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

[Steven Michalske <smichalske@xxxxxxxxx>]

nice board,

Why did you connect the vias attach to the planes with thermals  
instead of a solid "thermal" connection?

Steve
On Oct 30, 2008, at 10:26 PM, DJ Delorie wrote:

>
> 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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