[Coco] A little off topic

Wed May 17 11:28:46 EDT 2017

Not necessarily...

http://skyrfid.com/RFID_Tag_Read_Ranges.php

You can find RFID technology whose range is a couple of feet. Although RFID came to mind, I was hesitant to recommend it because I was not sure of its implementation complexity or cost. The electronics of it aren't too complex and if you search for Arduino RFID you'll get plenty of options. I would probably look for other options, but not discard RFID entirely.

I still like your option of using RF. Perhaps you can adjust the range by limiting the power to the transmitter.. Here is an interesting video: https://www.youtube.com/watch?v=n1nFZIz6-w0

If you want to search for other ideas, a good place to go is Element 14. This is a sort-of social network for engineers. They have been very helpful to me in the past and in fact, that is where I keep my blog. They are always happy to answer questions. (I should say "we", because I am part of that community, but felt awkward because I have not been there in a while.)

https://www.element14.com/community/welcome

Regards, Salvador

      From: William Mikrut <wmikrut72 at gmail.com>
 To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
 Sent: Wednesday, May 17, 2017 7:56 AM
 Subject: Re: [Coco] A little off topic

The only issue I have with rfid is that it's very close range...only a few
inches at most.

Second, I don't know very much about rfid circuitry.

On May 17, 2017 12:06 AM, "Scott Wendt" <malfunct at msn.com> wrote:

> RFID might be the way to go for this, there are some RFID detectors with a
> range of a handful of feet.
>
>
> The idea would be put the RFID tag on one animal and the RFID scanner on
> the other animal set to beep when it detected the tag.
>
> ________________________________
> From: Coco <coco-bounces at maltedmedia.com> on behalf of William Mikrut <
> wmikrut72 at gmail.com>
> Sent: Tuesday, May 16, 2017 9:10:59 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] A little off topic
>
> We were thinking about a foot or two.
> Any closer and the cat is on its way to being a dog snack.
>
> Mind you... we won't be actually placing these on animals... (although my
> daughter will want to).
>
> I Was likely going to put both units in a small project box and move the
> boxes close to each other to initiate the beeping.
>
> On May 16, 2017 10:23 PM, "Salvador Garcia via Coco" <coco at maltedmedia.com
> >
> wrote:
>
> > A possible problem that I see is that even without an antenna, the comm
> > range could be 10 feet or more. Also since both components will be
> > "mounted" on the tabby and canine, the orientation on the devices will be
> > constantly changing and in some cases, the orientation of the device
> > affects the range.
> >
> > The first question I would ask is how close do you want the two devices
> to
> > be for the trigger to go off?
> >
> > Salvador
> >
> >      From: William Mikrut <wmikrut72 at gmail.com>
> >  To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> >  Sent: Tuesday, May 16, 2017 8:40 PM
> >  Subject: Re: [Coco] A little off topic
> >
> > Ok, so keep in mind this is for a 5th grade project... and will get my
> > daughter into working with components... that's the main point of the
> > project!
> >
> > She came up with an idea --- to try and keep the dog and cat away from
> each
> > other, build a device that beeps when they're close.
> > So, I went to work thinking up how to do this and tried to keep it as
> > simple as possible.
> >
> > I was going to start with an RF Transmitter & Receiver for use with
> Arduino
> > DIY Projects:
> > ( I am not embedding links here because I am not advertising anyone site
> )
> >
> > I figure without an external antenna -- maybe the transmitter/receiver
> can
> > be a couple feet away and function... any further and the link is broken.
> > I planned to attach a 555 timer pulse to the transmitter data pin and
> keep
> > sending a pulse all the time.
> >
> > On the receiver have a transistor (or such)  hooked up to the data pin.
> > When data is received, it receives the 555 pulse, and in the transistor
> > circuit have a small piezoelectric speaker that sounds out the 555 pulse
> > from the transmitter.
> >
> > Volia -- close proximity -- loud pulse from the small speaker.
> >
> > Epic failure -- or plausible project we can build?
> > Thank you!
> >
> >
> >
> > On Tue, May 16, 2017 at 6:46 PM, Camillus Blockx <
> camillus.b.58 at gmail.com>
> > wrote:
> >
> > > Let's hear it..
> > > Cb
> > >
> > >
> > > On May 16, 2017 5:27 PM, "William Mikrut" <wmikrut72 at gmail.com> wrote:
> > >
> > > > I have a question... and there are hardware gurus out there (you know
> > who
> > > > you are).
> > > > And I was hoping I could ask for a little time from someone to lend
> > some
> > > > offline expertise to me.
> > > >
> > > > I have a child who wants to build an electronics project for school.
> > > > I attended ITT --- but it was so long ago, I am extremely rusty as
> > > designs.
> > > >
> > > > I have the basic idea and parts list -- and before I start purchasing
> > and
> > > > assembling ( and quite possibly letting a lot of magic smoke escape
> ),
> > I
> > > > was hoping I could run the idea passed someone and ask if what we are
> > > > trying to accomplish is as simple as I see it.
> > > >
> > > > It's a small project and will require no more than a handful of
> parts.
> > > > Thank you!
> > > >
> > > > --
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> > > > Coco at maltedmedia.com
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> > > >
> > >
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> > >
> >
> > --
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> >
> >
> >
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