LED flasher for a dog's collar.

[greysky]

Hi-

I need to build some sort of a flasher to put on my dog's collar- she's the
same color as the carpet and keeps getting stepped on I'm thinking a
3909 flasher running a LED from a coin cell. I haven't kept up to date on
what's available, or if there are any better chips than the LM 3909 out
there. Ideally it should be able to run for a year and be small enough to be
clipped onto the dogs collar without having a honking big battery hanging
off it (ideally the thing has to be smaller than the dog, which is pretty
tiny). Any suggestions appreciated. TIA.

 

[Jim Thompson]

Hi-

I need to build some sort of a flasher to put on my dog's collar- she's the
same color as the carpet and keeps getting stepped on I'm thinking a
3909 flasher running a LED from a coin cell. I haven't kept up to date on
what's available, or if there are any better chips than the LM 3909 out
there. Ideally it should be able to run for a year and be small enough to be
clipped onto the dogs collar without having a honking big battery hanging
off it (ideally the thing has to be smaller than the dog, which is pretty
tiny). Any suggestions appreciated. TIA.

Get a bigger dog ?

...Jim Thompson

 

[GregS]

Hi-

I need to build some sort of a flasher to put on my dog's collar- she's the
same color as the carpet and keeps getting stepped on I'm thinking a
3909 flasher running a LED from a coin cell. I haven't kept up to date on
what's available, or if there are any better chips than the LM 3909 out
there. Ideally it should be able to run for a year and be small enough to be
clipped onto the dogs collar without having a honking big battery hanging
off it (ideally the thing has to be smaller than the dog, which is pretty
tiny). Any suggestions appreciated. TIA.

You need to get a bigger dog.

Paint the dog.

Put a helium baloon on it.

Does the dog sleep with you?

greg

 

[tommy]

You need to get a bigger dog.

Paint the dog.

Put a helium baloon on it.

Does the dog sleep with you?

greg

Maybe just a simple 555 astable?

 

[John Woodgate]

In message <[email protected]>, dated Wed, 30

Get a bigger dog ?

.... or dye it purple. (;-)

 

[GregS]

Maybe just a simple 555 astable?

I have been playing around flashing an LED. My application requires less than optimal
flash length for viewing with the eye. Since I don't have a regular pulse generator
setup, I'm wondering what the optimum-minimum duration for good viewing might be.

greg

 

[Homer J Simpson]

... or dye it purple. (;-)

Or insert the flasher rectally?



--
_____ _ _
|_ _| | | | |
| | __ _ _ __ ___ | |__| | ___ _ __ ___ ___ _ __
| | / _` | '_ ` _ \ | __ |/ _ \| '_ ` _ \ / _ \ '__|
_| |_ | (_| | | | | | | | | | | (_) | | | | | | __/ |
|_____| \__,_|_| |_| |_| |_| |_|\___/|_| |_| |_|\___|_|
__ ____
/ _| | _ \
___ | |_ | |_) | ___ _ __ __ _
/ _ \| _| | _ < / _ \| '__/ _` |
| (_) | | | |_) | (_) | | | (_| |_
\___/|_| |____/ \___/|_| \__, (_)
__/ |
|___/

 

[ian field]

Or insert the flasher rectally?



--
_____ _ _
|_ _| | | | |
| | __ _ _ __ ___ | |__| | ___ _ __ ___ ___ _ __
| | / _` | '_ ` _ \ | __ |/ _ \| '_ ` _ \ / _ \ '__|
_| |_ | (_| | | | | | | | | | | (_) | | | | | | __/ |
|_____| \__,_|_| |_| |_| |_| |_|\___/|_| |_| |_|\___|_|
__ ____
/ _| | _ \
___ | |_ | |_) | ___ _ __ __ _
/ _ \| _| | _ < / _ \| '__/ _` |
| (_) | | | |_) | (_) | | | (_| |_
\___/|_| |____/ \___/|_| \__, (_)
__/ |
|___/

A AAA Maglight would fit up the dog's arse just right.

