pet collar radio transmitter

[Bill F]

I purchased a radio transmitter controlled dog door not long ago.

http://hitecpet.com/autpetdoorfo.html

Problem is, I occasionally forget to take the collar off when I take the
dog to a park where he goes in the water. I've now gone through three
of these $40 items. Naturally I'd like to be able build the transmitter
myself. First, it stands to reason I'd need to know the frequency it
receives on. I have no e.e. background but have repaired electrical
devices. Is this a possible and/or practical endeavor?

Any recommendations would be appreciated. Thanks

 

[Joerg]

Hello Bill,

Assuming you mean collar, they do make water proof ones. But beware,
this can seriously burn the dogs neck if it accidentally starts shocking
continuously. There was a report about a sad case where someone hadn't
turned it off and the dog was in electrocution until battery depletion,
it almost died.

Ours works at 27MHz. But please make it a habit to turn it off and take
it off.

Regards, Joerg

http://www.analogconsultants.com

 

[Don Bruder]

In article <BKkzc.85636$8D5.6751@newssvr25.news.prodigy.com>,
Joerg <notthisjoergsch@removethispacbell.net> wrote:

Hello Bill,

Assuming you mean collar, they do make water proof ones. But beware,
this can seriously burn the dogs neck if it accidentally starts shocking

From his original post, it doesn't sound like a shock collar he's
talking about. It sounded more like some sort of electronic "key collar"
(I'm imagining something a bit like a garage door control transmitter
that constantly transmits a very low strength signal that only a really
close receiver can pick up) that trips the latch on the doggie-door so
the dog can come and go freely, but the next door neighbor's cat, the
squirrel, the skinny burglar, and so on are kept out. (Why am I getting
a cartoon image of the dog, sans collar, spotting neighbor cat through
the living room window, taking off for the doggie door at a dead run,
and doing a classic cartoon <"SPLANG!"> against the unmoving
doggie-door? That would be one reason to not get in the habit of taking
that key-collar off! )

I'm thinking that if this thing is an RF unit (Haven't heard whether it
is or not), the quickest fix would be to just pot the whole circuit
board, leaving the battery connection exposed. Simplest/cheapest way I
can think of to do that would be to melt some (relatively
high-temperature, so that it doesn't start dribbling out if there's a
heatwave) wax and pour it into the casing until it's full, leaving only
the battery compartment/connectors to be able to get wet. Hot-melt glue
would likely work just as well.

Of course, if it isn't an RF transmitter, that idea is probably garbage.

--
Don Bruder - dakidd@sonic.net - New Email policy in effect as of Feb. 21, 2004.
I respond to Email as quick as humanly possible. If you Email me and get no
response, see <http://www.sonic.net/~dakidd/main/contact.html> Short
form: I'm trashing EVERYTHING that doesn't contain a password in the subject.

 

[Jamie]

well, depending on if the unit is IR, Sonic or RF ?
if its RF then Plastic Wrap it and seal it with
water proof tap.


Bill F wrote:

I purchased a radio transmitter controlled dog door not long ago.

http://hitecpet.com/autpetdoorfo.html

Problem is, I occasionally forget to take the collar off when I take the
dog to a park where he goes in the water. I've now gone through three
of these $40 items. Naturally I'd like to be able build the transmitter
myself. First, it stands to reason I'd need to know the frequency it
receives on. I have no e.e. background but have repaired electrical
devices. Is this a possible and/or practical endeavor?

Any recommendations would be appreciated. Thanks

 

[Jan Panteltje]

**** Post for FREE via your newsreader at post.usenet.com ****

On a sunny day (Mon, 14 Jun 2004 16:53:53 GMT) it happened Joerg
<notthisjoergsch@removethispacbell.net> wrote in
<BKkzc.85636$8D5.6751@newssvr25.news.prodigy.com>:

Hello Bill,

Assuming you mean collar, they do make water proof ones. But beware,
this can seriously burn the dogs neck if it accidentally starts shocking
continuously. There was a report about a sad case where someone hadn't
turned it off and the dog was in electrocution until battery depletion,
it almost died.

Ours works at 27MHz. But please make it a habit to turn it off and take
it off.

Regards, Joerg

http://www.analogconsultants.com
How far are you with dog bark voice recognition ;-)?

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[Joerg]

Hi Jan,

Actually I can often tell with both of our dogs why they are barking.
They have many "modes", including fire engine mode if one comes along.
Aaaroooooooieee.... the Rottie Mix can hold the tune for more than five
seconds. Even the wild foxes around us are amazed.

Regards, Joerg

http://www.analogconsultants.com

 

[Jamie]

Don Bruder wrote:

In article <BKkzc.85636$8D5.6751@newssvr25.news.prodigy.com>,
Joerg <notthisjoergsch@removethispacbell.net> wrote:


Hello Bill,

Assuming you mean collar, they do make water proof ones. But beware,
this can seriously burn the dogs neck if it accidentally starts shocking


From his original post, it doesn't sound like a shock collar he's
talking about. It sounded more like some sort of electronic "key collar"
(I'm imagining something a bit like a garage door control transmitter
that constantly transmits a very low strength signal that only a really
close receiver can pick up) that trips the latch on the doggie-door so
the dog can come and go freely, but the next door neighbor's cat, the
squirrel, the skinny burglar, and so on are kept out. (Why am I getting
a cartoon image of the dog, sans collar, spotting neighbor cat through
the living room window, taking off for the doggie door at a dead run,
and doing a classic cartoon <"SPLANG!"> against the unmoving
doggie-door? That would be one reason to not get in the habit of taking
that key-collar off! )

I'm thinking that if this thing is an RF unit (Haven't heard whether it
is or not), the quickest fix would be to just pot the whole circuit
board, leaving the battery connection exposed. Simplest/cheapest way I
can think of to do that would be to melt some (relatively
high-temperature, so that it doesn't start dribbling out if there's a
heatwave) wax and pour it into the casing until it's full, leaving only
the battery compartment/connectors to be able to get wet. Hot-melt glue
would likely work just as well.
Now to teach the dog to plug him self in at night so that the

batteries will stay charged!
P.S.
it is a good idea btw.

Of course, if it isn't an RF transmitter, that idea is probably garbage.

 

[Rich Grise]

"Bill F" <linguafr@sbcglobal.net> wrote in message
news:40CD5AD0.5060500@sbcglobal.net...

I purchased a radio transmitter controlled dog door not long ago.

http://hitecpet.com/autpetdoorfo.html

Problem is, I occasionally forget to take the collar off when I take the
dog to a park where he goes in the water. I've now gone through three
of these $40 items. Naturally I'd like to be able build the transmitter
myself. First, it stands to reason I'd need to know the frequency it
receives on. I have no e.e. background but have repaired electrical
devices. Is this a possible and/or practical endeavor?

Any recommendations would be appreciated. Thanks

You should replace the whole system with something that uses a passive

RFID-type tag on the collar, like the things at stores. No batteries
or electronics, so you can leave it on all the time.

Good Luck!
Rich