-may-2016/Makefile b/presentations/workshop-may-2016/Makefile
new file mode 100644
index 0000000..ab774e7
--- /dev/null
+++ b/presentations/workshop-may-2016/Makefile
@@ -0,0 +1,27 @@
+SOURCES=$(wildcard *.md)
+PDFS=$(SOURCES:.md=.pdf)
+
+all: $(PDFS)
+
+%.pdf: $(SOURCES)
+	pandoc --slide-level 2 -t beamer -V theme:metropolis --template template.tex $(@:.pdf=.md) -o $@
+	gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH \
+		-sOutputFile=$(@:.pdf=.ebook.pdf) $@
+
+clean:
+	rm -f *.pdf
+
+live: $(PDFS)
+	evince $(PDFS) &
+	while /bin/true; do inotifywait $(SOURCES); make all; done
+
+present: setup-projector $(PDFS)
+	pdfpc $(PDFS)
+	make disable-projector
+
+setup-projector:
+	xrandr --output VGA1 --above LVDS1 --auto
+
+disable-projector:
+	xrandr --output VGA1 --off
+
diff --git a/presentations/workshop-may-2016/beamercolorthememetropolis.sty b/presentations/workshop-may-2016/beamercolorthememetropolis.sty
new file mode 100644
index 0000000..6b23f8d
--- /dev/null
+++ b/presentations/workshop-may-2016/beamercolorthememetropolis.sty
@@ -0,0 +1,133 @@
+%%
+%% This is file `beamercolorthememetropolis.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% beamercolorthememetropolis.dtx  (with options: `package')
+%% ---------------------------------------------------------------------------
+%% Copyright 2015 Matthias Vogelgesang and the LaTeX community. A full list of
+%% contributors can be found at
+%% 
+%%     https://github.com/matze/mtheme/graphs/contributors
+%% 
+%% and the original template was based on the HSRM theme by Benjamin Weiss.
+%% 
+%% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+%% International License (https://creativecommons.org/licenses/by-sa/4.0/).
+%% ---------------------------------------------------------------------------
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamercolorthememetropolis}[2016/03/14 Metropolis color theme]
+\RequirePackage{pgfopts}
+\pgfkeys{
+  /metropolis/color/block/.cd,
+    .is choice,
+    transparent/.code=\metropolis@block@transparent,
+    fill/.code=\metropolis@block@fill,
+}
+\pgfkeys{
+  /metropolis/color/background/.cd,
+    .is choice,
+    dark/.code=\metropolis@colors@dark,
+    light/.code=\metropolis@colors@light,
+}
+\newcommand{\metropolis@color@setdefaults}{
+  \pgfkeys{/metropolis/color/.cd,
+    background=light,
+    block=transparent,
+  }
+}
+\definecolor{mDarkBrown}{HTML}{604c38}
+\definecolor{mDarkTeal}{HTML}{23373b}
+\definecolor{mLightBrown}{HTML}{EB811B}
+\definecolor{mLightGreen}{HTML}{14B03D}
+\newcommand{\metropolis@colors@dark}{
+  \setbeamercolor{normal text}{%
+    fg=black!2,
+    bg=mDarkTeal
+  }
+}
+\newcommand{\metropolis@colors@light}{
+  \setbeamercolor{normal text}{%
+    fg=mDarkTeal,
+    bg=black!2
+  }
+}
+\setbeamercolor{alerted text}{%
+  fg=mLightBrown
+}
+\setbeamercolor{example text}{%
+  fg=mLightGreen
+}
+\setbeamercolor{titlelike}{use=normal text, parent=normal text}
+\setbeamercolor{author}{use=normal text, parent=normal text}
+\setbeamercolor{date}{use=normal text, parent=normal text}
+\setbeamercolor{institute}{use=normal text, parent=normal text}
+\setbeamercolor{structure}{use=normal text, fg=normal text.fg}
+\setbeamercolor{palette primary}{%
+  use=normal text,
+  fg=normal text.bg,
+  bg=normal text.fg
+}
+\setbeamercolor{frametitle}{%
+  use=palette primary,
+  parent=palette primary
+}
+\setbeamercolor{progress bar}{%
+  use=alerted text,
+  fg=alerted text.fg,
+  bg=alerted text.fg!50!black!30
+}
+\setbeamercolor{title separator}{
+  use=progress bar,
+  parent=progress bar
+}
+\setbeamercolor{progress bar in head/foot}{%
+  use=progress bar,
+  parent=progress bar
+}
+\setbeamercolor{progress bar in section page}{
+  use=progress bar,
+  parent=progress bar
+}
+\newcommand{\metropolis@block@transparent}{
+  \setbeamercolor{block title}{%
+    use=normal text,
+    fg=normal text.fg,
+    bg=
+  }
+  \setbeamercolor{block body}{
+    bg=
+  }
+}
+\newcommand{\metropolis@block@fill}{
+  \setbeamercolor{block title}{%
+    use=normal text,
+    fg=normal text.fg,
+    bg=normal text.bg!80!fg
+  }
+  \setbeamercolor{block body}{
+    use={block title, normal text},
+    bg=block title.bg!50!normal text.bg
+  }
+}
+\setbeamercolor{block title alerted}{%
+    use={block title, alerted text},
+    bg=block title.bg,
+    fg=alerted text.fg
+}
+\setbeamercolor{block title example}{%
+    use={block title, example text},
+    bg=block title.bg,
+    fg=example text.fg
+}
+\setbeamercolor{block body alerted}{use=block body, parent=block body}
+\setbeamercolor{block body example}{use=block body, parent=block body}
+\setbeamercolor{footnote}{fg=normal text.fg!90}
+\setbeamercolor{footnote mark}{fg=.}
+\metropolis@color@setdefaults
+\ProcessPgfPackageOptions{/metropolis/color}
+\mode<all>
+\endinput
+%%
+%% End of file `beamercolorthememetropolis.sty'.
