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'cats!'
1999\09\09@144007 by Kev Howard

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Does anyone know what frequencies Cats hate?

Its more humane than letting the dog have a free dinner!

Thanks

Kev

1999\09\09@165738 by Dan Larson

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I once hooked a crystal earphone element up to
my signal generator to  see what the cat could
hear.  She could hear up to about 28Khz.  My methods
weren all that exact, but I tried several
frequencies and pulsed the output on and off to
see if it would get her attention.  25Khz seemed
to get her attention pretty well.

I have no idea if she hates it or not.

Of course 120dbs of sound pressure at 25hz
might do the trick! (and drive all living creatures
insane for a 100 yard radius!)

Dan

On Thu, 9 Sep 1999 14:39:05 EDT, Kev Howard wrote:

>Does anyone know what frequencies Cats hate?
>
>Its more humane than letting the dog have a free dinner!
>
>Thanks
>
>Kev
>

1999\09\09@171141 by Andy Kunz

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>Of course 120dbs of sound pressure at 25hz
>might do the trick! (and drive all living creatures
>insane for a 100 yard radius!)

Welcome to Waco.

And Panama.

And other sites around the world.  It's a common technique used by the
military.

Andy

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1999\09\09@172833 by Bob Blick

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I don't understand how a cat can be more trouble than a dog. My neighbor's
cats do not wake me up at 4 in the morning. I can't say the same for the
dogs.

The telephone seems to be the most effective tool for quieting the dogs
:-)

-Bob

On Thu, 9 Sep 1999, Kev Howard wrote:

> Does anyone know what frequencies Cats hate?
>
> Its more humane than letting the dog have a free dinner!
>
> Thanks
>
> Kev
>

1999\09\09@175957 by Kev Howard

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Bob
   Its not that I dont like cats, the neigbours have several wild ones and I
have an 18 month old son who is very inquisitive and likes his eyes!
I figure an annoying frequency to keep the cats away is  better than giving
the dog a free run!
Regards

Kev

1999\09\09@180008 by paulb

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Bob Blick wrote:

> The telephone seems to be the most effective tool for quieting the
> dogs :-)

 Noise-triggered auto-dialler?
--
 Cheers,
       Paul B.

1999\09\09@182746 by Peter van Hoof

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I think 60 hertz will work , or even DC
probably 120 volt will do
Or wasn't that what you wanted to know?

Peter van Hoof
-------------
pvhspamKILLspamvertonet.com
http://go.to/pvh

{Quote hidden}

1999\09\09@184419 by Kev Howard

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Hello Peter
Just want to scare them off via their ears not fry them!

240v here! fry them quicker!

regards

Kev

1999\09\09@190338 by TIM

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i one................... used a neon sign xformer  wired to the fire escape
and ground..well the  trash can was isolated too and wired.......
call it the CAT'S MEOW!!!!!!!!
OMG..... woke the neighbors up in the middle of the night...<G> sorry..
but was really tired of those darn cats prowling around in the trash...
it was triggered by the pir infraed  sensor...(works great for burgulars too
..people that wasn't supposed to be there)  slight shock 150 ma @ 15
kv..............fused....1/2 amp........it stopped the cat's
CAUTION DO NOT ATTEMPT THIS AT HOME......
ONLY TO BE USED UNDER CONTROLLED CONDITIONS......
hehe,,,,
-----Original Message-----
From: Kev Howard <KHo9196475spamspam_OUTAOL.COM>
To: @spam@PICLISTKILLspamspamMITVMA.MIT.EDU <KILLspamPICLISTKILLspamspamMITVMA.MIT.EDU>
Date: Thursday, September 09, 1999 10:40 PM
Subject: Re: cats!


>Hello Peter
>Just want to scare them off via their ears not fry them!
>
>240v here! fry them quicker!
>
>regards
>
>Kev
>

1999\09\09@190526 by paulb

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Kev Howard wrote:

> 240v here! fry them quicker!

 Use a 270k resistor.
--
 Cheers,
       Paul B.

1999\09\09@200551 by Ken Kaarvik

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>Just want to scare them off via their ears not fry them!

Use a motion sensor to turn on a sprinkler. Now you may need a way to tell
the difference between a cat and a kid! (maybe you could use a Pic).

