Re: gEDA-user: Re: Design changs required to mill PCBs?

[John Griessen <john_g@xxxxxxxxxx>]

Since engineering is just the balancing of cost and performance,
another way to look at this problem is to see that many many power supplies can 
be made with one layer plus ground plane boards -- 2 layer,
and RF boards need 4 or six layers,
and the rest need one layer,
and slant your design choices towards one layer.

I found how to import flat flex cable connectors
with 20 conductors for $0.50 in low quantities, (300), and they can be $0.20 in 
larger bus-as-usual quantities like 10K, and they open up connecting multiple 
small boards cheaply.  So for my sensor network product plans, I'm using them to 
go between RF section and micro and A2D DAC and any other app-specific modules.

John G

DJ Delorie wrote:

> Yeah, I'm just drooling.  I'm a tool junkie.
>
> >  It makes $33, http://www.33each.com , look cheap 

 the winners so far for 4 layer
> are (for 20 in2 m/s):
>
> qty1 : pcbpool $104 ea (6mil/12drill)
> qty3 : protoexpress $153/3 (6/15)
> qty5 : pcbex $158/5 (7/15)


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