This page exists so that I can post random notes, ideas, and other pages related to the open source PCB layout editor and gEDA schematic capture programs.
Looking for gEDA for Windows?
Blue Sky Ideas
gcc -I$HOME/geda/pcb-build/src -I$HOME/geda/pcb-build -O2 -shared plugin.c -o plugin.so
Lesstif HID Sample
The new PS exporter supports a "bloat" setting where you can compensate for any inaccuracies in the thickness of traces and pads, either because of your printer or your etching process. Positive bloat values make traces and pads slightly thicker, negative values make them slightly thinner. You can download a sample circuit board (looks like this, also gerber and pdf) that has traces of various widths and spacings to help you calibrate your process. Simply print and etch the sample board, and inspect it. The top half has line/space patterns with various bloat settings (-150..150), just find the row that is actually correct (line width same as space width), and use that bloat setting. The bottom half shows different trace widths on various grids so you can judge how well your process handles tiny details. There's also a set of pins for drill sizes 50..80 with 5, 10, 15, and 20 mil annuli.
There's an EPS exporter now, that can be used to create illustrations for documentation, and for converting board layers (manually) to other bitmap formats with ghostview.
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