 

[Spehro Pefhany]

In message <[email protected]>, dated Wed, 30


... or dye it purple. (;-)

Use a semi-permanent hair dye that is intended to glow under club
black lights. Install black lights.


Best regards,
Spehro Pefhany

 

[quietguy]

Is there some reason you do not want to just use a flashing LED?

David

 

[[email protected]]

Hi-

I need to build some sort of a flasher to put on my dog's collar- she's the
same color as the carpet and keeps getting stepped on I'm thinking a
3909 flasher running a LED from a coin cell. I haven't kept up to date on
what's available, or if there are any better chips than the LM 3909 out
there. Ideally it should be able to run for a year and be small enough to be
clipped onto the dogs collar without having a honking big battery hanging
off it (ideally the thing has to be smaller than the dog, which is pretty
tiny). Any suggestions appreciated. TIA.

Train the dog to stay out of the way.

We trained our cats by gently kicking them in the ribs when they got
underfoot. This annoys cats, and they quickly learn to steer clear of
people's feet.

Alternatively, you can buy such collars at PetCo, but plan on
changing batteries about 50x more often than your spec.

Best,
James Arthur

 

[Jim Thompson]

Train the dog to stay out of the way.

We trained our cats by gently kicking them in the ribs when they got
underfoot. This annoys cats, and they quickly learn to steer clear of
people's feet.

Alternatively, you can buy such collars at PetCo, but plan on
changing batteries about 50x more often than your spec.

Best,
James Arthur

Step on their paws a few times or, as I did, roll my desk chair over a
paw... they learn really fast.

(I really felt bad about that one... I thought I had broken the pup's
paw, but nope... just lots of yelping ;-)

...Jim Thompson

 

[[email protected]]

On 30 Aug 2006 15:38:01 -0700, [email protected] wrote:

Step on their paws a few times or, as I did, roll my desk chair over a
paw... they learn really fast.

(I really felt bad about that one... I thought I had broken the pup's
paw, but nope... just lots of yelping ;-)

Or we could go the other way: outfit the dog with a fence charger,
thus quickly teaching people not to step on him...

Cheers,
James Arthur

 

[ehsjr]

Maybe just a simple 555 astable?

Instead of the dog?

 

[Robert Baer]

Hi-

I need to build some sort of a flasher to put on my dog's collar- she's the
same color as the carpet and keeps getting stepped on I'm thinking a
3909 flasher running a LED from a coin cell. I haven't kept up to date on
what's available, or if there are any better chips than the LM 3909 out
there. Ideally it should be able to run for a year and be small enough to be
clipped onto the dogs collar without having a honking big battery hanging
off it (ideally the thing has to be smaller than the dog, which is pretty
tiny). Any suggestions appreciated. TIA.

Flashing LED dog collars have been designed and sold in large quantities.
I happen to know the designer; the whole operation was bought by some
fair-sized company.
Presumedly, since the sales were very good and profitable, then they
would still be on the market.
Try Google first and do not re-invent the wheel if you do not have to.

 

[Don Foreman]

Hi-

I need to build some sort of a flasher to put on my dog's collar- she's the
same color as the carpet and keeps getting stepped on I'm thinking a
3909 flasher running a LED from a coin cell. I haven't kept up to date on
what's available, or if there are any better chips than the LM 3909 out
there. Ideally it should be able to run for a year and be small enough to be
clipped onto the dogs collar without having a honking big battery hanging
off it (ideally the thing has to be smaller than the dog, which is pretty
tiny). Any suggestions appreciated. TIA.

You seem to have gotten lots of smartass unresponsive answers.

An LM3909 would work fine here, if you can find one. They've been
obsolete for some time.

Check out
http://www.flashingblinkylights.com/

I don't know how long these run on a battery, but they're very small
and very inexpensive. You'll probably have to renew the battery
more often than once a year.

 

[Borat]

Instead of the dog?

Thats a bit ruff

 

[ian field]

Or we could go the other way: outfit the dog with a fence charger,
thus quickly teaching people not to step on him...

And when the dog licks itself?

 

[Michael A. Terrell]

And when the dog licks itself?

I'll bet he won't try that a second time. ;-)


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida