Design and print your own geek clock with LaTeX and TikZ

Would you like to have your custom clock for geeks (geek clock, math clock)? You can
design and print the front plate of your own analog geek clock using LaTeX and TikZ. Here is how I did it (download):

% geek_clock.tex
% by pts@fazekas.hu at Thu Oct 22 14:24:35 CEST 2009
\documentclass[a4paper]{article}
\usepackage{tikz}
\usepackage[latin2]{inputenc}
\usepackage{t1enc}
\usepackage{lmodern}

\pdfpagewidth=\paperwidth
\pdfpageheight=\paperheight

\newenvironment{fullpage}{%
  \shipout\vbox\bgroup\kern-1in\moveleft1in\vbox to\paperheight\bgroup
  \parindent0pt\hsize\paperwidth
}{%
  \vfil\egroup\egroup
}

\begin{document}

% Define a few constants for easy configuration
\def\framehalf{9.2cm}
\def\radius{8.8cm}
\def\onedegrad{8.6cm}
\def\fivedegrad{8.5cm}
\def\tendegrad{8.2cm}
\def\labelrad{8.3cm}

\begin{fullpage}
  \vfil\noindent\hfil
  \begin{tikzpicture}[scale=1]
    \draw (-\framehalf,-\framehalf) --
          (\framehalf,-\framehalf) --
          (\framehalf,\framehalf) --
          (-\framehalf,\framehalf) -- cycle;
    \draw (0,0) circle (\framehalf);
    \draw (0,0) circle (\radius);
    \draw[fill=black] (0,0) circle (2.5mm);
    \node[draw, circle, inner sep=.2mm] (a) at (0,0) {};
    % main lines
    \foreach \x in {0, 6,...,360}
        \draw[line width=1.5pt] (\x:\onedegrad) -- (\x:\radius);
    % labels and longer lines at every 6 degrees
    \foreach \x in {30, 60, ...,  360} {
        \draw[line width=4pt] (\x:\tendegrad) -- (\x:\radius);
    }
    \node[scale=3,anchor=north east] at (450-1*30:\labelrad)
      {$B'_L$\kern-1ex};
    \node[scale=2.5,anchor=east] at (450-2*30:\labelrad)
      {\lower8ex\hbox{$\displaystyle \sum_{i=0}^{\infty}1/2^i$\kern-2ex}};
    \node[scale=3,anchor=east] at (450-3*30:\labelrad)
      {$7\odot-5$};
    \node[scale=3,anchor=south east] at (450-4*30:\labelrad)
      {$\lceil\pi\rceil$};
    \node[scale=3,anchor=south east] at (450-5*30:\labelrad)
      {$(2\varphi-1)^2$\kern-4ex};
    \node[scale=3,anchor=south] at (450-6*30:\labelrad)
      {$3!$};
    \node[scale=3,anchor=south west] at (450-7*30:\labelrad)
      {$\!6.\overline{9}$};
    \node[scale=4,anchor=west] at (450-8*30:\labelrad)
      {\raise1ex\hbox{${\bullet}{\circ}{\circ}{\circ}$}};
    \node[scale=2.5,anchor=west] at (450-9*30:\labelrad)
      {$\lfloor(7\cdot.1\!-\!.7)^{\textrm{-6e-2}}\rfloor$};
    \node[scale=2.5,anchor=west] at (450-10*30:\labelrad)
      {\lower6ex\hbox{$\displaystyle{5\choose2}$}};
    \node[scale=2.5,anchor=north west] at (450-11*30:\labelrad)
      {\lower3ex\hbox{\kern-3ex$7^5\mathop{\mathrm{mod}} 13$}};
    \node[scale=3,anchor=north] at (450-12*30:\labelrad)
      {$\sqrt[3]{1728}$};
  \end{tikzpicture}
\end{fullpage}

\end{document}

I used pdflatex and TikZ in TeX Live 2008 to compile the file above to a PDF file, which I printed, cut and glued to a stock clock.

The PDF version of the clock face is available here. It looks like this:

References:

• Original math clock product page, out of stock right now.
• Explanation for the formulas on the original math clock
• Forum thread giving an example how to draw an analog clock in TikZ