544 lines
15 KiB
TeX
544 lines
15 KiB
TeX
\documentclass[12pt,trans]{beamer}
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\usepackage{color}
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\usepackage{url}
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\usepackage{colortbl}
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%\usepackage{soul}
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%\usepackage{verbatim}
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\usefonttheme{structurebold}
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\setbeamertemplate{navigation symbols}{}
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\setbeamertemplate{items}[ball]
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%\setbeamersize{sidebar width left=-5mm}
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\title{\Large Making Hardware \\ with KiCad and Friends}
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\author{Werner Almesberger \\\url{werner@almesberger.net}}
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\date{July 27, 2012}
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%\setul{}{1.5pt}
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\begin{document}
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\begin{frame}
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\titlepage
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\end{frame}
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% --- Overview ----------------------------------------------------------------
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\begin{frame}{Overview}
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\begin{itemize}
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\item KiCad introduction
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\item Collaborative design in Qi-Hardware
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\item Tools to improve KiCad
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\item Workflow overview
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\end{itemize}
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\vskip5mm
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{\small \url{downloads.qi-hardware.com/people/werner/fisl13.pdf}}
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\end{frame}
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% --- KiCad Introduction ------------------------------------------------------
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\begin{frame}{KiCad}
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\begin{itemize}
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\item Complete EDA solution
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\item Free Software: GPL, LGPL
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\item Development team by Jean-Pierre Charras, \\
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Dick Hollenbeck, and many others
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\item C++, wxWidgets
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\item Multi-platform: Linux, Windows, Mac
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\item Text files $\rightarrow$ extensible
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\end{itemize}
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\vskip5mm
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{\small \url{www.kicad-pcb.org}}
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\end{frame}
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% --- Schematics --------------------------------------------------------------
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\begin{frame}{KiCad: Schematics}
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\begin{center}
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\includegraphics[width=1.0\textwidth]{schem.pdf}
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\end{center}
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\end{frame}
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% --- Footprints --------------------------------------------------------------
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\begin{frame}{KiCad: Footprints}
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\begin{center}
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\includegraphics[width=1.0\textwidth]{assoc.pdf}
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\end{center}
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\end{frame}
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% --- Layout ------------------------------------------------------------------
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\begin{frame}{KiCad: Layout}
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\begin{center}
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\includegraphics[width=1.0\textwidth]{layout.pdf}
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\end{center}
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\end{frame}
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% --- Qi-Hardware -------------------------------------------------------------
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\begin{frame}{Qi-Hardware}
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Structure and goals:
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\begin{itemize}
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\item Collection of loosely connected projects
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\item Informal gathering of like-minded developers
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\item Copyleft Hardware with Free Software
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\item Development and manufacturing
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\item Toolmaking
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\end{itemize}
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Products:
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\begin{itemize}
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\item Ben NanoNote (Handheld computer)
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\item Ben-WPAN (IEEE 802.15.4 wireless)
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\item Milkymist One (FPGA-based Video synthesizer)
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\end{itemize}
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\vskip2mm
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{\small \url{www.qi-hardware.com}}
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\end{frame}
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% --- Collaborative Design ----------------------------------------------------
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\begin{frame}{Collaborative Design}
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\begin{itemize}
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\item Follow other people's work
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\item Review other people's work (projects and libraries)
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\item Shared design information
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\item Shared version control (git)
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\item Shared procedures and rules
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\end{itemize}
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\end{frame}
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% --- KiCad Limitations -------------------------------------------------------
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\begin{frame}{KiCad Limitations}
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\begin{itemize}
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\item No integrated version control system support
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\item Integration leads to weak peripheral tools
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\begin{itemize}
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\item Footprint editor
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\item Component catalog
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\item Module catalog
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\end{itemize}
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\item No scripting (coming)
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\item Scattered libraries
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\end{itemize}
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\end{frame}
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% --- Qi-Hardware Adaptation --------------------------------------------------
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\begin{frame}{Qi-Hardware Adaptation}
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\begin{itemize}
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\item Keep things simple: only Linux
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\item Command-line-oriented use
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\item Extend KiCad with patches
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\item External scripts/programs
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\item Own component and module libraries with common rules
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\end{itemize}
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\end{frame}
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% --- Libraries ---------------------------------------------------------------
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\begin{frame}{Libraries}
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Goals:
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\begin{itemize}
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\item Consistent naming
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\item Known origin of design information \\
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E.g., IPC-7351
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\item Documented development process
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\end{itemize}
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To do:
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\begin{itemize}
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\item Improve organization
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\item Better integrate background information
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\item Reviews !
