On Thu, 24 Aug 2000 10:10:44 +0800, you wrote:

>Hi hope you have some luck with your sub, there is some good info and =
links
>at http://www.subcommittee.com that might help you.
>
>I am also building a sub (a manned one, not model) so if anyone has some
>links to sonar, water speed/depth PIC projects or similar please let me =
know
>as well.
>
>        cya,    Andrew...
>
>> -----Original Message-----
>> From: Hans-Christian Prytz [SMTP:hans-christian@PRYTZ.NET]
>> Sent: Wednesday, August 23, 2000 11:25 PM
>> To:   PICLIST@MITVMA.MIT.EDU
>> Subject:      [OT]: Remote controlled sub with video camera
>>
>> Hi,
>> I'm planning on building a small remote controlled (by cable probably)
>> submarine, and naturally I hope to control it with pic controllers ( I
>> haven't decided exactly which ones yet).
>> I don't expect many major problems with the controlsystem itself, but =
I am
>> a bit in deep water regarding the camera.
>> After looking at the archives of the list, it seems that I might be =
best
>> off going with either a VV6301 (or similar) or the M64282FP (the one =
in
>> the
>> Gameboy camara).
>> I plan to send the data up to shore, probably sharing bandwith with =
the
>> control signals to the sub, maybe using a RS485 link, or something
>> similar.
>> However I am a bit uncertain as to how these cameras behave, so I hav =
a
>> few
>> qestions:

>> 3. Am I barking up the totally wrong tree here? Is it at all possible =
to
>> do
>> this with the type of hardware mentioned? Or should I go with a =
seperate
>> video feed (which is much more expensive)?
You might want to look at doing it the other way round - send back
standard composite video on a single coax with power going the other
way down the same cable, and insert the control signals in the
vertical blanking period, i.e. piggyback control onto video instead of
the other way round. You can  easily get composite video cameras which
are very, very small and very cheap. Digital isn't always the best
solution....!

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