RE: Re: Thermostat with RS232

["Dean Smith" <ukha@xxxxxxx>]

Patrick

I do have Comfort - but hadnt realised the 1st 8 Inputs were Analogue
Capable. I'm happy to use comfort as the intelligence, as I said I have
relays via comfort already to override the time controller so with some
rejigging it could be run 100% from Comfort. I have Homeseer and a UCM in
conjuction with your Plug-In is on the "buy-soon" list so would
have all the
control via Pronto/X10/Web I need.

I was browsing both the Maplin and Quasar sites last night and there were
several kits which seemed to come desperately close to doing the job for
not
a lot. In particular 2 looked promising:-

FE33L - Temp Module (?9.99!) gives High/Low Temp outputs, LCD Temp Reading,
Serial Out.
It just seemed to be missing serial In - though for that price I will
probably get one to play with.

VY39N / K6502 - Thermostat with Telephone control (79.99). Subsitute RS232
for DTMF/Phone and again its complete.

There was also an American site selling small tmep related kits using
Dallas
sensors.

I'm keen to use my new Soldering Iron again ;-) so maybe I'll keep
investigating these options for now...

Dean

-----Original Message-----
From: Patrick Lidstone <patrick@xxxxxxx>
[mailto:patrick@xxxxxxx]
Sent: 25 February 2003 07:43
To: ukha_d@xxxxxxx
Subject: [ukha_d] Re: Thermostat with RS232


If you have comfort, you can connect cheap temp sensors direct to
(IIRC) the first 8 inputs, which are also analogue capable - although
I've never tried this myself.

You will still need the ability to manually decide on a
setpoint/override the heating I guess? You could do this by
connecting the existing thermostat to a comfort input, instead of to
the heating. This then allows you to decide whether to accept the
human setpoint or not - e.g. if the house is empty.

If you can live with a PC of some description (or perhaps Home
Vision, which is anything but cheap), then the Quasar temperature
boards are a flexible solution - around 30 quid or so will set you up
with 4 independent temperature readings reported over a serial
interface.

If you are a DIY'er then you could hang on for the xAP telemetry unit
PCBs. These will provide thermostat like functionality, interface to
comfort direct or via a PC (PC not mandatory), and are fault tolerant
to a degree, depending on the final configuration.

Patrick


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