[David] put together this rather nice 1-wire barometer. An MPX4115 measures the pressure while an SMD DS2438 mounted to an 8 pin DIP socket provides the 1-wire interface. The writeup includes a nice description of the board layout and wiring, making this project accessible to just about anyone with a decent tip on their soldering iron.
Since my comment regarding where you can buy this was removed, can I atleast then inform that this hack is *old* and the same guy also has a 3.0 version on his site: http://davidbray.org/onewire/baro2030.html or is it offensive?
Posted at 8:29 am on Jul 22nd, 2008 by Dowser
I see 3 “wires” there, power, and two phone lines.
Posted at 1:24 pm on Jul 22nd, 2008 by pip
Pip: If you read the article you’d notice its for a so-called ‘1-Wire’ network, not that it uses one wire.
Posted at 4:24 pm on Jul 22nd, 2008 by Al
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If you don’t have a decent tip on your soldering iron, get a pre-made TAI8570 from http://www.aagelectronica.com/aag/index.html?target=p_21.html or some other place.
Posted at 8:00 am on Jul 22nd, 2008 by Dowser