Nintendo Wii's controlers ?

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Offline neilep

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Nintendo Wii's controlers ?
« on: 05/05/2007 19:01:53 »
We've just got a Nintendo Wii !!

I have to say..the way ewe ewes it is amazing !!

You hold a wireless controller in your hand and the Nintendo knows where it is.

I've been bowling, playing tennis, baseball, golf, boxing today !

How does it know where the controller is ? and how does it know how to apply  the appropriate force you move things faster/slower ?
Men are the same as women, just inside out !

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Offline Karen W.

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Nintendo Wii's controlers ?
« Reply #1 on: 06/05/2007 01:14:52 »
I have never seen one but the majority of the kids even at the preschool know what they are and how they work! DID you have loads of fun?

"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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Offline daveshorts

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Nintendo Wii's controlers ?
« Reply #2 on: 06/05/2007 01:20:33 »
There are apparently 2 technologies in them. They have silicon accelerometers - these are silicon chips with big long (a few μm) slightly bendy pieces of silicon that are stuck down at one end and not at the other. If you accelerate them they will bend - just like if you hold a bendy twig - if you wave it around it will bend. You then measure the capacitance between them and the piece of silicon next to them - this will change as they bend. more here http://archives.sensorsmag.com/articles/0203/14/main.shtml

The will measure how fast you are waving it, and probably used for the really active games. It however doesn't tell the computer where it is pointing. for this the WII uses a second technology involving a sensor bar? this has a load of infra red LEDs - the things your remote control uses for talking to the TV. There are sensors on the Wiimote which detedt which direction these are in and therefore where teh wiimote is pointing  in real space - I guess there is some sort of calibration step so it doesn't matter exactly where the sensor strip is.