Ken

1999\09\09@213045 by Max Toole

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In a message dated 9/9/99 4:04:02 PM Pacific Daylight Time,
RemoveMEstm800TakeThisOuTspamCITY-NET.COM writes:

<< i one................... used a neon sign xformer  wired to the fire escape
and ground..well the  trash can was isolated too and wired.......
call it the CAT'S MEOW!!!!!!!!
OMG..... woke the neighbors up in the middle of the night...<G> sorry..
but was really tired of those darn cats prowling around in the trash...
it was triggered by the pir infraed  sensor...(works great for burgulars too
..people that wasn't supposed to be there)  slight shock 150 ma @ 15
kv..............fused....1/2 amp........it stopped the cat's
CAUTION DO NOT ATTEMPT THIS AT HOME......
ONLY TO BE USED UNDER CONTROLLED CONDITIONS......
hehe,,,, >>
I had to say this: I love it!

1999\09\09@220412 by Sean H. Breheny

face picon face
I do wonder what the idea of fusing it at 500mA is! That is certainly a LOT
more than is necessary to kill a cat,or a human for that matter. Also, I
hope the term "slight shock" in reference to 150mA is sarchastic,because
that is also more than a lethal level of current.

For a person, IIRC, 1 or 2 mA is considered maximum safe level (and this is
only from a medical standpoint, it is NOT considered safe to allow that
much to flow thru a person on purpose). By touching the case of an old
scope, I found out that I can actually slightly feel only a few 100uA (the
transformer-to-case isolation must have been less than it should be,another
strong argument for isolation transformers!) Something like 4mA is pain
threshold, 20mA strong muscle contractions, 50mA heart rhythm disruption,
100mA death likely. This also depends on the path the current takes. I find
it AMAZING that defibrilators are designed to push something like 10A thru
a person! I wouldn't have thought it possible to do so without REALLY high
voltages and large burns.

In short,I hope you didn't really do this because a little kid could
probably get killed by something like this.

Sean

At 09:30 PM 9/9/99 EDT, you wrote:
>In a message dated 9/9/99 4:04:02 PM Pacific Daylight Time,
>spamBeGonestm800spamBeGonespamCITY-NET.COM writes:
>
><< i one................... used a neon sign xformer  wired to the fire
escape
{Quote hidden}

| Sean Breheny
| Amateur Radio Callsign: KA3YXM
| Electrical Engineering Student
\--------------=----------------
Save lives, please look at http://www.all.org
Personal page: http://www.people.cornell.edu/pages/shb7
TakeThisOuTshb7EraseMEspamspam_OUTcornell.edu ICQ #: 3329174

1999\09\09@220515 by Matthew Fries

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60Hz might get the cat's attention, but may not repel it. My friend's cat
just loves it when he plugs his speakers in to his sound card!  :)



At 06:25 PM 9/9/99 -0400, you wrote:
>I think 60 hertz will work , or even DC
>probably 120 volt will do
>Or wasn't that what you wanted to know?
>
>Peter van Hoof
>-------------
>RemoveMEpvhspamTakeThisOuTvertonet.com
>http://go.to/pvh
>
>> {Original Message removed}

1999\09\09@223122 by Peter van Hoof

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This depends very much on circumstances sometimes defying logic or
explanation
as a teenager I grabbed the two poles of a 3kg heavy neon transformer...7kv
@100ma...
you would assume since current flowed from hand to hand, path over the chest
this should be deadly..... it was not. I did not manage to release the poles
but after about 15 seconds managed to kick the plug out of the outlet.

I survived , shaken , but unharmed.

Peter van Hoof
-------------
pvhEraseMEspam.....vertonet.com
http://go.to/pvh

[snip]
{Quote hidden}

1999\09\09@223142 by TIM

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did i not say at the end of message   PLEASE DO NOT TRY THIS AT HOME ONLY
FOR PROFESSIONALS UNDER CONTROLLED CIRCUMSTANCES.......MY DISCLAMER..... i
understand.about children they get very courious but the thing only turns on
when it is dark ( kids r to be in bed ) and it is part of a warning scheme
... also a pic monitors all thru ccd infra  cam    nite
vision...........recorded into a v c r....
sorry but some teen agers don't get messages very well............
not my fault........so got rid of the cat's my primary  objective........

