* [[http://elecrom.wordpress.com/2009/10/09/eagle-library-list-of-most-commonly-used-electronics-components/|Commonly used components]]
  * [[http://electronics.stackexchange.com/questions/128293/hide-particular-airwires-nets-in-eagle|hiding airwires]]
  * [[http://web.mit.edu/xavid/arch/i386_rhel4/help/82.htm|rotate arbitary degree]]
  * to create a BOM type run bom.ulp in the schematic editor
  * [[https://learn.sparkfun.com/tutorials/using-eagle-board-layout/layers-overview|Eagle layers defined]]
  * [[http://dangerousprototypes.com/2012/08/08/how-to-eagle-keepout-and-restrict-layers/|keepout and restrict layers]]
  * [[http://www.pcbway.com/blog/PCB_Layout_Software/How_to_generate_Gerbers_from_Eagle_files.html|gerber file extensions]]
  * [[https://www.sparkfun.com/tutorials/110|making a library]]\\


Creating a (not necessarily) GND plane (from [[https://learn.sparkfun.com/tutorials/using-eagle-board-layout|The Sparkfun Board Tutorial]]):

  - polygon
  - isolate 0.012
  - set width to width of traces to connect to ground (0.024?)
  - draw polygon using grid to make sure things line up
  - choose "name" tool and click in middle of polygon. Name it GND or whatever
  - ratsnest

Preparing for a DIY milling machine:

  * use script from [[http://pcbgcode.org/read.php?12,941|PCB GCode]]

Generating for a board house:


generating pick and place (centroid) file. Two versions of this file. From board type "run " then either:
  * mountsmd.ulp
  * centroid-screamingcircuits-smd.ulp (preferred by pcbway?)


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