[sdiy] Minimoog clone, was: Wasp clone, was: SDIY UK 2010 pics and vid

[cheater cheater]

Yeah, things like trimmer footprints can certainly be updated, but
otherwise the idea is to keep the same layout to have the
same/comparable RF performance, capacitive coupling, and what ever
else the layout does actually influence as a 'bug' rather than a fully
intended method of functioning. I guess with the other parts you want
the same stuff (where it's crucial); or things that are popular mods
and just make the thing sound better (such as better op-amps here and
there). The parts that need to be authentic should probably be
specifically chosen to have been created in the same process as the
originals, which also dictates the footprints to be original.

D.

On Wed, Jul 14, 2010 at 03:03, David Griffith <dgriffi at cs.csubak.edu> wrote:
> On Tue, 13 Jul 2010, cheater cheater wrote:
>
>> Bryce,
>>
>> On Tue, Jul 13, 2010 at 17:55, Bryce Lanham <blanhamsynthdiy at gmail.com>
>> wrote:
>>>
>>> Yeah, I want to eventually trace the board layout directly and have
>>> some boards professionally made. If someone on list is willing to
>>> stick their mini's boards in the scanner and make some high resolution
>>> high contrast  b/w scans. Fantasy jack palance has good pictures, but
>>> they are not 1-to-1 scaled. (...) it would have been practically
>>> impossible to layout w/o a 1-1 scan.
>>
>> They don't need to be 1 to 1 photos/scans. You can tell the right
>> scale from the distance between pads etc. What's worse is lens
>> distortion, i.e. when the photograph is not a linear transformation of
>> the flat image of the pcb.
>>
>> Tim,
>> I'm not in any way disrespecting the amount of work involved... it's
>> just that laying out the PCBs are the bulk of work that stops many
>> people from getting anywhere with their clones, and so nobody actually
>> builds them. Drawing out a pcb layout would be a do-once
>> profit-forever job that would benefit lots of people and give them a
>> kick-start. The soldering can be done by a well-trained chimp ;-).
>> Once people are easily able to get working PCBs, they will all start
>> running into the problem of mechanics, and then they will start
>> cooperatively solving the problems associated with that, will start
>> making drawings, projects, etc.
>
> I love doing PCB layouts.  If I can get the schematics straight and some
> critical measurements (dimensions and edge finger details), the rest comes
> pretty easy.  Allowances can be made for modern trimmer footprints, among
> other things.
>
> --
> David Griffith
> dgriffi at cs.csubak.edu