Phone dialler...
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Posts: 46,084
Hello stampers,
Can anybody help me with a phone dialer for a dead simple alarm system. We have a PIR hooked to a bs2, and simply want to dial out thru some sort of dialer if·a stamp pin stays high for more than a preset period. I can do it easily with a standard modem, but I'm sure there must be a cheaper alternative around somewhere. I know we can do the dtmf stuff and dial out but would prefer to use an approved product.
Chris
Can anybody help me with a phone dialer for a dead simple alarm system. We have a PIR hooked to a bs2, and simply want to dial out thru some sort of dialer if·a stamp pin stays high for more than a preset period. I can do it easily with a standard modem, but I'm sure there must be a cheaper alternative around somewhere. I know we can do the dtmf stuff and dial out but would prefer to use an approved product.
Chris
Comments
>Hello stampers,
>Can anybody help me with a phone dialer for a dead simple alarm system. We
>have a PIR hooked to a bs2, and simply want to dial out thru some sort of
>dialer if a stamp pin stays high for more than a preset period. I can do
>it easily with a standard modem, but I'm sure there must be a cheaper
>alternative around somewhere. I know we can do the dtmf stuff and dial out
>but would prefer to use an approved product.
>Chris
Hi Chris -
The cheapest alternative is to hack an old external modem. Short of that
you may opt to use one of the Cermetek modems (CH1786 or similar). Parallax
offers the CH1786 in an App Kit on their website (cat. no. #27947). Their web
site can be found here [noparse][[/noparse] http://www.parallaxinc.com ]. Check the web site for
details. I hope that helps.
Regards,
Bruce Bates
phone line thru a transformer. Throw in a couple of zeners to protect
the stamp from ring voltage. A 600 ohm - 600 ohm audio coupling
transformer should do the trick. The phone line will need to go off-
hook before the number is dialed. This switching can be done by a
reed relay, if the relay is small enough a stamp pin could directly
drive it. (there is an example of this on the Nuts&Volts website:
www.nutsvolts.com, go to where the stamp stuff is in their FTP area)
That is as bare bones as it gets.
It would be desirable for the stamp to confirm the presence of dial
tone before dials, it should recognize when it dials into a busy
signal. (hang up, try again later) The stamp should also recognize
the ringback tone, then wait for the phone to be answered. There
would need to be a counter, ie: after a predetermined number of rings
(no answer) the stamp hangs up.
These are the three conditions the stamp would have to recognize.
A-no dial tone
B-busy signal
C-ring limit exceeded, nobody home.
Once the stamp determines that the call it is attempting to place
will not go thru you might want to make it:
A- retry the same number
B- call another number
The stamp could do most of this work, it doesn't seem that that much
would be required as far as additional components go. The more of
these tasks you allow external components to do, the more the stamp
will be freed up. An interesting project. Good Luck.
Rich
--- In basicstamps@y..., "Chris Anderson" <fes@g...> wrote:
> Hello stampers,
> Can anybody help me with a phone dialer for a dead simple alarm
system. We have a PIR hooked to a bs2, and simply want to dial out
thru some sort of dialer if a stamp pin stays high for more than a
preset period. I can do it easily with a standard modem, but I'm sure
there must be a cheaper alternative around somewhere. I know we can
do the dtmf stuff and dial out but would prefer to use an approved
product.
> Chris
· Look at the Parallax cermetek kit.· it works well for your app as it is a simple modem module for interface to the bs2.·
Mike Mocenter
Original Message
From: Chris Anderson
To: basicstamps@yahoogroups.com
Sent: Wednesday, May 02, 2001 12:31 AM
Subject: [noparse][[/noparse]basicstamps] Phone dialler...
Hello stampers,
Can anybody help me with a phone dialer for a dead simple alarm system. We have a PIR hooked to a bs2, and simply want to dial out thru some sort of dialer if·a stamp pin stays high for more than a preset period. I can do it easily with a standard modem, but I'm sure there must be a cheaper alternative around somewhere. I know we can do the dtmf stuff and dial out but would prefer to use an approved product.
