HOW TO – Build parallel port prototypes
Hardwaresecrets has a goo how-to on doing projects with a parallel ports – “The computer parallel port is the easiest way to control devices outside the PC, like LEDs, lights and even home appliances. In this tutorial we will teach you how to use the computer parallel port to control circuits outside your computer. The greatest thing about printers nowadays is that they use USB connection. Thus, on the majority of modern PCs the parallel is not used, so it is available for us to use it to control circuits outside the computer box.” Link.
Refik writes – “Have you ever wanted to create professional looking devices, video players, show maps and GPS data on it? Your imagination is the only limit now. A DIY project on how to use a color graphic LCD display and how to design your own gadgets….” 
If you are one of those people who never has the right cable when they need it then this project is for you. Turn one cat5 network cable into the Megatron of cabling by wiring custom adaptors and bridges. This straight through cable can transform into a crossover, serial, serial null-modem, cisco console, vga or vga extension cable by using four adapters, two links and one couple. 
Matthew writes “Previously, E-DSP visited the possibility of using your sound card as a signal/function generator. I was curious about the results, but did not have a Windows machine close by to test it. After some searching, I found a Linux alternative and was able to test the limitations of my Sound Blaster Live!” 
Peter Green made a portable Mac Mini! “Why the Mac Mini Portable? Well, in short I wanted a machine that was really dinky to just pop in my rucksack, and while the PowerBooks/iBooks are pretty small, they still take up a fair amount of space. I wanted something with a very small screen that was more or less hand-held, and mac just don’t do that [yet].” [
Jeremiah writes “As a new Linux user, there is a sense of frustration. You can’t seem to get anything working correctly or you just don’t know how. I know exactly how that feels, and after spending countless hours searching forums and guides, I have compiled a list of the ten guides I find most useful as a new Ubuntu user (and Linux user for that matter). So, here they are, not listed in any particular order.” Thanks Jason! 