Saurabh Sinha <ssinha@IEEE.ORG> wrote:
> I am looking for remote-operated switch schematic/software. Any advice would
> be appreciated. My basic interest is to switch on a camera that maybe (say
> 50m or even more- the range is another problem)...
>
> Any advice would be greatly appreciated.
>

For a simple solution you could use a cheap digital camera.  A pic can
control a cheap digital camera by using a 4066 to make the contacts
normally made by the camera's buttons.  You can program the pic to take
a picture or several in response to an event detected by a PIR or other
sensor.  This works well for automated wildlife photography.  For
activating the camera at 50m I'd suggest the RF remote control keyfobs
sold widely for car alarm / security applications.  Most of the reciever
units have a simple logic output that can be connected directly to a
pic.

For video any 2.4GHz video transmitter would be able to cover 50m line
of sight without a problem.  Look for a unit that has a remote control
extender.  This means that as well as sending video back from the
camera, the system can also send IR commands via the transmitter to any
equipment at the camera from the reciever end.  This is useful because
it could allow you to control the camera direction using an IR remote if
you wanted to build that feature into your system.

Kayode
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