Keyboard Keep Alive Circuit
If you have had your computer fall asleep at the worst possible time before you know how frustrating it can be. Todd Harrison from Toddfun.com has come up with a solution. He built a simple battery operated Keyboard Keep Alive Circuit that he stuffed in a cute candy tin shaped like a Wiimote. This circuit closes a relay contact every 25 seconds. Next he connected an interface jack to his keyboard to that the relay can “press” a key when the relay closes. He selected an arrow key but a shift key or something like that would have worked just as well. This circuit would be great to hide inside a keyboard and have it press the caps lock key every 5 or 10 minutes, that would be enough to drive someone mad! If you are looking to solve the same issue tHERE is a device called the mouse jiggler that would do the trick, it is a USB device that slowly (or violently) jiggles the mouse, tHERE is also a neat way to make a DIY jiggler using an optical mouse and a watch. 
