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

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?

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

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?
>
>

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

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?
>
>

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

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?
>
>

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

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.

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

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.

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

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.

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

"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.
--

Ray O
(correct punctuation to reply)

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

"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.
--

Ray O
(correct punctuation to reply)

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

"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.
--

Ray O
(correct punctuation to reply)

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

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...

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

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...

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

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...

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

In article <Z9sxi.58$A57.2@trnddc04>, GoMavs <Mav@ericks.com> wrote:
>a viper.. not the car alarm, but a real life viper...

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."

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

In article <Z9sxi.58$A57.2@trnddc04>, GoMavs <Mav@ericks.com> wrote:
>a viper.. not the car alarm, but a real life viper...

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."

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

In article <Z9sxi.58$A57.2@trnddc04>, GoMavs <Mav@ericks.com> wrote:
>a viper.. not the car alarm, but a real life viper...

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."

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

On 2007-08-17 18:59:08 -0700, Hachiroku ãƒ�ãƒ�ãƒã‚¯ <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...

Too bad it wasn't an option.

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

On 2007-08-17 18:59:08 -0700, Hachiroku ãƒ�ãƒ�ãƒã‚¯ <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...

Too bad it wasn't an option.

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

On 2007-08-17 18:59:08 -0700, Hachiroku ãƒ�ãƒ�ãƒã‚¯ <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...

Too bad it wasn't an option.

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

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.

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

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.

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

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.

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

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

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

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

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

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

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

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.

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

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.

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

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.

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

"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

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

"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

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

"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

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

"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?
>
>

Smoke with the windows up so the inside stinks to high heaven. Oops, you do
that now don't you!

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

"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?
>
>

Smoke with the windows up so the inside stinks to high heaven. Oops, you do
that now don't you!

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

"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?
>
>

Smoke with the windows up so the inside stinks to high heaven. Oops, you do
that now don't you!

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

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

I have a friend that has a pitbull/Akita mix, but he won't give her up...

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

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

I have a friend that has a pitbull/Akita mix, but he won't give her up...

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

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

I have a friend that has a pitbull/Akita mix, but he won't give her up...

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

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.


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.

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

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.


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.

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

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.


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.