Re: Simple LED Alarm Bell for CCTV recorder

[Crash Gordon® <NONE@xxxxxxxx>]

I don't want any mount, no shoulder flange, nutthin special...at least =
for my mock up. It has to fit in very small space, so I'm just gonna hot =
glue them into small opening for the prototype.

Patch cord's too expensive considering that I'm only after the bare =
fibers inside the jacket.

Does your parts supplier have a website with the leds listed?...most =
online's don't have the little stuff online.


"Jackcsg" <nospam@xxxxxxxxxx> wrote in message =
news:O9ydnfJvJ5shXqvfRVn-sw@xxxxxxxxxxxxxxx
> What kind of mount do you need? They have panel mount indicators with =
6"
> leads, they are around $2.38 a piece. They draw 2 ma. There are =
cheaper ones
> too. You can buy just a patch cord for your fiber project already
> connectored for fairly cheap.
>=20
> "Crash Gordon=AE" <NONE@xxxxxxxx> wrote in message
> news:lKsZd.51$cp.1892@xxxxxxxxxxxxxxxxxx
> I need some really small one's without shoulders (maybe 1/8" dia. or
> less...preferably 12v to keep it simple. I'm prototyping an idear for =
alarm
> system. They got anything in Newark cat.? I also need about 10 feet of
> fiberoptic...any scrap junk is fine it's not for communications...if
> anyone's got a piece? I don't want to buy a whole roll in case my =
project is
> a bad idea.
>=20
> "Jackcsg" <nospam@xxxxxxxxxx> wrote in message
> news:1IKdnWfG6vr92KvfRVn-hA@xxxxxxxxxxxxxxx
> > You can buy them with the resistors embedded, at 5 to 28vdc, some =
even to
> 60
> > vdc. (I'm looking through my Newark Catalog), they draw 17 ma at 12 =
vdc. I
> > know the Shack carries them...lord knows I've bought a few hundred
> > there....(I love it when they ask me "what's it for?")
> >
> > "Crash Gordon=AE" <NONE@xxxxxxxx> wrote in message
> > news:rdrZd.46$cp.1735@xxxxxxxxxxxxxxxxxx
> > You'll have to knock the voltage down for the LEDs too..otherwise =
they
> make
> > a nice crackly-popping sound as the plastic shoots across the room.
> >
> > I "think" from 12v to 3v is a 660 ohm resistor...to give you voltage
> > drop...something like that.
> >
> >
> > <me@xxxxxxxxxxx> wrote in message
> > news:lr9c31t6t1qgvqiijck5m2v8fmslnst55b@xxxxxxxxxx
> > > On Mon, 14 Mar 2005 17:35:52 -0500, "Jackcsg" <nospam@xxxxxxxxxx>
> > > wrote:
> > >
> > > >It was simple until you said you wanted the LED to flash. Are you =
good
> > with
> > > >a solder gun? It is easily done, but it's going to be a little
> intricate
> > if
> > > >you're only a DIY'er. Do you want the buzzer to be intermittent =
with
> the
> > > >LED, or a small steady buzz? The switches are easy because you =
can use
> a
> > > >DPDT switch to "shunt" the alarm device.
> > >
> > > I think a small steady buzz.
> > > Note that the CCTV DVR box has 8 wires all 500ma, 12volts each.
> > > All 8 wires from CCTV DVR would go into one black box that is =
drilled
> > > on the front, 8 LEDs, 8 switches (1 per sensor), and buzzer =
inside.
> > >
> > > There should be some way to handle the amp and voltage so it =
doesn't
> > > go back and blow up the CCTV box.
> > >
> > > I've forgotten everything they taught me in science classes. If I =
had
> > > a diagram I could show it to the people in Maplin.
> > >
> >
> >
>=20
>