diff --git a/presentations/workshop-may-2016/beamerfontthememetropolis.sty b/presentations/workshop-may-2016/beamerfontthememetropolis.sty
new file mode 100644
index 0000000..8ecd167
--- /dev/null
+++ b/presentations/workshop-may-2016/beamerfontthememetropolis.sty
@@ -0,0 +1,283 @@
+%%
+%% This is file `beamerfontthememetropolis.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% beamerfontthememetropolis.dtx  (with options: `package')
+%% ---------------------------------------------------------------------------
+%% Copyright 2015 Matthias Vogelgesang and the LaTeX community. A full list of
+%% contributors can be found at
+%% 
+%%     https://github.com/matze/mtheme/graphs/contributors
+%% 
+%% and the original template was based on the HSRM theme by Benjamin Weiss.
+%% 
+%% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+%% International License (https://creativecommons.org/licenses/by-sa/4.0/).
+%% ---------------------------------------------------------------------------
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamerfontthememetropolis}[2016/03/14 Metropolis font theme]
+\RequirePackage{etoolbox}
+\RequirePackage{ifxetex}
+\RequirePackage{ifluatex}
+\RequirePackage{pgfopts}
+\ifboolexpr{bool {xetex} or bool {luatex}}{
+  \RequirePackage[no-math]{fontspec}
+  \newcounter{fontsnotfound}
+  \newcommand{\checkfont}[1]{%
+    \suppressfontnotfounderror=1%
+    \font\x = "#1" at 10pt
+    \selectfont
+    \ifx\x\nullfont%
+      \stepcounter{fontsnotfound}%
+    \fi%
+    \suppressfontnotfounderror=0%
+  }
+
+  \newcommand{\iffontsavailable}[3]{%
+    \setcounter{fontsnotfound}{0}%
+    \expandafter\forcsvlist\expandafter%
+    \checkfont\expandafter{#1}%
+    \ifnum\value{fontsnotfound}=0%
+      #2%
+    \else%
+      #3%
+    \fi%
+  }
+  \iffontsavailable{Fira Sans Light,%
+                    Fira Sans Light Italic,%
+                    Fira Sans,%
+                    Fira Sans Italic}%
+  {%
+    \setsansfont[ItalicFont={Fira Sans Light Italic},%
+                 BoldFont={Fira Sans},%
+                 BoldItalicFont={Fira Sans Italic}]%
+                {Fira Sans Light}%
+  }{%
+    \iffontsavailable{Fira Sans Light OT,%
+                      Fira Sans Light Italic OT,%
+                      Fira Sans OT,%
+                      Fira Sans Italic OT}%
+    {%
+      \setsansfont[ItalicFont={Fira Sans Light Italic OT},%
+                   BoldFont={Fira Sans OT},%
+                   BoldItalicFont={Fira Sans Italic OT}]%
+                  {Fira Sans Light OT}%
+    }{%
+      \PackageWarning{beamerthememetropolis}{%
+        Could not find Fira Sans fonts%
+      }
+    }
+  }
+  \iffontsavailable{Fira Mono, Fira Mono Bold}{%
+    \setmonofont[BoldFont={Fira Mono Medium}]{Fira Mono}%
+  }{%
+    \iffontsavailable{Fira Mono OT, Fira Mono Bold OT}{%
+      \setmonofont[BoldFont={Fira Mono Medium OT}]{Fira Mono OT}%
+    }{%
+      \PackageWarning{beamerthememetropolis}{%
+        Could not find Fira Mono fonts%
+      }
+    }
+  }
+  \AtBeginEnvironment{tabular}{%
+    \addfontfeature{Numbers={Monospaced}}%
+  }
+}{%
+  \PackageWarning{beamerthememetropolis}{%
+    You need to compile with XeLaTeX or LuaLaTeX to use the Fira fonts%
+  }
+}
+\setbeamerfont{title}{size=\Large,%
+                      series=\bfseries}
+\setbeamerfont{author}{size=\small}
+\setbeamerfont{date}{size=\small}
+\setbeamerfont{section title}{size=\Large,%
+                              series=\bfseries}
+\setbeamerfont{block title}{size=\normalsize,%
+                            series=\bfseries}
+\setbeamerfont{block title alerted}{size=\normalsize,%
+                                    series=\bfseries}
+\setbeamerfont*{subtitle}{size=\large}
+\setbeamerfont{frametitle}{size=\large,%
+                           series=\bfseries}
+\setbeamerfont{caption}{size=\small}
+\setbeamerfont{caption name}{series=\bfseries}
+\setbeamerfont{description item}{series=\bfseries}
+\setbeamerfont{page number in head/foot}{size=\scriptsize}
+\setbeamerfont{bibliography entry author}{size=\normalsize,%
+                                          series=\normalfont}
+\setbeamerfont{bibliography entry title}{size=\normalsize,%
+                                         series=\bfseries}
+\setbeamerfont{bibliography entry location}{size=\normalsize,%
+                                            series=\normalfont}
+\setbeamerfont{bibliography entry note}{size=\small,%
+                                        series=\normalfont}
+\setbeamerfont{standout}{size=\Large,%
+                         series=\bfseries}
+\pgfkeys{
+  /metropolis/font/titleformat title/.cd,
+    .is choice,
+    regular/.code={%
+      \let\metropolis@titleformat\@empty%
+      \setbeamerfont{title}{shape=\normalfont}%
+    },
+    smallcaps/.code={%
+      \let\metropolis@titleformat\@empty%
+      \setbeamerfont{title}{shape=\scshape}%
+    },
+    allsmallcaps/.code={%
+      \let\metropolis@titleformat\lowercase%
+      \setbeamerfont{title}{shape=\scshape}%
+      \PackageWarning{beamerthememetropolis}{%
+        Be aware that titleformat title=allsmallcaps can lead to problems%
+      }
+    },
+    allcaps/.code={%