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\end{itemize}
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\vskip4mm
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% URL http://projects.qi-hardware.com/index.php/p/kicad-libs/source/tree/master/components/
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{\small \url{tiny.cc/kicad-libs-components}} \\
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% URL http://projects.qi-hardware.com/index.php/p/kicad-libs/source/tree/master/modules/
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{\small \url{tiny.cc/kicad-libs-modules}}
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\end{frame}
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% --- What goes into git ------------------------------------------------------
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\begin{frame}{What goes into git}
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KiCad:
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\begin{itemize}
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\item Project file: {\tt {\em project}.{\color{red}pro}}
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\item Schematics: {\tt {\em project}.{\color{red}sch}},
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{\tt {\em subsheet}.{\color{red}sch}}
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\item Footprint mapping: {\tt {\em project}.{\color{red}cmp}}
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\item Layout: {\tt {\em project}.{\color{red}brd}}
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\end{itemize}
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Qi-Hardware:
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\begin{itemize}
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\item Makefile ({\tt sch}, {\tt brd}, {\tt fab}, {\tt clean})
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\item Bookshelf (for dsv)
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\item Project-local libraries
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\end{itemize}
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\end{frame}
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% --- What doesn't ------------------------------------------------------------
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\begin{frame}{What doesn't}
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\begin{itemize}
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\item Netlist: {\tt {\em project}.{\color{red}net}} \\
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Generated with eeschema from
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{\tt *.{\color{red}sch}}
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and
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{\tt {\em project}.{\color{red}cmp}}
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\item Caches and backups:
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{\tt {\em sheet}.{\color{red}bak}},
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{\tt {\em project}.{\color{red}000}},
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{\tt {\em project}{\color{red}-cache.lib}}
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\item Postscript:
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{\tt {\em project}-{\em sheet}.{\color{red}ps}},
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{\tt {\em project}-{\em layer}.{\color{red}ps}}
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\item Gerbers:
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{\tt {\em project}-{\em layer}.{\color{red}g{\em ??}}}
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\item BOMs: {\tt {\em project}.{\color{red}lst}},
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{\tt {\em project}.{\color{red}cvs}}
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\item Fab outputs: {\tt {\em project}.{\color{red}drl}},
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{\tt {\em project}.{\color{red}pos}}
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\item And so on: {\tt {\em project}.{\color{red}cad}},
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{\tt {\em project}.{\color{red}erc}},
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{\tt {\em project}.{\color{red}dsn}},
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{\tt {\em project}.{\color{red}rpt}},
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{\tt {\em project}.{\color{red}wrl}}, $\ldots$
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\end{itemize}
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\end{frame}
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% --- Project File ------------------------------------------------------------
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\begin{frame}{Project File ({\tt {\em project}.pro})}
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Contains:
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\begin{itemize}
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\item Project settings
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\item Lists of libraries
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\end{itemize}
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Issues:
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\begin{itemize}
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\item Local absolute paths
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\item Default libraries
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\item Timestamps $\rightarrow$ commit noise
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\end{itemize}
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Solution:
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\begin{itemize}
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\item Maintain paths manually
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\item {\tt purge} script: \\
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% URL http://projects.qi-hw.com/index.phpp/wernermisc/source/tree/master/bin/purge
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{\small \url{tiny.cc/wernermisc-bin-purge}}
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\end{itemize}
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\end{frame}
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% --- Makefile ----------------------------------------------------------------
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\begin{frame}[fragile]{Makefile}
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Objectives:
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\begin{itemize}
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\item Convenience shortcuts
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\item Combine tools
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\item Share common procedures
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\item Avoid mistakes
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\end{itemize}
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{\small
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\begin{verbatim}
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front:
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pcbnew --plot=ps --plot-fill-all-zones \
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--layers=Front --plot-mirror \
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$(PROJECT).brd
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lpr $(PROJECT)-Front.ps
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\end{verbatim}
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}
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\end{frame}
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% --- KiCad Command-Line Patches ----------------------------------------------
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\begin{frame}{KiCad Command-Line Patches}
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Original hack by Werner Almesberger, clean rewrite by Wolfgang Spraul,
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soon rewrite for scripting.