Chris
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Jameco is one of them.
Original Message
> The stamp will dial the phone using DTMFOUT. Couple the stamp to the
> phone line thru a transformer. Throw in a couple of zeners to protect
> the stamp from ring voltage. A 600 ohm - 600 ohm audio coupling
> transformer should do the trick.
buy one (you can see all the insides already) and connect the Stamp to the
microphone -- maybe with a transformer. Then use a transistor to switch the
hook and instant phone interface for $8... hmmm.. maybe that's a project of
the month.
Years ago I had TRS-80 MIII and I hooked the unused cassette interface to a
phone along with a VS-1 speech synthesizer. I'd detect the "ring" from the
cheap phone on the audio input of the cassette port. The cassette relay
would switch the phone on and the cassette recorder on. I'd emit a message
from the synthesizer (coupled with a transformer to the phone) and then
record until the line went quiet (again with the cassette input).
Of course, it would log the call's time/duration, etc.
I hooked the thing up and tested it a few times and went to teach a night
class. When I got back, the thing had like 250 messages on it! Rats, I
thought... must be noise. Then the next day my girlfriend called (I was
single back then) and said, "Who was that awful man answering your phone? I
called and called and I never could understand what he was saying. I even
got the operator to call and she couldn't understand it either. I denied
everything of course and tore it all down. I couldn't imagine she had called
almost 250 times!
Regards,
Al Williams
AWC
* 8 channels of PWM: http://www.al-williams.com/awce/pak5.htm
>
Original Message
> From: iceninevt@y... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=F6CUjFmNN7pAOLFCqNRAUTtxdrnr4d1ZEkiDs3JoGiIDYuafdwXJXqtHkx0TxIdGRfVRuAxlP0b3t1TtaQ]iceninevt@y...[/url
> Sent: Wednesday, May 02, 2001 10:16 AM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Re: Phone dialler...
>
>
> The stamp will dial the phone using DTMFOUT. Couple the stamp to the
> phone line thru a transformer. Throw in a couple of zeners to protect
> the stamp from ring voltage. A 600 ohm - 600 ohm audio coupling
> transformer should do the trick. The phone line will need to go off-
> hook before the number is dialed. This switching can be done by a
> reed relay, if the relay is small enough a stamp pin could directly
> drive it. (there is an example of this on the Nuts&Volts website:
> www.nutsvolts.com, go to where the stamp stuff is in their FTP area)
>
> That is as bare bones as it gets.
>
> It would be desirable for the stamp to confirm the presence of dial
> tone before dials, it should recognize when it dials into a busy
> signal. (hang up, try again later) The stamp should also recognize
> the ringback tone, then wait for the phone to be answered. There
> would need to be a counter, ie: after a predetermined number of rings
> (no answer) the stamp hangs up.
>
> These are the three conditions the stamp would have to recognize.
> A-no dial tone
> B-busy signal
> C-ring limit exceeded, nobody home.
>
> Once the stamp determines that the call it is attempting to place
> will not go thru you might want to make it:
>
> A- retry the same number
> B- call another number
>
> The stamp could do most of this work, it doesn't seem that that much
> would be required as far as additional components go. The more of
> these tasks you allow external components to do, the more the stamp
> will be freed up. An interesting project. Good Luck.
>
> Rich
>
>
> --- In basicstamps@y..., "Chris Anderson" <fes@g...> wrote:
> > Hello stampers,
> > Can anybody help me with a phone dialer for a dead simple alarm
> system. We have a PIR hooked to a bs2, and simply want to dial out
> thru some sort of dialer if a stamp pin stays high for more than a
> preset period. I can do it easily with a standard modem, but I'm sure
> there must be a cheaper alternative around somewhere. I know we can
> do the dtmf stuff and dial out but would prefer to use an approved
> product.