+      \let\metropolis@titleformat\uppercase%
+      \setbeamerfont{title}{shape=\normalfont}
+      \PackageWarning{beamerthememetropolis}{%
+        Be aware that titleformat title=allcaps can lead to problems%
+      }
+    },
+}
+\pgfkeys{
+  /metropolis/font/titleformat subtitle/.cd,
+    .is choice,
+    regular/.code={%
+      \let\metropolis@subtitleformat\@empty%
+      \setbeamerfont{subtitle}{shape=\normalfont}%
+    },
+    smallcaps/.code={%
+      \let\metropolis@subtitleformat\@empty%
+      \setbeamerfont{subtitle}{shape=\scshape}%
+    },
+    allsmallcaps/.code={%
+      \let\metropolis@subtitleformat\lowercase%
+      \setbeamerfont{subtitle}{shape=\scshape}%
+      \PackageWarning{beamerthememetropolis}{%
+        Be aware that titleformat subtitle=allsmallcaps can lead to problems%
+      }
+    },
+    allcaps/.code={%
+      \let\metropolis@subtitleformat\uppercase%
+      \setbeamerfont{subtitle}{shape=\normalfont}%
+      \PackageWarning{beamerthememetropolis}{%
+        Be aware that titleformat subtitle=allcaps can lead to problems%
+      }
+    },
+}
+\pgfkeys{
+  /metropolis/font/titleformat section/.cd,
+    .is choice,
+    regular/.code={%
+      \let\metropolis@sectiontitleformat\@empty%
+      \setbeamerfont{section title}{shape=\normalfont}%
+    },
+    smallcaps/.code={%
+      \let\metropolis@sectiontitleformat\@empty%
+      \setbeamerfont{section title}{shape=\scshape}%
+    },
+    allsmallcaps/.code={%
+      \let\metropolis@sectiontitleformat\MakeLowercase%
+      \setbeamerfont{section title}{shape=\scshape}%
+      \PackageWarning{beamerthememetropolis}{%
+        Be aware that titleformat section=allsmallcaps can lead to problems%
+      }
+    },
+    allcaps/.code={%
+      \let\metropolis@sectiontitleformat\MakeUppercase%
+      \setbeamerfont{section title}{shape=\normalfont}%
+      \PackageWarning{beamerthememetropolis}{%
+        Be aware that titleformat section=allcaps can lead to problems%
+      }
+    },
+}
+\pgfkeys{
+  /metropolis/font/titleformat frame/.cd,
+    .is choice,
+    regular/.code={%
+      \let\metropolis@frametitleformat\@empty%
+      \setbeamerfont{frametitle}{shape=\normalfont}%
+    },
+    smallcaps/.code={%
+      \let\metropolis@frametitleformat\@empty%
+      \setbeamerfont{frametitle}{shape=\scshape}%
+    },
+    allsmallcaps/.code={%
+      \let\metropolis@frametitleformat\MakeLowercase%
+      \setbeamerfont{frametitle}{shape=\scshape}%
+      \PackageWarning{beamerthememetropolis}{%
+        Be aware that titleformat frame=allsmallcaps can lead to problems%
+      }
+    },
+    allcaps/.code={%
+      \let\metropolis@frametitleformat\MakeUppercase%
+      \setbeamerfont{frametitle}{shape=\normalfont}
+      \PackageWarning{beamerthememetropolis}{%
+        Be aware that titleformat frame=allcaps can lead to problems%
+      }
+    },
+}
+\pgfkeys{
+  /metropolis/font/.cd,
+  titleformattitle/.code=\pgfkeysalso{titleformat title=#1},
+  titleformatsubtitle/.code=\pgfkeysalso{titleformat subtitle=#1},
+  titleformatsection/.code=\pgfkeysalso{titleformat section=#1},
+  titleformatframe/.code=\pgfkeysalso{titleformat frame=#1},
+}
+\newcommand{\metropolis@font@setdefaults}{
+  \pgfkeys{/metropolis/font/.cd,
+    titleformat title=regular,
+    titleformat subtitle=regular,
+    titleformat section=regular,
+    titleformat frame=regular,
+  }
+}
+\def\metropolis@titleformat#1{#1}
+\def\metropolis@subtitleformat#1{#1}
+\def\metropolis@sectiontitleformat#1{#1}
+\def\metropolis@frametitleformat#1{#1}
+\patchcmd{\beamer@title}%
+  {\def\inserttitle{#2}}%
+  {\def\inserttitle{\metropolis@titleformat{#2}}}%
+  {}%
+  {\PackageError{beamerfontthememetropolis}{Patching title failed}}
+\patchcmd{\beamer@subtitle}%
+  {\def\insertsubtitle{#2}}%
+  {\def\insertsubtitle{\metropolis@subtitleformat{#2}}}%
+  {}%
+  {\PackageError{beamerfontthememetropolis}{Patching subtitle failed}}
+\patchcmd{\sectionentry}
+  {\def\insertsectionhead{#2}}
+  {\def\insertsectionhead{\metropolis@sectiontitleformat{#2}}}
+  {}
+  {\PackageError{beamerfontthememetropolis}{Patching section title failed}}
+\patchcmd{\beamer@section}
+  {\def\insertsectionhead{\hyperlink{Navigation\the\c@page}{#1}}}
+  {\def\insertsectionhead{\hyperlink{Navigation\the\c@page}{%
+    \metropolis@sectiontitleformat{#1}}}}
+  {}
+  {\PackageError{beamerfontthememetropolis}{Patching section title failed}}
+\patchcmd{\beamer@@frametitle}
+  {\beamer@ifempty{#2}{}{%
+      \gdef\insertframetitle{{#2\ifnum\beamer@autobreakcount>0\relax{}\space%
+      \usebeamertemplate*{frametitle continuation}\fi}}%
+    \gdef\beamer@frametitle{#2}%
+    \gdef\beamer@shortframetitle{#1}%
+    }}
+  {\beamer@ifempty{#2}{}{%
+      \gdef\insertframetitle{{\metropolis@frametitleformat{#2}\ifnum%
+      \beamer@autobreakcount>0\relax{}\space%
+      \usebeamertemplate*{frametitle continuation}\fi}}%
+    \gdef\beamer@frametitle{#2}%
+    \gdef\beamer@shortframetitle{#1}%
+    }}
+  {}
+  {\PackageError{beamerfontthememetropolis}{Patching frame title failed}}
+\metropolis@font@setdefaults
+\ProcessPgfPackageOptions{/metropolis/font}
+\endinput
+%%
+%% End of file `beamerfontthememetropolis.sty'.