{Original Message removed}

1999\09\09@225727 by Sean H. Breheny

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Hi Peter,

I agree that electronics often appears to defy logic,but did you actually
measure the current? Just because the supply is capable of 100mA doesn't
mean that 100mA actually went through you. Hand-to-hand "resistance" varies
greatly. With my ohmmeter testing myself, I can get it to go as low as
about 200k with sweaty hands and a firm grip,and almost arbitrarily high if
I lightly touch it. I realize that due to electrochemical effects,this
would be different for higher voltages,but it would still vary.

7kv/200k = 35mA,so as you can see,it is quite likely that you didn't in
fact experience a 100mA current.

You probably understand this fully,and are just making the point that what
shock you actually receive depends on the circumstances and you are quite
right. I just find it annoying that some people will make statements like
"Car batteries can source 100's of amps so they can easily kill you",when
in fact much less than 100A is necessary to be lethal. It all depends on
the current that actually goes through you,which depends entirely on
circumstances,which aren't even really ohmic (due to the complex
composition of various tissues).

Sean

At 10:16 PM 9/9/99 -0400, you wrote:
{Quote hidden}

| Sean Breheny
| Amateur Radio Callsign: KA3YXM
| Electrical Engineering Student
\--------------=----------------
Save lives, please look at http://www.all.org
Personal page: http://www.people.cornell.edu/pages/shb7
RemoveMEshb7EraseMEspamEraseMEcornell.edu ICQ #: 3329174

1999\09\09@230855 by Sean H. Breheny

face picon face
Hi Tim,

I saw your disclaimer,but it just said that you didn't recommend that
others try this. I was just trying to warn you about how very dangerous
something like this is. I think you would probably be liable even if it
were a burglar,since they would get it before they were inside your house.

In addition, I just don't think you can assume that no innocent people will
get killed this way. IMHO, "controlled circumstances" means continuous
observation when it comes to un-enclosed HV.

It just seems to me that there are safer ways to deter cats.

Sean


At 10:20 PM 9/9/99 -0000, you wrote:
{Quote hidden}

| Sean Breheny
| Amateur Radio Callsign: KA3YXM
| Electrical Engineering Student
\--------------=----------------
Save lives, please look at http://www.all.org
Personal page: http://www.people.cornell.edu/pages/shb7
RemoveMEshb7spam_OUTspamKILLspamcornell.edu ICQ #: 3329174

1999\09\10@005542 by paulb

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Sean H. Breheny wrote:

> Just because the supply is capable of 100mA doesn't mean that 100mA
> actually went through you.  Hand-to-hand "resistance" varies greatly.

 I find it quite unlikely that at that (open-circuit) voltage, it would
deliver its full current limit, since it would easily arc *through* any
skin resistance and body resistance is only in the order of hundreds of
ohms.

 It's an interesting story of a very *lucky* Van Hoof.  I'll bet he was
sporting burns for a while.
--
 Cheers,
       Paul B.

1999\09\10@063737 by Sean H. Breheny

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Paul, didn't you really mean that to be a positive statement? Like: "I find
it quite LIKELY",etc.
It seems like that from the rest of the sentence.

On this, I have to stand corrected once again. I knew that this wouldn't be
a truly ohmic situation,but I forgot about arcing through the skin at such
a high voltage. SO, I guess it would have delivered the full current
(limited just by the supply itself). Nothing like the PICLIST to help one
with the virtue of humility <G>.

Yes,indeed,you were very lucky, Peter.

Sean


At 02:39 PM 9/10/99 +1000, you wrote:
{Quote hidden}

| Sean Breheny
| Amateur Radio Callsign: KA3YXM
| Electrical Engineering Student
\--------------=----------------
Save lives, please look at http://www.all.org
Personal page: http://www.people.cornell.edu/pages/shb7
RemoveMEshb7TakeThisOuTspamspamcornell.edu ICQ #: 3329174

1999\09\10@065202 by mjurras

picon face
>>Just want to scare them off via their ears not fry them!
>
>Use a motion sensor to turn on a sprinkler. Now you may need a way to tell
>the difference between a cat and a kid! (maybe you could use a Pic).

