Comments below.
----- Original Message -----
Sent: Friday, December 10, 1999 6:56 AM
Subject: Re: RF Interface
> If your receiver has a time lag, why not:
>
> Send the sync from somewhere the user triggers (not the camera
itself);
This idea is something I've considered in
the past, but I'm not too keen on connecting some mechanical marvel of
my own design to one of these lenses.(Shuttered lenses are
expensive). For this reason I'd rather stay with the slave connector. It
may be that there isn't an economical(hobbiest) solution.
>
SNIP
> Mark
>
> Dan Creagan wrote:
>
>
> > I have done the photoresistor sync before and I've also used
the commercial
> > versions (the cheap ones). If RF is your
thing, you can try Linx
> > Technologies (www.linxtechnologies.com). Their HP
version will handle 50
> > Kbps and that should let you send a modest
preamble/trigger sequence that
Maybe encoded was a poor
choice of words, I'm not overly concerned with another RF source
triggering the strobes. And although the bells and whistles of being able to
trigger individual strobes would be nice, unnecessary as well. I think
most RF modules operate in a burst mode as opposed to continuous. Not
having tried any of them, I probably should have asked what the latency was from
detect to decode. While the web sites offer info on maximum throughput,
none mentions latency. Although I know the more mathmatically inclined
could probably calculate an approximation.
> > You would need a hot oscillator or latency in
processing would affect the
> > fastest sync timing.
Here I'm assuming you mean to use
something along the lines of a missing pulse detector. Most commercial
units I've seen have a ready indicator that lights to let you know it has
detected the xmttr. So, here I'm guessing, the xmttr is constantly sending
something to rcvr. After a flash the ready light goes off and moments later
comes on again. On second thought this method would cause the unit to fire
when the xmttr went out of range, was turned off, failed, etc.. I
don't remember this as being the case on the units I've rented. At any
rate thank you all for the ideas.
Doug
The Linx development kit is $299 - the modules are
around
> > $60 for a rx/tx pair.
> > Dan
> >
----- Original Message -----
> > From: Douglas Burkett
> > To:
PICLIST@MITVMA.MIT.EDU
> >
Sent: Thursday, December 09, 1999 4:14 AM
> > Subject: RF
Interface
> >
> > I've read with interest the messages about
RF and IR remote interfacing
> > Long winded I see, my question
is, are there available RF or IR modules<SNIP>
> > that would decode in time to sync at
1/500th? I don't want to use unencoded
> > modules as false
trigger would be fairly expensive waste of film.
> >
> > Any
ideas?
> >
> > Thanks,
> >
Doug