> > Chris
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
I made the project in the basic stamp manual(about a year ago)
It worked great
I had the stamp connect the phone line with 2 relays(seperate power supply)
then it would call my pager and send me codes
like "1010" meant the front door was opened
and "1111" meant the back door was opened
I also had some motion sensors hooked up too
I had like 6 different codes(for six different senors)
most of the time it took around a minute for
the door to be opened till i got the page on my pager
I have scanned the board for you to see(152K)
http://64.255.5.198/modem.jpg
I didn't spend to much to build it(maybe $15 or $20)
i bought some parts at radio shack and ordered from digikey and jameco(i
think)
I know i bought 3 or 4 of each part(in case i was going to make a couple
more)
also I have the code somewhere and can answer more questions
I have since moved and all my parts are in a box
kevin
At 5/2/2001 Wednesday 12:31 AM, Chris Anderson promulgated:
>Hello stampers,
>Can anybody help me with a phone dialer for a dead simple alarm system. We
>have a PIR hooked to a bs2, and simply want to dial out thru some sort of
>dialer if a stamp pin stays high for more than a preset period. I can do
>it easily with a standard modem, but I'm sure there must be a cheaper
>alternative around somewhere. I know we can do the dtmf stuff and dial out
>but would prefer to use an approved product.
>Chris
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
fes@gateway.net.au writes:
have a PIR hooked to a bs2, and simply want to dial out thru some sort of
dialer if a stamp pin stays high for more than a preset period. I can do it
easily with a standard modem, but I'm sure there must be a cheaper
alternative around somewhere. I know we can do the dtmf stuff and dial out
but would prefer to use an approved product.
There's the rub: "an approved product." ·The FCC gets testy about things
connected to the telephone system. ·By using a commercial modem, you've got a
pre-approved DAA built into it. ·The Cermetek modem module is a nice way to
handle this in a very small package.
[/font]
Thanks for your help, and to all the other replies.
As I am thinking of a commercial application, the approval part is fairly important.
The Cermetek looks good, but a bit pricey with the way our $ is compared to yours. I may still buy one though as I have a few other applications for them.
Once again thanks.
Also, do you have any quick code for bs2p40 to read into an 8 byte array from a ds1990a ibutton. I have been doing this with a bs2sx and a line driver and it works fine, it also does the ds1996 mem button easily, but I would like to keep it to 1 i/o. I heard that you spent some time at Dallas with them, and I can't buy Nuts and Volts here until they are 6 months old. DS1996 code would be nice also if you have anything.
Regards, Chris
Original Message
From: jonwms@aol.com
To: basicstamps@yahoogroups.com
Sent: Friday, May 04, 2001 7:13 PM
Subject: Re: [noparse][[/noparse]basicstamps] Phone dialler...
[font=arial,helvetica]In a message dated 5/3/01 10:40:57 PM Central Daylight Time,
fes@gateway.net.au writes:
have a PIR hooked to a bs2, and simply want to dial out thru some sort of
dialer if a stamp pin stays high for more than a preset period. I can do it
easily with a standard modem, but I'm sure there must be a cheaper
alternative around somewhere. I know we can do the dtmf stuff and dial out
but would prefer to use an approved product.
There's the rub: "an approved product." ·The FCC gets testy about things
connected to the telephone system. ·By using a commercial modem, you've got a
pre-approved DAA built into it. ·The Cermetek modem module is a nice way to
handle this in a very small package.
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[/font]
I bought up a lifetime supply of 2400 baud modems that Shreve Systems
has been advertising in N&V for $1 each. Can't beat that. I can't
imagine what kind of deal Shreve got on them, to unload them at that
price. It is the teleport bronze for Macintosh, very well made. (I
paid $130 for one for my Mac, back a few years, when 2400 reigned
supreme!)
Note that Cermetek also has DAA devices, apart from modems. That
would help you meet your approvals at a lower cost than a full modem.
I don't know how Australian phone approvals differ from the U.S. (I
hope it's not like British Telephone!!).
