On Mar 6, 10:09*am, polygonum wrote:
On 06/03/2013 10:03, Tim Watts wrote: On Wednesday 06 March 2013 09:51 Andy Champ wrote in uk.d-i-y:

On 05/03/2013 19:27, Andrew Gabriel wrote:
I use dallas 1-wire digital thermometers around the house.
These are not wireless, and require a twisted pair

Am I the only person trying to work out how "1-wire" means twisted pair?

Andy

The name is erroneous - a marketing gimmick - it means "1 wire for +ve power
and data combined" - you still have a 2nd wire for ground...

I too had forgotten what that was about. Thanks.

--
Rod

Not that this is any particular help to the OP, but there's a small
module on the market that gives you a serial signal of T and RH -
DHT11. They just a bit over a quid each. I don't have the spec in
front of me at the moment so I don't know what temperature range they
go to. It's a 4 lead device about 10mm square. I'm about to couple a
group of them to an Arduino to see if I can cut down the what seems
excessive underfloor ventilation here.

Rob