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willteddy09 (November 30, 1999 at 12:00 am)
fake!
kevin216 (November 30, 1999 at 12:00 am)
class
SpeakUpNow (November 30, 1999 at 12:00 am)
Good for mimes.
Ribena88 (November 30, 1999 at 12:00 am)
You're not understanding me.
This thing definitely isn't as good as an interactive whiteboard - although it's a lot cheaper and simpler, it doesn't serve the purpose as well. Riding a bike is cheaper and simpler, but it doesn't mean we all do it as a car does the job a lot better.
gurintto (November 30, 1999 at 12:00 am)
"Things should be made as simple as possible -- but no simpler." - A. Einstein.
1mW 3V Laser Module: £10.67 (not incl. the driver, sensor, etc. etc.)
20-15,000Hz Sub-Miniature Microphone: £1.31
Ribena88 (November 30, 1999 at 12:00 am)
Yes, and they work well in classrooms/boardrooms/lectures and other fixed situations. Why would anyone need a portable interactive whiteboard? What purpose would it be for?
gurintto (November 30, 1999 at 12:00 am)
doesn't "a few microphones on a surface" sound simpler?
gurintto (November 30, 1999 at 12:00 am)
Electronic whiteboards:
"Two electrically conductive sheets separated by a layer of acetone. When they touch, the surface sheet is deformed, electrical contact establishes the (X,Y) coords."
"An array of wires behind the board interacts with a coil in the stylus tip to give the (X,Y) of the stylus."
"An IR laser is located in each upper corner of the board which sweeps across the surface"
"the marker or stylus sends out both an ultrasonic sound and an infrared light."
Ribena88 (November 30, 1999 at 12:00 am)
Hmm, I still can't really see the use of it in that case. What problem is this solving, basically.
gurintto (November 30, 1999 at 12:00 am)
i think the point is, you just need to attach a few microphones to a surface and you are good to go, rather than setting up a big fancy piece of equipment. |
