RE: Re: Room occupancy detection and door opening/closing - 1-wire or wireless solution?

["Neil Wrightson" <neilw@xxxxxxxxxx>]

Hi,

I actually made my own power supply distribution. This is basically a
regulated 12VDC supply that is fused as well as having a DS2406 to switch
the outgoing +12V rail.

So when the HA software starts up, it first looks for the output on the
power supply, finds this and then turns on the supply for all of the PIR's
etc.

But, you could just use a basic plug pack for the supply.

DS2406,DS2407 are pretty much the same thing. I actually use DS2406 in some
modules I make, these have an input for interfacing to a PIR and a relay
output for switching the light.


Regards,

Neil Wrightson.


_____

From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
dermot_bradley
Sent: Thursday, 16 October 2008 9:28 PM
To: ukha_d@xxxxxxx
Subject: [ukha_d] Re: Room occupancy detection and door opening/closing -
1-wire or wireless solution?



--- In ukha_d@yahoogroups. <mailto:ukha_d%40yahoogroups.com>
com, "Neil
Wrightson" <neilw@...> wrote:
>
> So, the 12VDC on the CAT runs the PIR's and the relay switch contacts
> go to the 1Wire I/O device (DS2407).

I just wondered what was providing the 12VDC at the other end - have
you just got a "wallwart" powering multiple PIRs?

As for the DS2407 - Homechip don't do them but the D2PC is similar
(DS2406-based).

Do you know of a DS2407 supplier in the UK?

> Speed wise, there is approximately a 1 second delay from entering
> the room to the lights turning ON.

Sounds good.







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