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\begin{itemize}
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\item Idea: command-line access to main output functions
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\item eeschema
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\begin{itemize}
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\item Visualization: Postscript (and SVG, DXF)
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\item BOM $\rightarrow$ BOOM
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\item Netlist, ERC
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\end{itemize}
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\item pcbnew
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\begin{itemize}
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\item Fabrication: Gerbers, drill (Excellon), component positions
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\item Visualization and DIY: Postscript
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\item Attributes: mirror, size, origin, fill zones, $\ldots$
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\end{itemize}
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\end{itemize}
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\vskip5mm
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% URL http://projects.qi-hardware.com/index.php/p/eda-tools/source/tree/master/kicad-patches/
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{\small \url{tiny.cc/eda-tools-kicad-patches}}
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\end{frame}
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% --- Data Sheet Viewer (dsv) -------------------------------------------------
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\begin{frame}[fragile]{Data Sheet Viewer (dsv)}
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\begin{itemize}
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\item Bookshelf: name and aliases $\rightarrow$ PDF or ZIP with PDF
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\item Download (wget) to local cache
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\item Hierarchical lookup by name or alias
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\item Example: \\
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{\tt dsv avr} $\rightarrow$ ATtiny87 ({\tt doc8265.pdf})
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$\rightarrow$ xpdf
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\end{itemize}
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\vskip5mm
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Bookshelf example:
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\begin{verbatim}
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N: attiny87
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A: attiny167
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A: avr
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D: http://www.atmel.com/Images/doc8265.pdf
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\end{verbatim}
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\end{frame}
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% --- Data Sheet Viewer (dsv) -------------------------------------------------
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\begin{frame}{dsv Motivation}
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\begin{itemize}
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\item Make sure everybody uses the same data sheet
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\begin{itemize}
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\item Same component
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\item Same manufacturer
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\item Same data sheet revision
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\end{itemize}
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\item Copyright: can't just check in PDF
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\item Industrial pragmatism: private mail or ``internal'' repository
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\item Qi-Hardware: share {\tt BOOKSHELF}
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\end{itemize}
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\vskip10mm
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% URL http://projects.qi-hardware.com/index.php/p/eda-tools/source/tree/master/dsv/
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{\small \url{tiny.cc/eda-tools-dsv}}
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\end{frame}
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% --- Schematics Symbol Catalog ----------------------------------------------
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\begin{frame}{Schematics Symbol Catalog}
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\begin{itemize}
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\item For selection, review
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\item Hierarchical order with alphabetical index
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\item Short descriptions and data sheet links \\
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To do: connect to dsv
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\item Added value: indicate pin types
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\end{itemize}
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\begin{center}
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\includegraphics[width=1.0\textwidth]{cat-comp.pdf}
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\end{center}
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\end{frame}
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% --- Schematics History ------------------------------------------------------
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\begin{frame}{Schematics History}
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\begin{itemize}
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\item Schematics revision history
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\item {\tt git diff} produces gibberish
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\end{itemize}
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\begin{center}
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\includegraphics[height=4.5cm]{../fisl2011/schhist.png}
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\qquad
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\includegraphics[height=4cm]{../fisl2011/USB.png}
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\end{center}
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{\small \url{projects.qi-hardware.com/schhist/}}
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\end{frame}
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% --- Schematics History (cont'd) ---------------------------------------------
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\begin{frame}{Schematics History (cont'd)}
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How it works:
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\begin{itemize}
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\item Walk git revision history
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\item Check out project whenever schematics change
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\item Run eeschema to make Postscript
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\item Convert to PNG (find diffs, with highlighting) and PDF
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\item Wrap in HTML
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\end{itemize}
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%Issues:
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%\begin{itemize}
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% \item Nasty shell script
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% \item Resource-hungry (partial caching)
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% \item Large schematics get confusing
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% \item Projects spanning multiple repositories
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%\end{itemize}
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\vskip5mm
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% URL http://projects.qi-hardware.com/index.php/p/eda-tools/source/tree/master/schhist/
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{\small \url{tiny.cc/eda-tools-schhist}}
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\end{frame}
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% --- Fped --------------------------------------------------------------------
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\begin{frame}{Footprint Editor (fped)}
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\begin{center}
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\includegraphics[height=45mm]{../fisl2011/fped.png}
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\end{center}
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\begin{itemize}
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\item Fully parametric
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\item Automated repetition (loops, tables, sub-frames)
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\item GUI or text-based
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\item Automatic measurements
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\item Output: KiCad, Postscript, Gnuplot
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\end{itemize}
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\end{frame}
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% --- Footprint Catalog ------------------------------------------------------
