I’m gonna start by saying the author of this project was very inventive by using this method. I never thought something like this is possible: by using a piece of paper the system detects the humidity by taking pictures before and after the humidification. The system is able to take 1500 photographs per second and analyze them. The whole system is based on dsPIC30F2012 a powerful microcontroller from Microchip.
Humidity Meter for Soils Takes Pictures Using A Computer Optical Mouse:
[Download Project] – [View Project PDF]
MagicMouse, a three-dimensional ultrasonic computer mouse designed by a team of five WPI undergraduates, is one of 10 inventions honored with the inaugural PopSci Invention Awards, the cover story in the June 2007 issue of Popular Science.
The MagicMouse is a true 3D mouse. Users can move the cursor about the screen simply by pointing and moving their index finger. Zooming is achieved by moving the hand nearer to or farther from the screen. Since both actions can be done simultaneously, the mouse makes it possible to work easily in three dimensions to pan and zoom through 3D maps, for example, or manipulate objects in computer-aided design (CAD) drawing packages. The mouse could also make game play more realistic and interactive, much as the novel 3D remote on the new Nintendo Wii game console has done. For more routine applications, like word processing and web surfing, the WPI students note that controlling a computer with hand gestures should make computer use more intuitive and less intimidating.
I have to say, this gadget is super cool, but on the other hand being such a new invention, it will take some time until it catches the wide public, but who knows maybe in a few years we all are gonna wear this mouse.
Here is the Video Link if you want to see this gadget in action.