Why my kids would love a motion activated sprinkler. :)

An electric fence found on the farm works nicely. Non-leathal and kids are only
curious about it
ONCE!! If you build a PIC based version let me know. I'll work on it with you. I
need to keep mice
out of my MG.

I was in a friends basement as he was searching for something or other. He came
across an old
style 24 hr format mechanical digital clock. He pulled the clock off the shelf a
nd asked his 6
year old son if he wanted to play with it. The kid dissapeared faster than the R
oad Runner just
before the coyote was foiled by his latest scheme. Apparently, one day the boy r
eceived a 120VAC
shock while playing with it and just the sight of it scared him.

- -Mark

P.S. Please don't wiz on the electric fence! =:0
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com

1999\09\10@095645 by eplus1

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...this explains allot....

<GRIN> Sorry but I had to... The Devil made me do it!

James Newton, webmaster http://get.to/techref
(hint: you can add your own private info to the techref)
EraseMEjamesnewtonspamspamspamBeGonegeocities.com
1-619-652-0593 phone



{Original Message removed}

1999\09\11@015401 by Nigel Goodwin

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In message <010701befb20$35576dc0$37d766cf@ken>, Ken Kaarvik
<RemoveMEKen_KaarvikKILLspamspamBC.SYMPATICO.CA> writes
>>Just want to scare them off via their ears not fry them!
>
>Use a motion sensor to turn on a sprinkler. Now you may need a way to tell
>the difference between a cat and a kid! (maybe you could use a Pic).

Visit your local zoo or Safari Park and buy some lion droppings, all
cats mark their territory, and lion droppings placed strategically warn
smaller cats to keep away. There's recently been a series on UK TV
called 'Lion Country', about a safari park, and they showed this
actually in use - they followed a guy home who had lots of cats ruining
his lawn, he placed the droppings and the cats wouldn't come closer than
the other side of the road :-).
--

Nigel.

       /--------------------------------------------------------------\
       | Nigel Goodwin   | Internet : nigelgSTOPspamspamspam_OUTlpilsley.demon.co.uk     |
       | Lower Pilsley   | Web Page : http://www.lpilsley.demon.co.uk |
       | Chesterfield    | Official site for Shin Ki and New Spirit   |
       | England         |                 Ju Jitsu                   |
       \--------------------------------------------------------------/

1999\09\11@073403 by Quentin

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Nigel Goodwin wrote:

> Visit your local zoo or Safari Park and buy some lion droppings, all
> cats mark their territory, and lion droppings placed strategically warn
> smaller cats to keep away.

Now I wonder which smell the worst. Lion droppings or cat droppings?

Hey Tjaart, we can start a new business here in Africa!
Shall we start the bid at say $1.00 a dropping? Freshly packed.
Special for today: Free if you go fetch it yourself!

Quentin

1999\09\11@081555 by bo.berglund

picon face
Exactly what model of PIC controller were you going to add to this project?
/Bo

-----Original Message-----
From: pic microcontroller discussion list
[spamBeGonePICLISTSTOPspamspamEraseMEMITVMA.MIT.EDU]On Behalf Of Quentin
Sent: Saturday, September 11, 1999 1:34 PM
To: KILLspamPICLISTspamBeGonespamMITVMA.MIT.EDU
Subject: Re: cats!


Nigel Goodwin wrote:

> Visit your local zoo or Safari Park and buy some lion droppings, all
> cats mark their territory, and lion droppings placed strategically warn
> smaller cats to keep away.

Now I wonder which smell the worst. Lion droppings or cat droppings?

Hey Tjaart, we can start a new business here in Africa!
Shall we start the bid at say $1.00 a dropping? Freshly packed.
Special for today: Free if you go fetch it yourself!

Quentin

1999\09\11@105852 by Eric Oliver

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Tsk, Tsk.  How dare you suggest a low tech solution <bg> !  And a clever one at
that !

Eric

On Friday, September 10, 1999 1:21 AM, Nigel Goodwin [SMTP:EraseMEnigelgspamEraseMELPILSLEY.DEMON
.CO.UK] wrote:
{Quote hidden}

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