-- regards,
Tracy Allen
electronically monitored ecosystems
mailto:tracy@e...
http://www.emesystems.com
>Jon,
>Thanks for your help, and to all the other replies.
>As I am thinking of a commercial application, the approval part is
>fairly important.
>The Cermetek looks good, but a bit pricey with the way our $ is
>compared to yours. I may still buy one though as I have a few other
>applications for them.
>
>>Can anybody help me with a phone dialer for a dead simple alarm system. We
>>have a PIR hooked to a bs2, and simply want to dial out thru some sort of
>>dialer if a stamp pin stays high for more than a preset period. I can do it
>>easily with a standard modem, but I'm sure there must be a cheaper
>>alternative around somewhere. I know we can do the dtmf stuff and dial out
>>but would prefer to use an approved product.
>>
>There's the rub: "an approved product." The FCC gets testy about things
>connected to the telephone system. By using a commercial modem, you've got a
>pre-approved DAA built into it. The Cermetek modem module is a nice way to
>handle this in a very small package.
for external modems. I've bought three on EBay and haven't paid more
than $10 total, including shipping.
Good luck!
-- Jeff Wallace
-- Add a RTC, EEPROM and an I2C bus to your STAMP with the TimeKeeper!
--{ www.high-techgarage.com }--
--- In basicstamps@y..., "Chris Anderson" <fes@g...> wrote:
> Hello stampers,
> Can anybody help me with a phone dialer for a dead simple alarm
system. We have a PIR hooked to a bs2, and simply want to dial out
thru some sort of dialer if a stamp pin stays high for more than a
preset period. I can do it easily with a standard modem, but I'm sure
there must be a cheaper alternative around somewhere. I know we can
do the dtmf stuff and dial out but would prefer to use an approved
product.
> Chris
2400 would be fine in this application as it only sends a few bytes out to
an alarm monitor, it does'nt really need to receive anything. Also it would
still suit the bs1. I will do some searching..
Many thanks.
Chris
Original Message
From: Tracy Allen <tracy@e...>
To: <basicstamps@yahoogroups.com>
Sent: Saturday, May 05, 2001 12:16 AM
Subject: Re: [noparse][[/noparse]basicstamps] Phone dialler...
> Hi Chris,
> I bought up a lifetime supply of 2400 baud modems that Shreve Systems
> has been advertising in N&V for $1 each. Can't beat that. I can't
> imagine what kind of deal Shreve got on them, to unload them at that
> price. It is the teleport bronze for Macintosh, very well made. (I
> paid $130 for one for my Mac, back a few years, when 2400 reigned
> supreme!)
>
> Note that Cermetek also has DAA devices, apart from modems. That
> would help you meet your approvals at a lower cost than a full modem.
> I don't know how Australian phone approvals differ from the U.S. (I
> hope it's not like British Telephone!!).
>
> -- regards,
> Tracy Allen
> electronically monitored ecosystems
> mailto:tracy@e...
> http://www.emesystems.com
>
>
> >Jon,
> >Thanks for your help, and to all the other replies.
> >As I am thinking of a commercial application, the approval part is
> >fairly important.
> >The Cermetek looks good, but a bit pricey with the way our $ is
> >compared to yours. I may still buy one though as I have a few other
> >applications for them.
> >
> >>Can anybody help me with a phone dialer for a dead simple alarm system.
We
> >>have a PIR hooked to a bs2, and simply want to dial out thru some sort
of
> >>dialer if a stamp pin stays high for more than a preset period. I can do
it
> >>easily with a standard modem, but I'm sure there must be a cheaper
> >>alternative around somewhere. I know we can do the dtmf stuff and dial
out
> >>but would prefer to use an approved product.
> >>
> >There's the rub: "an approved product." The FCC gets testy about things
> >connected to the telephone system. By using a commercial modem, you've
got a
> >pre-approved DAA built into it. The Cermetek modem module is a nice way
to
> >handle this in a very small package.
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>