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PICList Thread
'Cockroach Detection'
1998\12\29@205557 by Max Toole

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In a message dated 98-12-29 19:48:29 EST, you write:

<< It's summer here.  The local animal populations are moving faster.

The usual technique is to regularly place poison baits, but we forget to
place new baits.  I'd love to figure a way to be warned that the
detested invaders are returning.  So I imagine a PIC sitting on the
floor watching an area and counting the crawlers that pass.

Any ideas? >>

No, but I can't wait to follow this thread and get some ideas.  I live in
Georgia and hate the crawlers.

Max

1998\12\29@221913 by Stuart O'Reilly

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I find that a half starved cat works wonders
Stu


Max Toole wrote:

{Quote hidden}

1998\12\30@011430 by keller

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Use a laser and detect the beam breaks.
Increase the power and zap the suckers it will save some money on bait.

Steve


{Original Message removed}

1998\12\30@025456 by Mark Willis

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Talking to Robin, she says that "Combat" (The poison she chose when
living in one apartment complex that had such problems) comes in little
cans that last a month+ apiece, so 6 would run you 6 months;  release a
sear every month or so & dispense another, beep after 6 months is up a
few times a day during daylight, should work OK...  Load the baits on
Daylight Savings changes (or the Equinoxes)  <G>

 Mark, spam_OUTmwillisTakeThisOuTspamnwlink.com

Steven Keller wrote:
>
> Use a laser and detect the beam breaks.
> Increase the power and zap the suckers it will save some money on bait.
>
> Steve
>
> {Original Message removed}

1998\12\30@084457 by Andy Kunz
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At 12:38 AM 12/30/98 +0000, you wrote:
>It's summer here.  The local animal populations are moving faster.
>
>The usual technique is to regularly place poison baits, but we forget to
>place new baits.  I'd love to figure a way to be warned that the
>detested invaders are returning.  So I imagine a PIC sitting on the
>floor watching an area and counting the crawlers that pass.

Boric acid in powder.

==================================================================
Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA
==================================================================

1998\12\30@092718 by lilel

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Marl Willis Sez:
> Talking to Robin, she says that "Combat"

COMBAT is the choice of my buddy who is a landlord.  I think that
setting up a bunch of combat baits, then programming your PIC to
"estimate" the number of cockroaches would be easier.

First you press a button when you see a cockroach.  This
initializes the PIC program.  The gestation period for cockroach eggs
is, we will guess, 3 days.  Assuming this cockroach is at the median
age, we multiply this one cockroach by one million in 1.5 days.
(they lay a million eggs.)  Then each three days, multiply by another
one million.  Let's see - after a month that would be 10E60
cockroaches after one month.  Pretty close, don't you think?

There- simple, just one button press.
-- Lawrence Lile

=> Median Filter Source Code
=> AutoCad blocks for electrical drafting
=> Brownout tester plans
=> Amateurish pictures of my family

at:  http://home1.gte.net/llile/index.htm

1998\12\30@112742 by Peter L. Peres

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Hello,

On Tue, 29 Dec 1998, Max Toole wrote:

> No, but I can't wait to follow this thread and get some ideas.  I live in
> Georgia and hate the crawlers.

Oh *hating* them is different than *counting* them. A bifilar winding on
two parallel insulating rods (paintbrushes stuck throught the box walls)
will do it, when connected to mains through a small bulb (serves as
cooking time limiter for creepys ;). All this goes into the floor of an
old cardboard box (shoebox) with 1 hole and smelly bait at the other end
from where you make a hole. Also catches mice etc. 220V definitely works
better than 110 ;)

still no PIC, unfortunately ;)

Peter

1998\12\30@112744 by Peter L. Peres

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On Wed, 30 Dec 1998, James Cameron wrote:

> It's summer here.  The local animal populations are moving faster.
>
> The usual technique is to regularly place poison baits, but we forget to
> place new baits.  I'd love to figure a way to be warned that the
> detested invaders are returning.  So I imagine a PIC sitting on the
> floor watching an area and counting the crawlers that pass.

Hi, it's me again ;)

I once made a creepy counter that used a microphone. A piezo microphone
was slightly altered so it had mechanical contact with a lightweight
inverted plastic dish that was supported at the rim. Bait (syrup in a
plastic bottle cover) was placed on it and a camera above. A level
settable trigger (audio amp with threshold detector) shot pictures of the
visitors during the night. The noise of tiny legs walking on the plate is
worth listening to. Loud environmental noises will also trigger the unit
as it was (no low pass filter).

hope this helps,

Peter

1998\12\30@135324 by paulb

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Peter L. Peres wrote:

> I once made a creepy counter that used a microphone.

 Why does this not surprise us?

>  A piezo microphone was slightly altered so it had mechanical contact
> with a lightweight inverted plastic dish that was supported at the
> rim. ...
--
 Cheers,
       Paul B.

1998\12\30@141021 by paulb

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Andy Kunz wrote:

> Boric acid in powder.

 Don't you have to add sugar or something?
--
 Cheers,
       Paul B.

1998\12\31@073841 by Andy Kunz

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At 06:08 AM 12/31/98 +1000, you wrote:
>Andy Kunz wrote:
>
>> Boric acid in powder.
>
>  Don't you have to add sugar or something?

No to kill them.  To bait them, if you really want to attract them to your
home, I guess you would need sugar.  As I recall, they didn't need much
baiting <G>

Andy


==================================================================
Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA
==================================================================


'Cockroach Detection'
1999\01\01@234541 by Brian Duran
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Hi

I know that someone did something with flyies and lasers.  They first used
a basic motion detector (ultraSound) and then they switch to a camera or
something which allowed them to narrow in on the bugs location, and shoot
it.  As you can tell I don't really know the details.

But if all you want to do is cound the number, then I think a laser beam
would work wonders.


On Wed, 30 Dec 1998, Steven Keller wrote:

> Use a laser and detect the beam breaks.
> Increase the power and zap the suckers it will save some money on bait.
>
> Steve
>
>
> {Original Message removed}

1999\01\02@093250 by paulb

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Andy Kunz wrote:

>>> Boric acid in powder.
> No to kill them.  To bait them, if you really want to attract them to
> your home, I guess you would need sugar.  As I recall, they didn't
> need much baiting <G>

 How do they know to eat the boric acid powder then?

Brian Duran wrote:

> I know that someone did something with flyies and lasers.  They first
> used a basic motion detector (ultraSound) and then they switch to a
> camera or something which allowed them to narrow in on the bugs
> location, and shoot it.

 I've often thought of that one, but it smacks of that discussion a
while back about the robotic lawnmowers.  What happens if it confuses
*you*, or some part of you, for the bug?

 The lasers are presently hard to come by with a, say, 1 kJ pulse
*output*.  If located about 6" from the ceiling it would perhaps be
little worse risk than a similarly placed ceiling fan...
--
 Cheers,
       Paul B.

1999\01\02@193013 by Andy Kunz

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>  How do they know to eat the boric acid powder then?

No need to eat it.  It is one of few things which goes _through_ their
shell.  Kills them by contact.

In the USA it's sold as "Roach Prufe" but that's the active ingredient.

Andy

==================================================================
 Andy Kunz - Montana Design - http://www.users.fast.net/~montana
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