[Coco] A little off topic

[Salvador Garcia]

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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