Re: Switching +/-12V from 6/0V


"George" <gh424NO824SPAM@xxxxxxx> wrote in message
news:UaBli.30500$LE1.4115@xxxxxxxxxxxxxxx
In article <CL-dnYWKv7tfWQvbnZ2dnUVZ_hOdnZ2d@xxxxxxxxxxx>,
t-tammaru@c0mca$t.net says...

Before you do all this, see if there is software
available from the camcorder manufacturer that lets you
control it from a PC via a USB or Firewire connection. I
looked at solenoids at the Digikey web site, and they
all looked like overkill.

Well, actually, what I'm using used to be a relay, not a
solenoid officially. I found it in a coffee can full of
junque, and its contact travel is a perfect match for the
button, and it was easy to mount. So the whole design has
pretty much revolved around that find.

I had thought about controlling things from a laptop, and
I assume it's possible, but would really rather not have to
do that if I can avoid it.


I think the clean way is to use the camcorder as a camera only, and have the
laptop capture a frame every x seconds on to your hard drive.
You probably can't record single frames of video to tape anyhow; so, you
have to use the still camera mode. This will require software to change the
single pictures into video. That same program could have the option of doing
time lapse directly.

Tam


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