diff --git a/presentations/workshop-may-2016/beamerinnerthememetropolis.sty b/presentations/workshop-may-2016/beamerinnerthememetropolis.sty
new file mode 100644
index 0000000..8adb1fb
--- /dev/null
+++ b/presentations/workshop-may-2016/beamerinnerthememetropolis.sty
@@ -0,0 +1,281 @@
+%%
+%% This is file `beamerinnerthememetropolis.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% beamerinnerthememetropolis.dtx  (with options: `package')
+%% ---------------------------------------------------------------------------
+%% Copyright 2015 Matthias Vogelgesang and the LaTeX community. A full list of
+%% contributors can be found at
+%% 
+%%     https://github.com/matze/mtheme/graphs/contributors
+%% 
+%% and the original template was based on the HSRM theme by Benjamin Weiss.
+%% 
+%% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+%% International License (https://creativecommons.org/licenses/by-sa/4.0/).
+%% ---------------------------------------------------------------------------
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamerinnerthememetropolis}[2016/03/14 Metropolis inner theme]
+\RequirePackage{etoolbox}
+\RequirePackage{keyval}
+\RequirePackage{calc}
+\RequirePackage{pgfopts}
+\RequirePackage{tikz}
+\pgfkeys{
+  /metropolis/inner/sectionpage/.cd,
+    .is choice,
+    none/.code=\metropolis@disablesectionpage,
+    simple/.code={\metropolis@enablesectionpage
+                  \setbeamertemplate{section page}[simple]},
+    progressbar/.code={\metropolis@enablesectionpage
+                       \setbeamertemplate{section page}[progressbar]},
+}
+\pgfkeys{
+  /metropolis/inner/subsectionpage/.cd,
+    .is choice,
+    none/.code=\metropolis@disablesubsectionpage,
+    simple/.code={\metropolis@enablesubsectionpage
+                  \setbeamertemplate{section page}[simple]},
+    progressbar/.code={\metropolis@enablesubsectionpage
+                       \setbeamertemplate{section page}[progressbar]},
+}
+\newcommand{\metropolis@inner@setdefaults}{
+  \pgfkeys{/metropolis/inner/.cd,
+    sectionpage=progressbar,
+    subsectionpage=none
+  }
+}
+\setbeamertemplate{title page}{
+  \begin{minipage}[b][\paperheight]{\textwidth}
+    \ifx\inserttitlegraphic\@empty\else\usebeamertemplate*{title graphic}\fi
+    \vfill%
+    \ifx\inserttitle\@empty\else\usebeamertemplate*{title}\fi
+    \ifx\insertsubtitle\@empty\else\usebeamertemplate*{subtitle}\fi
+    \usebeamertemplate*{title separator}
+    \ifx\beamer@shortauthor\@empty\else\usebeamertemplate*{author}\fi
+    \ifx\insertdate\@empty\else\usebeamertemplate*{date}\fi
+    \ifx\insertinstitute\@empty\else\usebeamertemplate*{institute}\fi
+    \vfill
+    \vspace*{1mm}
+  \end{minipage}
+}
+\def\maketitle{%
+  \ifbeamer@inframe
+    \titlepage
+  \else
+    \frame[plain,noframenumbering]{\titlepage}
+  \fi
+}
+\def\titlepage{%
+  \usebeamertemplate{title page}
+}
+\setbeamertemplate{title graphic}{
+  \vbox to 0pt {
+    \vspace*{2em}
+    \inserttitlegraphic%
+  }%
+  \nointerlineskip%
+}
+\setbeamertemplate{title}{
+  \raggedright%
+  \linespread{1.0}%
+  \inserttitle%
+  \par%
+  \vspace*{0.5em}
+}
+\setbeamertemplate{subtitle}{
+  \insertsubtitle%
+  \par%
+  \vspace*{0.5em}
+}
+\setbeamertemplate{title separator}{
+  \begin{tikzpicture}
+    \fill[fg] (0,0) rectangle (\textwidth, 0.4pt);
+  \end{tikzpicture}%
+  \par%
+}
+\setbeamertemplate{author}{
+  \vspace*{2em}
+  \insertauthor%
+  \par%
+  \vspace*{0.25em}
+}
+\setbeamertemplate{date}{
+  \insertdate%
+  \par%
+}
+\setbeamertemplate{institute}{
+  \vspace*{3mm}
+  \insertinstitute%
+  \par%
+}
+\defbeamertemplate{section page}{simple}{
+  \begin{center}
+    \usebeamercolor[fg]{section title}
+    \usebeamerfont{section title}
+    \insertsectionhead\par
+    \ifx\insertsubsection\@empty\else
+      \usebeamercolor[fg]{subsection title}
+      \usebeamerfont{subsection title}
+      \insertsubsection
+    \fi
+  \end{center}
+}
+\defbeamertemplate{section page}{progressbar}{
+  \centering
+  \begin{minipage}{22em}
+    \raggedright
+    \usebeamercolor[fg]{section title}
+    \usebeamerfont{section title}
+    \insertsectionhead\\[-1ex]
+    \usebeamertemplate*{progress bar in section page}
+    \par
+    \ifx\insertsubsection\@empty\else%
+      \usebeamercolor[fg]{subsection title}%
+      \usebeamerfont{subsection title}%
+      \insertsubsection
+    \fi
+  \end{minipage}
+  \par
+  \vspace{\baselineskip}
+}
+\newcommand{\metropolis@disablesectionpage}{
+  \AtBeginSection{
+    % intentionally empty
+  }
+}