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\begin{frame}{Footprint Catalog}
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\begin{itemize}
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\item Like schematics symbol catalog, but for footprints
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\item Added value: measurements, pad types
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\end{itemize}
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\begin{center}
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\includegraphics[width=1.0\textwidth]{cat-mod.pdf}
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\end{center}
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% URL http://projects.qi-hardware.com/index.php/p/eda-tools/source/tree/master/genkicat/
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{\small \url{tiny.cc/eda-tools-genkicat}}
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\end{frame}
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% --- Layout History ----------------------------------------------------------
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\begin{frame}{Layout History}
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\begin{itemize}
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\item Layout revision history
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\item To do $\ldots$
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\end{itemize}
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\vskip5cm
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%% URL http://projects.qi-hardware.com/index.php/p/eda-tools/source/tree/master/brdhist/
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% {\small \url{tiny.cc/eda-tools-brdhist}}
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\end{frame}
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% --- Gerber Renderer ---------------------------------------------------------
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\begin{frame}{Gerber Renderer (prettygerbv)}
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\begin{columns}
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\begin{column}[l]{8.5cm}
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\begin{itemize}
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\item ``Photorealistic'' view of PCB
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\item Combines Gerber (traces, drawings) and Excellon (holes)
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\item Easy to see issues with solder paste, silk screen,
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solder mask, $\ldots$
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\item Uses gerbv for rendering
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\end{itemize}
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\vskip10mm
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% URL http://projects.qi-hardware.com/index.php/p/eda-tools/source/tree/master/fab/prettygerbv/
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{\small \url{tiny.cc/eda-tools-fab-prettygerbv}}
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% MORE ??
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% URL http://projects.qi-hardware.com/index.php/p/eda-tools/source/tree/master/fab/
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{\small \url{tiny.cc/eda-tools-fab}}
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\end{column}
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\begin{column}[r]{4cm}
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\includegraphics[width=3cm]{../fisl2011/atusb-front.png}
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\end{column}
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\end{columns}
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\end{frame}
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% --- BOM Processor -----------------------------------------------------------
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\begin{frame}{BOM Processor (BOOM)}
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\begin{itemize}
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\item BOM $\rightarrow$ select components $\rightarrow$ find supplier
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$\rightarrow$ \\
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shopping list
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\begin{itemize}
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\item Decode product numbers
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\item Match characteristics (manufacturer part)
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\item Find part in inventories (distributor part)
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\item Select best price
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\end{itemize}
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\item Work in progress. Rewrite from Perl to C.
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% \item Snag: Digi-Key spider no longer works
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\item Future: Help with component selection
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\end{itemize}
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\vskip3mm
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% URL http://projects.qi-hardware.com/index.php/p/eda-tools/source/tree/master/b2/
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{\small \url{tiny.cc/eda-tools-b2}}
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\end{frame}
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% --- BOOM Data Flow ----------------------------------------------------------
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%\begin{frame}{BOOM Data Flow}
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%DRAWING
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%\end{frame}
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% --- Schematics Design Rules -------------------------------------------------
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\begin{frame}{Schematics Design Rules}
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Work in progress. First compilation by Adam Wang.
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\begin{itemize}
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\item Clean visual representation
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\item Compatibility with post-processors (e.g., BOOM)
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\end{itemize}
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Examples:
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\begin{itemize}
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\item Value naming (4k7, 10nH, $\ldots$)
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\item Junction style
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\item Naming of negated pins (e.g., nRESET)
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\item Text placement and size
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\item Checklists for reviews
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\end{itemize}
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{\small \url{en.qi-hardware.com/wiki/Rules_on_Editing_Schematics}}
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\end{frame}
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% --- Qi-Hardware Workflow ----------------------------------------------------
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\begin{frame}{Qi-Hardware Workflow}
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\begin{center}
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\includegraphics[width=1.0\textwidth]{all.pdf}
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\end{center}
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\end{frame}
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% --- Conclusion --------------------------------------------------------------
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\begin{frame}{Conclusion}
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Experience this far:
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\begin{itemize}
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\item KiCad is a good basis for collaborative projects
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\item Easy to extend, thanks to open design
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\item Automation makes workflow less intimidating
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\end{itemize}
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To do:
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\begin{itemize}
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\item Spread the word
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\item Finish BOOM and write brdhist
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\item Unify meta-data (bookshelf, etc.)
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\item Improve quality of libraries
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\item Command-line support in mainline KiCad
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\end{itemize}
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\vskip2mm
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{\small \url{projects.qi-hardware.com/}} \\
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{\small \url{downloads.qi-hardware.com/people/werner/fisl13.pdf}}
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\end{frame}
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\end{document}
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