[Discuss] new serial port question

[Steven Kurylo]

> what i want is a wire coming out of the computer whose voltage i can adjust,
> monitor, script to, blahblah.

http://tldp.org/HOWTO/Serial-HOWTO.html

I don't think you can make your serial port do arbitrary voltages.
But you can use it to control other things;  I run a IR receiver off
my serial port.  I know many people who use 1-wire and similar stuff
to controls all sorts of things around the house.
-- 
Steven Kurylo