+\newcommand{\metropolis@enablesectionpage}{
+  \AtBeginSection{
+    \ifbeamer@inframe
+      \sectionpage
+    \else
+      \frame[plain,c,noframenumbering]{\sectionpage}
+    \fi
+  }
+}
+\setbeamertemplate{subsection page}{%
+  \usebeamertemplate*{section page}
+}
+\newcommand{\metropolis@disablesubsectionpage}{
+  \AtBeginSubsection{
+    % intentionally empty
+  }
+}
+\newcommand{\metropolis@enablesubsectionpage}{
+  \AtBeginSubsection{
+    \ifbeamer@inframe
+      \subsectionpage
+    \else
+      \frame[plain,c,noframenumbering]{\subsectionpage}
+    \fi
+  }
+}
+\newlength{\metropolis@progressonsectionpage}
+\setbeamertemplate{progress bar in section page}{
+  \setlength{\metropolis@progressonsectionpage}{%
+    \textwidth * \ratio{\insertframenumber pt}{\inserttotalframenumber pt}%
+  }%
+  \begin{tikzpicture}
+    \fill[bg] (0,0) rectangle (\textwidth, 0.4pt);
+    \fill[fg] (0,0) rectangle (\metropolis@progressonsectionpage, 0.4pt);
+  \end{tikzpicture}%
+}
+\def\inserttotalframenumber{100}
+\newlength{\metropolis@blocksep}
+\newlength{\metropolis@blockadjust}
+\setlength{\metropolis@blocksep}{0.75ex}
+\setlength{\metropolis@blockadjust}{0.25ex}
+\providecommand{\metropolis@strut}{%
+  \vphantom{ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz()}%
+}
+\newcommand{\metropolis@block}[1]{
+  \par\vskip\medskipamount%
+  \setlength{\parskip}{0pt}
+  \ifbeamercolorempty[bg]{block title#1}{%
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new file mode 100644
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+%%
+%% This is file `pgfplotsthemetol.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% pgfplotsthemetol.dtx  (with options: `package')
+%% ---------------------------------------------------------------------------
+%% Copyright 2015 Matthias Vogelgesang and the LaTeX community. A full list of
+%% contributors can be found at
+%% 
+%%     https://github.com/matze/mtheme/graphs/contributors
+%% 
+%% and the original template was based on the HSRM theme by Benjamin Weiss.
+%% 
+%% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+%% International License (https://creativecommons.org/licenses/by-sa/4.0/).
+%% ---------------------------------------------------------------------------
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{pgfplotsthemetol}
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diff --git a/presentations/workshop-may-2016/talk.ebook.pdf b/presentations/workshop-may-2016/talk.ebook.pdf
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+---
+author: Fred Cahill, Shawn Nock
+institute: Unlondon Digital Media Assoc.
+title: Arduino for the Arts
+lang: en-CA
+colorlinks: true
+...
+
+# What's in your kit?
+
+## Kit Contents
+
+- Arduino Uno R3 Clone
+- Solderless Breadboard
+- Connecting wires
+- LEDs
+- Resistors, Potentiometer
+- Buzzer
+- IR Remote
+- IR Receiver
+
+## What is Arduino?
+
+\begin{center}
+$\mu$C + reset button + led + USB communication
+\end{center}
+
+It's a kit (on a board) with the bare minimum components to easily use the $\mu$C
+hardware. They do the basic, boring design needed for any board, so users only
+need to add the neat stuff.
+
+## Arduino UNO
+
+The Arduino variety that we are using is the Arduino UNO.
+
+- Processor: Atmel Atmega328p
+- Memory: 2K RAM + 32K Flash
+- FT232RL Logic-level Serial$\leftrightarrow$USB Chip
+
+## Arduino Software
+
+The Arduino folks also adapted an *Integrated Development Environment*
+(IDE) to their boards. This IDE allows users to easily write programs
+for their boards and then write the programs to the $\mu$C.
+
+\Large Get the Arduino IDE: [https://www.arduino.cc/en/Main/Software](https://www.arduino.cc/en/Main/Software)
+
+# Circuit Basics
+
+## Diode
+
+\begin{columns}[c]
+\column{0.50\textwidth}
+
+\begin{itemize}
+\item One way value for current\footnotemark[1]
+\item LED $\equiv$ Light Emitting Diode
+\item Band marks (-)\footnotemark[2]
+\item Longer leg marks (+)
+\end{itemize}
+
+\column{0.50\textwidth}
+\begin{center}
+\includegraphics[width=0.75\textwidth]{images/diode.png}
+\vspace{5mm}
+\includegraphics[width=0.50\textwidth]{images/led.jpg}
+\end{center}
+\end{columns}
+
+\footnotetext[1]{\tiny \url{https://learn.sparkfun.com/tutorials/diodes}}
+\footnotetext[2]{\tiny \url{https://learn.sparkfun.com/tutorials/polarity/diode-and-led-polarity}}
+
+## Diode Problems
+
+* Diodes don't limit current
+* Diodes aren't perfect (some current turned to heat)
+* Too much current = Too much heat = __BANG__
+* How do we limit current?
