ComputerVoltageSources

It is 4x6 so it is too big for this service.  It needs to be even 
larger.  I couldn't fit the MIDI components, I have 1/8 watt 
resistors UNDER the AtomPro28 part in the interior of the socket, my 
I2C protection changes use 1/8 watt resistors, and there is no room 
for the 8 input filter capacitors so those are piggybacked on the 
feedback resistors.  I also believe the SMT DACs should be changed 
to SMT/DIP combination and there is no way to do this in an overlay 
so that is a couple of additional components.  I would guess you'd 
want to add 1 - 2" in each direction to spread things out a bit so 
I'd start with a board size of 5 x 7 to 6 x 8.

I paid $120 for two quicks with no solder mask.  I know the price 
for solder mask has the $233 setup charge plus the charge per board.

As to the runs, I'll have to look but I think they are 10 mil runs 
with 12 mil clearance and no solder mask. For reference, that is 
half the spacing of the SMT pads. I'll try and upload some 1:1 
photos of the clearance this weekend.

I'm also not happy with the ground planes.  They aren't connected 
the way they should be and I can't get the software to do what I 
want. The board needs to be redone.

Dave

--- In ComputerVoltageSources@yahoogroups.com, "Larry T." 
<larry@...> wrote:
>
> Dave, and others that may be interested.  ExpressPCB offers 
ProtoPro
> service.  This is 4 boards for $179.00, which includes solder mask 
and
> silk screening.  That works out to about $45 per board.  Size is 21
> square inches per board max.
> 
> Dave, just how hard was your current board to work on?  How big is 
it?
>  In your opinion, could some that does everything from MOTM to CGS
> boards be able to build it in it's current configuration?
> 
> Larry T.
> 
> 
> 
> --- In ComputerVoltageSources@yahoogroups.com, "djbrow54" <davebr@>
> wrote:
> >
> > The issue is ExpressPCB is very expensive for solder mask in 
small 
> > quantities.  The setup fee is $233 so you have to order a lot of 
> > boards to cover this cost.  The board needs to be larger so this 
cost 
> > would increase.  Someone with PCB layout software needs to 
layout the 
> > board in a larger size with standard PCB output files.  This 
larger 
> > size would also allow DIP versions of the DACs to be added so 
SMT 
> > could be avoided.  My layout could be used as a starting base.  
I know 
> > there are people on this list that have PCB layout skills, 
software 
> > and experience.
> > 
> > This project will only move forward if others volunteer.  I've 
> > contributed all I can.
> > 
> > Dave
> > 
> > --- In ComputerVoltageSources@yahoogroups.com, "Larry T." 
<larry@> 
> > wrote:
> > > Don't get me wrong.  I know that this is a volunteer effort.
> >
>