Re: Temperature Sensing.

["Dr John Tankard" <jtankard@xxxxxxx>]

I think you might mean the DS (Dallas Semiconductor) kit based on the DS
1820 ( the same part you use with a HomeVision) DS9091K is the part no for
the kit you mentioned and its 59.95 from maplin part VR39N. it uses a
network called Microwire 1 wire bus, however to use it you need a return
path (2 wires) and IIRC to use a lot of temperature sensors you real need 3
wires as the parasitic power drain is quite high for the temperature
sensors
( I could be wrong on this).

John
jtankard@xxxxxxx
Building Links Page http://www.tankard.com/links.htm
Extra links to hotlinks@xxxxxxx please

> -----Original Message-----
> From: Raymond [mailto:Reb.barnett@xxxxxxx]
> Sent: 10 January 2000 17:11
> To: 'ukha_d@xxxxxxx'
> Subject: [ukha_d] Re: Temperature Sensing.
>
>
> Consider using the Texas Instruments 1 wire bus - Maplins do a starter
> kit that comes with the PC interface board and a few different types
of
> sensor. I think the kit is around the £50 mark, and the individual
> temperature sensors are less than a £5 each. I think the sensors
return
> an actual temperature value, so you don't have to worry about
> compensating for resistance over long runs of cable etc.
>
> The kit was on my Christmas list but Santa forgot to bring it...
>
>


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