+
+## Resistor
+
+\begin{columns}[c]
+\column{0.50\textwidth}
+
+\begin{itemize}
+\item \emph{Resist} the flow of current
+\item Needed for LEDs: $\approx\SI{400}{\ohm}$\\
+(safe for $\le\SI{6}{\volt}$)
+\item Button Pull-up/down: $\ge\SI{10}{\kilo\ohm}$
+\item Color coded, Google it
+\end{itemize}
+\column{0.50\textwidth}
+
+\includegraphics[width=0.98\textwidth]{images/resistor.png}
+
+\end{columns}
+
+## Ohm's Law
+
+Ohm's Law relates current to potential and resistance.
+
+$$ V = IR $$
+$$ I=\frac{V}{R} $$
+$$ R = \frac{V}{I} $$
+
+* V = Potential in Volts (\si{\volt})
+* I = Current in Amperes (\si{\ampere})
+* R = Resistance in Ohms (\si{\ohm})
+
+## Ohm's Law: Example
+
+The datasheet for an LED says that the maximum continuous current is
+\SI{15}{\milli\ampere}. Your circuit operates at \SI{5}{\volt}\footnotemark[1]. How
+big should your resistor be?
+
+$$ \si{\ohm} = \frac{\SI{5}{\volt}}{\SI{0.015}{\ampere}} = 333.\overline{3}\si{\ohm} $$
+
+How much current for our *cheet sheet* value?
+
+$$ \si{\ampere} = \frac{\SI{5}{\volt}}{\SI{400}{\ohm}} = \SI{12.5}{\milli\ampere} $$
+
+\footnotetext[1]{\tiny Actually, this calculation is inaccurate. LEDs will have a *forward voltage drop* of between \SI{300}{\milli\volt} and \SI{700}{\milli\volt} this should be subtracted from \si{\volt} above... but it's not critical.}
+
+## Buttons
+
+- Buttons connect _or_ disconnect two wires/parts
+- Momentary Switch: Normally Closed (NC), Normally Open (NO) 
+- Toggle Switch
+
+## Digital Signals
+
+- Vcc: The power supply of the digital circuit elements
+- GND: The reference voltage (usually \SI{0}{\volt})
+- Connecting a part to Vcc = Logical 1
+- Connecting to GND = Logical 0
+
+## Transducers {.fragile}
+
+Transducers turn electrical energy into another sort of energy:
+
+| |
+-------|--------:
+Speaker|Electrical $\rightarrow$ Sound
+Microphone|Sound $\rightarrow$ Electrical
+LED|Electrical $\rightarrow$ Light
+LED|Light $\rightarrow$ Electrical
+Piezoelectric|Electrical $\rightarrow$ Motion
+
+## Piezo Buzzer
+
+- Piezoelectric elements change shape when voltage is applied
+- Thin discs can be made to oscillate and create sound.
+- Contains oscillator circuit
+- Two connections: Vcc, GND
+- Use a switch; connected = annoying tone, disconnected = glorious silence
+
+
+## Power
+
+The power supply provides the energy to drive the system *and* defines logical 1.
+
+Can be a:
+
+* Voltage Regulator (converts one potential to another)
+* Batteries (Lemon, NiMH, LiPo)
+* Solar Panel
+
+In our circuits, your laptop is converting it's power source to 5V and
+delivering power to our circuit via USB. You also have a battery pack
+for computer-free shenanigans.
+
+## $\mu$Controller
+
+Microcontroller ($\mu$C) is a *processor*, *memory* and a few *peripherals* on a standalone
+chip.
+
+Processor 
+:    is a group of transistors that understands a few dozen
+commands (ADD, SUB, JUMP..)
+
+Memory
+:    a circuit that can hold values.
+
+Peripherals
+:    Vary chip to chip, but often include timers, radios, communication interfaces
+
+Seems complicated, but really simple. They literally read a command
+(and data) from memory, then execute the command. At the end of the
+command, the next command is read from the next memory cell and the
+process is
+repeated^[some commands change the next command memory address]
+
+# Let's start programming
+
+## Configure Arduino
+
+\begin{center}
+\includegraphics[width=0.98\textwidth]{images/arduino-board.png}
+\end{center}
+
+* Board: Arduino UNO
+* Processor: ATmega328
+* Port: \ldots
+
+## The Code Environment
+
+\begin{center}
+\includegraphics[width=0.5\textwidth]{images/arduino-toolbar.png}
+\end{center}
+
+## Your first Program
+
+~~~ C
+/* the setup function runs once on reset / power */
+void setup() {
+  /* set pin 13 as an output */
+  pinMode(13, OUTPUT);
+}
+
+/* the loop function repeats forever */
+void loop() {
+  digitalWrite(13, HIGH);   // turn on LED
+  delay(1000);              // wait for a second
+  digitalWrite(13, LOW);    // turn the off LED
+  delay(1000);              // wait for a second
+}
+~~~
+
+## Buzzer: Hardware
+
+\begin{center}
+\includegraphics[width=0.98\textwidth]{images/buzzer-breadboard.png}
+\end{center}
+
+## Buzzer: Software
+
+~~~ C
+#define BUZZER 8       /* Make BUZZER same as pin 8 */
+
+void setup() {
+  pinMode(BUZZER, OUTPUT);
+  digitalWrite(BUZZER, HIGH);    /* Turn off buzzer */
+}
+void loop() {
+  digitalWrite(BUZZER, LOW);      /* Turn on buzzer */
+  delay(100);                     /* wait for 100ms */
+  digitalWrite(BUZZER, HIGH);    /* Turn off buzzer */
+  delay(900);                         /* wait 900ms */
+}
+~~~
+
+## Push Button: Hardware
+
+\begin{center}
+\includegraphics[width=0.98\textwidth]{images/buzzer-button-breadboard.png}
+\end{center}
+
+## Push Button: Software (Part 1)
+
+~~~ C
+#define BUTTON 7
+#define BUZZER 8
+
+int button_state = 0;
+
+void setup() {
+  pinMode(BUTTON, INPUT);
+  pinMode(BUZZER, OUTPUT);
+  digitalWrite(BUZZER, HIGH);
+}
+~~~
+
+## Push Button: Software (Part 2)
+
+~~~ C
+void loop() {
+  button_state = digitalRead(BUTTON);
+  if (button_state == HIGH) {
+    digitalWrite(BUZZER, LOW);
+  } else {
+    digitalWrite(BUZZER, HIGH);
+  }
+}
+~~~
+
+## The End?
