glights is a tool to control lamps from your PC!
glights is a program to control a series of lamps (up to 8) hooked up to your PC's parallel port. This is done using the printer port and some external switching and driving circuitry. You'll have to build the circuits yourself, but they are not particularly complicated.
In order to control actual, real-life lamps you will have to build yourself some circuits. It is recommended to use the schematics from DiscoLitez.
Here are some key features of "glights":
· Control up to 8 lamps
· Run various patterns over them (currently 5 different patterns are included)
· Change the speed
· Invert/reverse a pattern either manually or automatically
· Automatically switch pattern
· Pick individual lights to stay on permanently
Building the circuitry
Have a look at http://www.discolitez.com/circuits.shtml, their circuits work pretty well (I'm using the "TRIAC Drivers" model myself). Also, their warnings and disclaimers apply.