Another cunning plan....

[steve_cronin]

Concerning boat alarms for swingers (NO Not Monty again but swinging moorings) and those leaving their boats unattended in "undesireable" locations

First see :- RSpares

Now this runs on 9vdc so a 12v adaptor is simple, then connected to a mobile phone - your old one with a PAYG SIM and again running on a 12volt adapter - you probably replaced it because the battery was U/S and away we go. Someone breaks in to the boat and you get a call on your existing mobile. You will need good batteries or Solars and/or a wind genny of course.

Ok a bit of a lash up but it better than nothing - and look how little the outlay is.

Steve Cronin

 

[bruce]

no turnips?...

 

[simonfraser]

so the alarm goes at 8pm, u jump in your car, get the dinghy out, row to the mooring like mad, & find ?????
why bother ???

 

[fireball]

Because not only does it give you a call on the mobile, it also sounds an alarm in the boat ... and if you know of someone in the vicinity then you might get someone to the scene in time ... and if not, then there are harbour patrols or police that can be contacted .... depends how much you value your boat and what the risk of a breakin is...

 

[VicMallows]

How are you planning to interface this to the mobile on the boat??

Vic

 

[Howardnp]

If you are going to do this you might want to try Rob Slator, email at robslator@robslator.freeserve.co.uk

He recycles old mobile phones and turns them in to trackers to enable you to find your stolen boat car etc. It can also be used as an entry alarm that sends a txt to you when your valuables are disappearing... don't comment about being too late bt then etc!

They run off 12 volts and cost about the price (or a bit less) of the gizmo advertised above.

 

[Mirelle]

It looks interesting. I'll follow this thread.

 

[Anonymous]

This isn't going to work unless I am missing something? The autodial unit is designed to interface to a landline PSTN, not a mobile phone. How are you going to connect the PIR to the mobile?

 

[pvb]

Detail, mere detail....

/forums/images/graemlins/wink.gif

 

[VicMallows]

Ah! but it is possible.............

Around 1969 I worked during vacations for a local company that made digitising tablets for draughtsmen (sort of thing you'd use today to digitise a chart)

As an output printer, they modified IBM Selectric typewriters by fitting solenoids to pull the keys down. Fortunately they only needed numeric plus a few punctuations.
Oh, and the A/D conversion was done purely by relays and resistors.

So:..... many mobiles will dial a preselected number by a long press on one button. All we need is a solenoid to press the button (suggest use 5 since in the middle).

Vic /forums/images/graemlins/tongue.gif

 

[Anonymous]

Funny you should say that - I did a paper design for a similar thing to turn a scientific calculator into a programmable one in about 1974 or 1975! Never got around to making it tho', too busy with my studies, or, more likely, whatever.

 

[steve_cronin]

Ahh yes....

but such interfaces are available. A neighbour who designs and makes PA alarms and help buttons, wired to mobiles, for the elderly, tells me that he can adapt one of his units.

However, using a voice dialling phone set to auto and with the sound of the alarm klaxon input to dial my mobile should do the trick don't you think?

Steve Cronin

 

[Anonymous]

Re: Ahh yes....

[ QUOTE ]
However, using a voice dialling phone set to auto and with the sound of the alarm klaxon input to dial my mobile should do the trick don't you think?

[/ QUOTE ]It doesn't fill me with much enthusiasm, honestly /forums/images/graemlins/smile.gif

 

[Ships_Cat]

Re: Ahh yes....

Or you could use a Fixed Cellular Terminal to plug the dialler into, like one of these http://www.ericsson.com/products/hp/Fixed_Cellular_Terminals_pa.shtml which is what we use (but not for an alarm though).

They mimic the PSTN so you can plug ordinary faxes, telephone receivers, etc into them. Starting to get a bit expensive though.

John

 

[steve_cronin]

Re: Ahh yes....

It's cheap and it does have the added advantage that one can secreet the phone somewhere not too obvious and hear the sounds made by the burglars like " your dad wants a new VHF for the Maid of Scarborough don't he Vincent"

 

[steve_cronin]

Re: Ahh yes....

How about this:- Nokia 22

it runs on 12VDC and only requires a SIM card not a full mobile phone.

Steve Cronin

 

[VicMallows]

Re: Ahh yes....

Have you found a (even aproximate) price anywhere?

Vic

 

[Anonymous]

Re: Ahh yes....

That's good Steve /forums/images/graemlins/smile.gif You can give each crew member their own extension phone as well!

Seriously though, I looked at a couple of mobile-based alarms some months ago and came to the conclusion that before spending money on them I'd be better spending money making it less attractive to break into my boat. That opens a whole field - invisible marking, security lighting, proximity alarms, careful mooring,....