+
+\begin{center}
+\LARGE{Questions?}
+\end{center}
diff --git a/presentations/workshop-may-2016/talk.pdf b/presentations/workshop-may-2016/talk.pdf
new file mode 100644
index 0000000..ebbd70d
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diff --git a/presentations/workshop-may-2016/talk.pdfpc b/presentations/workshop-may-2016/talk.pdfpc
new file mode 100644
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--- /dev/null
+++ b/presentations/workshop-may-2016/talk.pdfpc
@@ -0,0 +1,5 @@
+[file]
+talk.pdf
+[notes]
+### 1
+Testing 1,2,3
\ No newline at end of file
diff --git a/presentations/workshop-may-2016/template.tex b/presentations/workshop-may-2016/template.tex
new file mode 100644
index 0000000..74094e1
--- /dev/null
+++ b/presentations/workshop-may-2016/template.tex
@@ -0,0 +1,254 @@
+\documentclass[$if(fontsize)$$fontsize$,$endif$$if(lang)$$babel-lang$,$endif$$if(handout)$handout,$endif$$if(beamer)$ignorenonframetext,$endif$$for(classoption)$$classoption$$sep$,$endfor$]{$documentclass$}
+\setbeamertemplate{caption}[numbered]
+\setbeamertemplate{caption label separator}{: }
+\setbeamercolor{caption name}{fg=normal text.fg}
+\beamertemplatenavigationsymbols$if(navigation)$$navigation$$else$empty$endif$
+$if(fontfamily)$
+\usepackage[$for(fontfamilyoptions)$$fontfamilyoptions$$sep$,$endfor$]{$fontfamily$}
+$else$
+\usepackage{lmodern}
+$endif$
+\usepackage{amssymb,amsmath}
+\usepackage{ifxetex,ifluatex}
+\usepackage{wrapfig}
+\usepackage{siunitx}
+\usepackage{fixltx2e} % provides \textsubscript
+\ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex
+  \usepackage[$if(fontenc)$$fontenc$$else$T1$endif$]{fontenc}
+  \usepackage[utf8]{inputenc}
+$if(euro)$
+  \usepackage{eurosym}
+$endif$
+\else % if luatex or xelatex
+  \ifxetex
+    \usepackage{mathspec}
+  \else
+    \usepackage{fontspec}
+  \fi
+  \defaultfontfeatures{Ligatures=TeX,Scale=MatchLowercase}
+$if(euro)$
+  \newcommand{\euro}{€}
+$endif$
+$if(mainfont)$
+    \setmainfont[$for(mainfontoptions)$$mainfontoptions$$sep$,$endfor$]{$mainfont$}
+$endif$
+$if(sansfont)$
+    \setsansfont[$for(sansfontoptions)$$sansfontoptions$$sep$,$endfor$]{$sansfont$}
+$endif$
+$if(monofont)$
+    \setmonofont[Mapping=tex-ansi$if(monofontoptions)$,$for(monofontoptions)$$monofontoptions$$sep$,$endfor$$endif$]{$monofont$}
+$endif$
+$if(mathfont)$
+    \setmathfont(Digits,Latin,Greek)[$for(mathfontoptions)$$mathfontoptions$$sep$,$endfor$]{$mathfont$}
+$endif$
+$if(CJKmainfont)$
+    \usepackage{xeCJK}
+    \setCJKmainfont[$for(CJKoptions)$$CJKoptions$$sep$,$endfor$]{$CJKmainfont$}
+$endif$
+\fi
+$if(theme)$
+\usetheme{$theme$}
+$endif$
+$if(colortheme)$
+\usecolortheme{$colortheme$}
+$endif$
+$if(fonttheme)$
+\usefonttheme{$fonttheme$}
+$endif$
+$if(mainfont)$
+\usefonttheme{serif} % use mainfont rather than sansfont for slide text
+$endif$
+$if(innertheme)$
+\useinnertheme{$innertheme$}
+$endif$
+$if(outertheme)$
+\useoutertheme{$outertheme$}
+$endif$
+% use upquote if available, for straight quotes in verbatim environments
+\IfFileExists{upquote.sty}{\usepackage{upquote}}{}
+% use microtype if available
+\IfFileExists{microtype.sty}{%
+\usepackage{microtype}
+\UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
+}{}
+$if(lang)$
+\ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex
+  \usepackage[shorthands=off,$for(babel-otherlangs)$$babel-otherlangs$,$endfor$main=$babel-lang$]{babel}
+$if(babel-newcommands)$
+  $babel-newcommands$
+$endif$
+\else
+  \usepackage{polyglossia}
+  \setmainlanguage[$polyglossia-lang.options$]{$polyglossia-lang.name$}
+$for(polyglossia-otherlangs)$
+  \setotherlanguage[$polyglossia-otherlangs.options$]{$polyglossia-otherlangs.name$}
+$endfor$
+\fi
+$endif$
+\newif\ifbibliography
+$if(natbib)$
+\usepackage{natbib}
+\bibliographystyle{$if(biblio-style)$$biblio-style$$else$plainnat$endif$}
+$endif$
+$if(biblatex)$
