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Re: Non-Comfort Alarms
- To: ukha_d@xxxxxxx
- Subject: Re: Non-Comfort Alarms
- From: James Derrick <james@xxxxxxx>
- Date: Wed, 11 Jul 2001 23:05:32 +0100
- Delivered-to: rich@xxxxxxx
- Delivered-to: mailing list ukha_d@xxxxxxx
- Mailing-list: list ukha_d@xxxxxxx; contact
ukha_d-owner@xxxxxxx
- References: <9ic1n9+j3ff@xxxxxxx>
- Reply-to: ukha_d@xxxxxxx
On Mon, 09 Jul 2001 10:40:40 -0000, you wrote:
>Has anyone got any experience of interfacing with Alarm Systems other
>than comfort ones?
I have the remains of a system used for years in a previous house. I
simply traced the zone input circuits (typically large resistors, and
a supression cap), worked out which was a supply rail and which was
the signal t the controller and added a wire t a CD4050 level
shifter/ buffer. This was then linked up t a 8255 PIO board in a PC.
This worked a treat- the panel worked normally, and the PC had
independant monitoring of all inputs and outputs.
TTFN,
James
James Derrick james@xxxxxxx, Cramlington, Near Newcastle, England
Beyond the Horizon of the place we lived when we were young,
In a World of Magnets and Miracles. Pink Floyd.
____________________________________
Automated Home UK
http://www.automatedhome.co.uk
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