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KiCadWorkshop_en.md

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SCHEDULE

  • Introduction
  • svg2shenzen & KiCad presentation
  • Demos
  • Individual lunch
  • Make your onw

ABOUT ME

  • Tillo
  • @morgulbrut on the twitters
  • Electronics Engineer by day
  • Dev-board hoarder by night

PCB ART

  • done a long time by various folks
  • boomed in recent years as #badgelife
  • badges for hacker cons

PCB ART

\begin{figure} \centering \only<1> {% \includegraphics[width=.8\textwidth]{images/Micronoise.png}% }% \only<2> {% \includegraphics[width=.8\textwidth]{images/viking-badge.jpg}% }% \only<3> {% \includegraphics[width=.8\textwidth]{images/Jogjarmageddon.jpg}% }% \only<4> {% \includegraphics[width=.8\textwidth]{images/queercon.jpg}% }% \end{figure}

SHITTY ADD-ON

  • addon for badges, originally for DEF CON
  • easy entry to PCB art
  • MZ badge will have some connectors too

SOME SHITTY ADD-ONS

SAO 1.69BIS

  • 3V3 and GND
  • I²C
  • Two GPIO
  • Max power 1.1 millihorsepower (250mA @ 3.3V)
  • Serial Port on one of the badge

TOOLS WE WILL USE

  • Inkscape
  • svg2shenzen
  • KiCad

INKSCAPE

  • Vectorgraphics editor
  • FOSS

SVG2SHENZEN

  • An inkscape plugin for PCB art.
  • Layer "-disable" disables that Layer.
  • The stuff you want to have in your design needs to be "dark".
  • made by Budi from Indonesia
  • @manticore_ on the twitters
  • badgeek on github

KICAD

KICAD

  • EDA (Electronics Design Automation Suite)
  • FOSS (mostly GPL)
  • Used to be pretty bad in the past
  • Now: developed at CERN

EDA WORKFLOW

  • Draw schematics
  • Annotate schematics (in KiCad also: assign footprints to symbol)
  • Layout
  • Generate data

SCHEMATICS EDITOR

DRAW SCHEMATICS

  • Place symbols and connect them.
  • Make new components if needed.

MAKE COMPONENTS

  • Symbol
  • Footprint
  • Add 3d model(s) to a footprint (if wanted)

ANNOTATE SYMBOLS

  • Automatically number the components.
  • Manually assign footprints to symbols.

SCHEMATIC TO LAYOUT

  • Before KiCAD 5 it was needed to generate a netlist and load it into the layout.
  • KiCAD 5 can do it in one step.

LAYOUT EDITOR

LAYOUT HINTS

  • Always start with diff pairs.
  • Route mainly horizontal on one layer and mainly vertical on another.
  • Tented vias: Some say do it, some say don't. I don't really know.

LAYERSTACK

  • 2 layer: parts & routing & GND, routing & GND or VCC
  • 4 layer: parts & routing(& GND), GND, VCC, GND & routing

ROUTE

  • Angles should be bigger than 90°. Using a 45° raster is recommended.
  • Make polygons if possible
  • .5 mm - .3 mm are etchable in your homelab
  • Vias are a pain if you etch the prints yourself

CURVED TRACES

  • A KiCad Plugin which makes curves traces
  • Adds that hand drawn touch
  • Route first, run the plugin, get a new layout.

GENERATE GERBERS

  • Check if every layer you need is in the output.
  • Check the gerbers after generating them.

KITSPACE.ORG

  • Sharing is caring
  • Upload gerbers and BOM
  • Connects to github
  • Made by Kaspar
  • kasbah on github

FILES

github.com/morgulbrut/kicadWorkshop Branch: SAO-Workshop

  • Slides
  • Documentation
  • Example project