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.
> >
>