OK, ladies and gentlemen, put on your Thinking Caps...

  • Thread starter Hachiroku $B%O%A%m%/(B
  • Start date
H

Hachiroku $B%O%A%m%/(B

Guest
And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing a
real alarm, but I want something.

Honking the horn and flashing the flashers would be good enough. I want
the horn to 'beep', so a flasher unit and a relay or two would be good.

There's two ways to set the thing up:

Put something like a key switch under the fender, turn on when leaving,
turn off when using the car.

Or, a little more sophisticaed: put a switch inside the car. Now, this
would mean triggering the 'alarm' when getting into the car, something I
don't want to do at 1 AM when I'm leaving on my 'paper route'. So, some
kind of delay would be good. I was thinking a capacitor between the hot
line and the 1st relay, so the cap charges and when it reaches charged it
triggers the relay and starts the flasher.

But, I need a hint what size cap to use, and how to wire it into the relay
so that it charges before setting off the horn, maybe 20 seconds is good.

Of course, we could get REAL sophisticated and use the ol' venerable 555
timer, but that's more involved than I want to make it.

Any ideas?
 
a viper.. not the car alarm, but a real life viper...



"Hachiroku ????" <Trueno@AE86.gts> wrote in message
news:p2sxi.1330$563.924@trndny08...
And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing a
real alarm, but I want something.

Honking the horn and flashing the flashers would be good enough. I want
the horn to 'beep', so a flasher unit and a relay or two would be good.

There's two ways to set the thing up:

Put something like a key switch under the fender, turn on when leaving,
turn off when using the car.

Or, a little more sophisticaed: put a switch inside the car. Now, this
would mean triggering the 'alarm' when getting into the car, something I
don't want to do at 1 AM when I'm leaving on my 'paper route'. So, some
kind of delay would be good. I was thinking a capacitor between the hot
line and the 1st relay, so the cap charges and when it reaches charged it
triggers the relay and starts the flasher.

But, I need a hint what size cap to use, and how to wire it into the relay
so that it charges before setting off the horn, maybe 20 seconds is good.

Of course, we could get REAL sophisticated and use the ol' venerable 555
timer, but that's more involved than I want to make it.

Any ideas?
Click to expand...
 
On 2007-08-17 18:44:25 -0700, "GoMavs" <Mav@ericks.com> said:

a viper.. not the car alarm, but a real life viper...
Click to expand...
OR...the system portrayed in the opening scenes of Robocop II.
 
"Hachiroku ????" <Trueno@AE86.gts> wrote in message
news:p2sxi.1330$563.924@trndny08...
And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing a
real alarm, but I want something.

Honking the horn and flashing the flashers would be good enough. I want
the horn to 'beep', so a flasher unit and a relay or two would be good.

There's two ways to set the thing up:

Put something like a key switch under the fender, turn on when leaving,
turn off when using the car.

Or, a little more sophisticaed: put a switch inside the car. Now, this
would mean triggering the 'alarm' when getting into the car, something I
don't want to do at 1 AM when I'm leaving on my 'paper route'. So, some
kind of delay would be good. I was thinking a capacitor between the hot
line and the 1st relay, so the cap charges and when it reaches charged it
triggers the relay and starts the flasher.

But, I need a hint what size cap to use, and how to wire it into the relay
so that it charges before setting off the horn, maybe 20 seconds is good.

Of course, we could get REAL sophisticated and use the ol' venerable 555
timer, but that's more involved than I want to make it.

Any ideas?

Go to K-Mart or Wal-Mart and get a cheapo alarm.
Click to expand...
--

Ray O
(correct punctuation to reply)
 
On Fri, 17 Aug 2007 18:51:56 -0700, witfal wrote:

On 2007-08-17 18:44:25 -0700, "GoMavs" <Mav@ericks.com> said:

a viper.. not the car alarm, but a real life viper...

OR...the system portrayed in the opening scenes of Robocop II.
Click to expand...

Believe it or not, this was EXACTLY what I was watching back in 1991 on
HBO when my Hachiroku got stolen the first time...
 
In article <Z9sxi.58$A57.2@trnddc04>, GoMavs <Mav@ericks.com> wrote:
a viper.. not the car alarm, but a real life viper...
Click to expand...
I agree. Car alarms are basically ineffective, because they false constantly
and so they get ignored. Even if _your_ alarm is perfect, if it goes off in
the supermarket parking lot nobody will even bother to look at the car, because
they are all so used to false alarms all the time.

BUT, a thirty-foot anaconda will definitely be a theft-stopping wonder, if not
deterring any theft attempts in the first place. Everybody should have them.
You could sell them with the slogan "Get your Honda An Anaconda." If you use
that slogan, though, I want royalties.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."
 
On 2007-08-17 18:59:08 -0700, Hachiroku ハチロク <Trueno@AE86.gts> said:

On Fri, 17 Aug 2007 18:51:56 -0700, witfal wrote:

On 2007-08-17 18:44:25 -0700, "GoMavs" <Mav@ericks.com> said:

a viper.. not the car alarm, but a real life viper...

OR...the system portrayed in the opening scenes of Robocop II.


