gEDA-user: powermeter board, with less ground planes :-)

[DJ Delorie <dj@xxxxxxxxxxx>]

http://www.delorie.com/electronics/powermeter/

I merged the three ground planes into one, and draw AVdd from DVdd for
each chip, with a 10R/10uF power filter.

There's still a big hole in the ground "plane" where the Vdd plane
goes, as well as all the digital signals to each chip.  There's a
bunch of bypass caps across the boundary between the ground and power
planes; six 10u scattered plus 0.1u at each chip.

All the digital signals have series resistors on them to slow down the
edges, except for reset which doesn't change once the board is
running.

Better?  (or at least, good enough? ;)

495 parts so far!  367 holes, 290 of which are vias.



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