Embedded Data Systems devices and adaptors are useful to control real world devices like thermometers or power switches from a computer.
The HA5 controller communicates over a standard rs232 port and implements the relatively complex 1-wire or microlan protocol, freeing the computer from any timing constraints.
Psxtcl implements the low interface layer between a TCL program and an HA5 adaptor (it should be easy to adapt to a simpler, cheaper HA7E too, or to a bigger HA5-30). It is then trivial to write an application running on a Linux, FreeBSD or any UNIX computer. My own application controls the temperature in my wine cellar.
Psxtcl is free and provided under the GPL license.
Download version 1.1.3.
Questions, requests, feedback welcomed: firstname.lastname@example.org