+\usepackage$if(biblio-style)$[style=$biblio-style$]$endif${biblatex}
+$if(biblatexoptions)$\ExecuteBibliographyOptions{$for(biblatexoptions)$$biblatexoptions$$sep$,$endfor$}$endif$
+$for(bibliography)$
+\addbibresource{$bibliography$}
+$endfor$
+$endif$
+$if(listings)$
+\usepackage{listings}
+$endif$
+$if(lhs)$
+\lstnewenvironment{code}{\lstset{language=Haskell,basicstyle=\small\ttfamily}}{}
+$endif$
+$if(highlighting-macros)$
+$highlighting-macros$
+$endif$
+$if(verbatim-in-note)$
+\usepackage{fancyvrb}
+\VerbatimFootnotes % allows verbatim text in footnotes
+$endif$
+$if(tables)$
+\usepackage{longtable,booktabs}
+\usepackage{caption}
+% These lines are needed to make table captions work with longtable:
+\makeatletter
+\def\fnum@table{\tablename~\thetable}
+\makeatother
+$endif$
+$if(graphics)$
+\usepackage{graphicx,grffile}
+\makeatletter
+\def\maxwidth{\ifdim\Gin@nat@width>\linewidth\linewidth\else\Gin@nat@width\fi}
+\def\maxheight{\ifdim\Gin@nat@height>\textheight0.8\textheight\else\Gin@nat@height\fi}
+\makeatother
+% Scale images if necessary, so that they will not overflow the page
+% margins by default, and it is still possible to overwrite the defaults
+% using explicit options in \includegraphics[width, height, ...]{}
+\setkeys{Gin}{width=\maxwidth,height=\maxheight,keepaspectratio}
+$endif$
+
+% Prevent slide breaks in the middle of a paragraph:
+\widowpenalties 1 10000
+\raggedbottom
+
+$if(section-titles)$
+\AtBeginPart{
+  \let\insertpartnumber\relax
+  \let\partname\relax
+  \frame{\partpage}
+}
+\AtBeginSection{
+  \ifbibliography
+  \else
+    \let\insertsectionnumber\relax
+    \let\sectionname\relax
+    \frame{\sectionpage}
+  \fi
+}
+\AtBeginSubsection{
+  \let\insertsubsectionnumber\relax
+  \let\subsectionname\relax
+  \frame{\subsectionpage}
+}
+$endif$
+
+$if(links-as-notes)$
+% Make links footnotes instead of hotlinks:
+\renewcommand{\href}[2]{#2\footnote{\url{#1}}}
+$endif$
+$if(strikeout)$
+\usepackage[normalem]{ulem}
+% avoid problems with \sout in headers with hyperref:
+\pdfstringdefDisableCommands{\renewcommand{\sout}{}}
+$endif$
+\setlength{\emergencystretch}{3em}  % prevent overfull lines
+\providecommand{\tightlist}{%
+  \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
+$if(numbersections)$
+\setcounter{secnumdepth}{5}
+$else$
+\setcounter{secnumdepth}{0}
+$endif$
+$if(dir)$
+\ifxetex
+  % load bidi as late as possible as it modifies e.g. graphicx
+  $if(latex-dir-rtl)$
+  \usepackage[RTLdocument]{bidi}
+  $else$
+  \usepackage{bidi}
+  $endif$
+\fi
+\ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex
+  \TeXXeTstate=1
+  \newcommand{\RL}[1]{\beginR #1\endR}
+  \newcommand{\LR}[1]{\beginL #1\endL}
+  \newenvironment{RTL}{\beginR}{\endR}
+  \newenvironment{LTR}{\beginL}{\endL}
+\fi
+$endif$
+$for(header-includes)$
+$header-includes$
+$endfor$
+
+$if(title)$
+\title{$title$}
+$endif$
+$if(subtitle)$
+\subtitle{$subtitle$}
+$endif$
+$if(author)$
+\author{$for(author)$$author$$sep$ \and $endfor$}
+$endif$
+$if(institute)$
+\institute{$for(institute)$$institute$$sep$ \and $endfor$}
+$endif$
+\date{$date$}
+
+\begin{document}
+$if(title)$
+\frame{\titlepage}
+$endif$
+
+$for(include-before)$
+$include-before$
+
+$endfor$
+$if(toc)$
+\begin{frame}
+\tableofcontents[hideallsubsections]
+\end{frame}
+
+$endif$
+$body$
+
+$if(natbib)$
+$if(bibliography)$
+$if(biblio-title)$
+$if(book-class)$
+\renewcommand\bibname{$biblio-title$}
+$else$
+\renewcommand\refname{$biblio-title$}
+$endif$
+$endif$
+\begin{frame}[allowframebreaks]{$biblio-title$}
+\bibliographytrue
+\bibliography{$for(bibliography)$$bibliography$$sep$,$endfor$}
+\end{frame}
+
+$endif$
+$endif$
+$if(biblatex)$
+\begin{frame}[allowframebreaks]{$biblio-title$}
+\bibliographytrue
+\printbibliography[heading=none]
+\end{frame}
+
+$endif$
+$for(include-after)$
+$include-after$
+
+$endfor$
+\end{document}