Believe it or not, this was EXACTLY what I was watching back in 1991 on
HBO when my Hachiroku got stolen the first time...
Click to expand...
Too bad it wasn't an option.
 
Why not buy those battery operated blinking LEDs that pretend to be a
viper on standby. Putting a switch under the fender may have some
drawbacks during winter season. I am thinking you do not like those
metal bars you put on the steering wheel and brake pedals.
 
On Sat, 18 Aug 2007 01:36:47 GMT,
=?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno@AE86.gts>
wrote:

And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing a
real alarm, but I want something.
Click to expand...
**Trunk monkey and a Louisville Slugger.

kaboomie
 
Hachiroku wrote:

And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing a
real alarm, but I want something.

Honking the horn and flashing the flashers would be good enough. I want
the horn to 'beep', so a flasher unit and a relay or two would be good.

There's two ways to set the thing up:

Put something like a key switch under the fender, turn on when leaving,
turn off when using the car.

Or, a little more sophisticaed: put a switch inside the car. Now, this
would mean triggering the 'alarm' when getting into the car, something I
don't want to do at 1 AM when I'm leaving on my 'paper route'. So, some
kind of delay would be good. I was thinking a capacitor between the hot
line and the 1st relay, so the cap charges and when it reaches charged it
triggers the relay and starts the flasher.

But, I need a hint what size cap to use, and how to wire it into the relay
so that it charges before setting off the horn, maybe 20 seconds is good.

Of course, we could get REAL sophisticated and use the ol' venerable 555
timer, but that's more involved than I want to make it.
Click to expand...
A 555 circuit is sophisticated???

You can buy time delay relays on the surplus market, but driving a
regular relay directly from a capacitor takes a huge capacitor because
the load resistance is so low, and time delay is proportional to R x
C. I'd use a 555 or quad comparator (339?) for everything, and you
should be able to make it activate automatically when you shut off the
key. In Nogales, USA, vehicle fleet owners favor hidden kill switches
to stop thieves from Nogales, Mexico.

Have you checked www.epanorama.net? Lots of electronics links there.
 
"Hachiroku $B%O%A%m%/(B" wrote:
And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing a
real alarm, but I want something.
Click to expand...
How about a Doberman? A friend of mine finds no need to even lock his van
when his Doberman is in it. It won't even let me into the van without him
there even though it knows that I'm ok. Nobody gets into the van unless
they have either a bullet or a tranquilizer dart.

Eric
 
"Hachiroku ????" <Trueno@AE86.gts> wrote in message
news:p2sxi.1330$563.924@trndny08...
And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing a
real alarm, but I want something.

Honking the horn and flashing the flashers would be good enough. I want
the horn to 'beep', so a flasher unit and a relay or two would be good.

There's two ways to set the thing up:

Put something like a key switch under the fender, turn on when leaving,
turn off when using the car.

Or, a little more sophisticaed: put a switch inside the car. Now, this
would mean triggering the 'alarm' when getting into the car, something I
don't want to do at 1 AM when I'm leaving on my 'paper route'. So, some
kind of delay would be good. I was thinking a capacitor between the hot
line and the 1st relay, so the cap charges and when it reaches charged it
triggers the relay and starts the flasher.

But, I need a hint what size cap to use, and how to wire it into the relay
so that it charges before setting off the horn, maybe 20 seconds is good.

Of course, we could get REAL sophisticated and use the ol' venerable 555
timer, but that's more involved than I want to make it.

Any ideas?
Click to expand...
Smoke with the windows up so the inside stinks to high heaven. Oops, you do
that now don't you!
 
On Sat, 18 Aug 2007 00:45:45 -0700, Eric wrote:

"Hachiroku $B%O%A%m%/(B" wrote:

And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing
a real alarm, but I want something.


How about a Doberman? A friend of mine finds no need to even lock his van
when his Doberman is in it. It won't even let me into the van without him
there even though it knows that I'm ok. Nobody gets into the van unless
they have either a bullet or a tranquilizer dart.

Eric
Click to expand...
I have a friend that has a pitbull/Akita mix, but he won't give her up...
 
On Fri, 17 Aug 2007 19:40:19 -0700, larry moe 'n curly wrote:

Hachiroku wrote:

And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing
a real alarm, but I want something.

Honking the horn and flashing the flashers would be good enough. I want
the horn to 'beep', so a flasher unit and a relay or two would be good.

There's two ways to set the thing up:

Put something like a key switch under the fender, turn on when leaving,
turn off when using the car.

Or, a little more sophisticaed: put a switch inside the car. Now, this
would mean triggering the 'alarm' when getting into the car, something I
don't want to do at 1 AM when I'm leaving on my 'paper route'. So, some
kind of delay would be good. I was thinking a capacitor between the hot
line and the 1st relay, so the cap charges and when it reaches charged
it triggers the relay and starts the flasher.

But, I need a hint what size cap to use, and how to wire it into the
relay so that it charges before setting off the horn, maybe 20 seconds
is good.

Of course, we could get REAL sophisticated and use the ol' venerable 555
timer, but that's more involved than I want to make it.

