In what is probably a fairly obvious and easy thing to do with Xbee, we have the arduino wireless programmer. This is a pretty cool idea because it clears up the mess of wires around your project and is very simple integrated into your project.
Using some tools bought off ebay, you can create your very own wireless, web controlled security system! The write-up is hosted courtesy of instructables and it gives a page by page description of what the project is & how to build it.
This is probably the most ridiculous wifi antenna i've seen, but it works and increases reception 5-15%. No theory is offered, just the results. But at the (build) price of 10 cents it's a bargain.
This is a very helpful little guide for mod'ing an old printer so that you can print to it via WiFi. It's very straight forward with a lot of pictures and helpful tips. The example printer used is an old laser-jet printer.
This is a cool little project to transform a standard NES console controller into a TV remote. The TV remote has the most basic of functions: power, volume & channel control. The project write-up is full of pictures and is written quite well, so check it out.
Today's project write-up is an IR Transmitter/Receiver pair using a PIC microcontroller. The circuit for both the transmitter and receivers is fairly complicated however not impossible to build. All the information you'll need to make them can be found in the write-up.
Laser Tag has been around for ages and now the technology that created laser tag has become affordable to make your own setup. This guide has everything you'll need to get going making your own custom laser tag weaponry along with several example designs.
We've seen high-altitude balloon projects before, here's another one! The project write-up has all the details of the computer system inside. Be sure to checkout the high-altitude aerial photos, awesome stuff.
The MEAN gps project is meant to use inertial movement (sensed by accelerometers & gyros) to predict your exact location if your GPS reception goes dead. The project write-up includes a software overview & hardware schematics.
This is a 2.4 GHz wifi antenna that you can make with pretty basic parts. It is of the Helix design and can operate at ranges of up to 10 Kilometers (theoretically) and 3-4 Kilometers optimally.