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nuckolls.bob(at)aeroelect
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 Posted: Wed Oct 18, 2017 11:00 am Post subject: Constructing an automatic RCA video camera feed splitt |
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At 08:49 PM 10/17/2017, you wrote:
| Quote: | | In the fantasy world I enjoy inhabiting, where I’ll happily spend four days of engineering resource researching a different chip to save $0.50 in parts costs (which really only makes sense when you anticipate a production run of thousands, and let’s be honest how many people are going to build a video switcher?) it’s nice to know that you, Bob, don’t need to commit to programming 10,000 PICs - there exists another option, even if it won’t ever be needed. |
exactly . . . one often needs to seek pleasure in
the journey toward the elegant solution. When you're
designing for a potential product flow of thousands,
then pennies/labor matter.
This began as a solution search for a one-off project.
This prompted a search for a short-path to functional
success . . .
Digging around in the junk box, I found some artifacts
from other programs which, after some HOURS of fabrication
effort . . . had a high probability of success.
To be sure, a focused activity to reduce parts/labor
while maximizing functionality can be a lot of fun
and if our customer wants to build lots of them,
equally productive.
But let us suppose our deliberations distill down to
some reasonably elegant design . . . now what? The
original goals are met . . . how's the best way
to spread the value around? Making the data package
public knowledge is easy . . . we'll just post it.
Maybe a youtube video that speaks to procurement,
assembly and installation? Postings on users groups
that point to the video?
The old saw about "building a better mousetrap" is
horse hocky. The ultimate success of useful ideas
is all about promotion . . . disseminating knowledge
to the widest possible audience.
Bob . . .
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nuckolls.bob(at)aeroelect
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| Posted: Thu Oct 19, 2017 1:59 pm Post subject: Constructing an automatic RCA video camera feed splitt |
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At 11:41 AM 10/19/2017, you wrote:
| Quote: | --> AeroElectric-List message posted by: Alec Myers <alec(at)alecmyers.com>
How about floating the PIC power rails to -1.8V/+1.8V ? Or +2.5/-2.5V You’re going to have to generate a PIC voltage supply somewhere, regardless.
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don't think that will be necessary . . . let's
see what the video output on these cameras looks
like.
Haven't played with video since about '75 so I
had to dig into the history a bit. Given that
so much of the world runs on 5v . . . and given
the 3.3 to 5 v supply range of the cameras,
I'm pretty sure they're going to output
signals well inside the dynamic range of the
4066 running on a single rail, 5v supply. This
would make for a happy PIC as well.
Bob . . .
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