A 555 circuit is sophisticated???

You can buy time delay relays on the surplus market, but driving a regular
relay directly from a capacitor takes a huge capacitor because the load
resistance is so low, and time delay is proportional to R x C. I'd use a
555 or quad comparator (339?) for everything, and you should be able to
make it activate automatically when you shut off the key. In Nogales,
USA, vehicle fleet owners favor hidden kill switches to stop thieves from
Nogales, Mexico.

Have you checked www.epanorama.net? Lots of electronics links there.
Click to expand...

Yup. I did this after I posted this post:

http://home.maine.rr.com/randylinscott/jan20.htm

You know, I worked in Andover MA 27 years ago, in a building shared with
Raytheon. A lot of cars there, and there was a rash of burglaries in the
parking lot.

A guy I worked with who was really smart came up with a circuit very, very
similar to this one. I installed it in my '80 Corolla, took an end
connector from one of the units I was working on, put a key switch in it,
and a plastic cap and mounted it in the fender well. It worked quite well.


That's why I had asked about a 555 CKT.
 
On Sat, 18 Aug 2007 02:30:28 +0000, kaboom wrote:

On Sat, 18 Aug 2007 01:36:47 GMT,
=?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno@AE86.gts
wrote:

And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing
a real alarm, but I want something.

**Trunk monkey and a Louisville Slugger.

kaboomie
Click to expand...

Ah, yes. The trunk monkey!!!

Too high maintenance, though. Can they be litter box trained?

http://www.trunkmonkey.com/
 
Eric wrote:
"Hachiroku $B%O%A%m%/(B" wrote:

And come up with a Cheap-Ass alarm.

On the Mazda, I don't want to go to the trouble or expense of installing a
real alarm, but I want something.



How about a Doberman? A friend of mine finds no need to even lock his van
when his Doberman is in it. It won't even let me into the van without him
there even though it knows that I'm ok. Nobody gets into the van unless
they have either a bullet or a tranquilizer dart.

Eric
Click to expand...

Our family had Dobermans for years and they are easily bribed by food
(as is just about any dawg). In fact, the last one (I swear) would
point to the loot...

JT
 
On 2007-08-18 09:38:41 -0700, Grumpy AuContraire
<Grumpy@ExtraGrumpyville.com> said:
Our family had Dobermans for years and they are easily bribed by food
(as is just about any dawg). In fact, the last one (I swear) would
point to the loot...
Click to expand...
But most people don't know that, or won't take a chance.

I have a Boxer. He sounds real tough when someone knocks on the door,
and goes nuts when they ring the doorbell. But let someone in, and
it's, "Give me a biscuit, and I'll show you the safe."

That said, those who don't know him are very intimidated on the other
side of the door. Power perceived is power achieved.
 
witfal wrote:
On 2007-08-18 09:38:41 -0700, Grumpy AuContraire
Grumpy@ExtraGrumpyville.com> said:
Our family had Dobermans for years and they are easily bribed by food
(as is just about any dawg). In fact, the last one (I swear) would
point to the loot...

But most people don't know that, or won't take a chance.

I have a Boxer. He sounds real tough when someone knocks on the door,
and goes nuts when they ring the doorbell. But let someone in, and
it's, "Give me a biscuit, and I'll show you the safe."

That said, those who don't know him are very intimidated on the other
side of the door. Power perceived is power achieved.
Click to expand...
Had it not been for my aversion to sticking ANYTHING on my Corvette, I
always kinda wanted that bumper sticker "The keys to my car are on the
front seat, next to my Rottweiler"

My Rotties always were partial to riding in the car. Last one I had
could get into the back seat of the LeBaron convertible without opening
the door or touching the side. One leap and he was there. Leave him
out in the parking lot sitting in it with the top down. He'd smile at
folks and they wouldn't come near or even park by my car.<g>

He was a lover, not a fighter, but at 110 lbs nobody knew for sure.
 
On 2007-08-18 13:23:48 -0700, Unquestionably Confused
<Puzzled2@ameritech.net> said:

He was a lover, not a fighter, but at 110 lbs nobody knew for sure.
Click to expand...
Or wants to.

We used to own three Mastiffs. The male topped 217 pounds.

They were as gentle as kittens, but were given a wide berth when we
walked them.
 
On Sat, 18 Aug 2007 02:26:37 -0000
EdV <systmengr@hotmail.com> wrote:

Why not buy those battery operated blinking LEDs that pretend to be a
viper on standby. Putting a switch under the fender may have some
drawbacks during winter season. I am thinking you do not like those
metal bars you put on the steering wheel and brake pedals.
Click to expand...
Well, they're neat looking and all, but take all of about 30 seconds to
defeat.

If someone knows what they are doing, and really wants your car, they
will have it. It might make more sense to leave the doors unlocked and
the keys in the ignition. That way, the kids joyriding won't bust a
window and your steering column to go for a ride, and they might even
think enough of you to not torch the car when they are done...


--
Joe - Registered Linux User #449481

"Hate is baggage, life is too short to go around pissed off all the
time..."
- Danny, American History X
 
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