h a l f b a k e r y
Expensive, difficult, slightly dangerous, not particularly effective... I'm on a roll.
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What's a magna doodle anyway? a piece of plastic with oil and some metallic dust inside.. so.. why not make it bigger? it could be put on a whole wall, and instead of drawing with a pen , a row of electromagnets on the back would write using el pulses, just like a printer.
- requires no power to
keep image once you write it
- pretty good resoloution from a distance of few feet & up
- great outdoors - and no problems with sunlight
- really cool!
AND - if someone would find a way to make the resoloution at least 3x better - it could be great for ebooks!! (I can't stand reading books from lcd screens)
disadvantages? well, try to get kids with magnets away from it ...otherwise it'll become a huge toy..
i'm gonna bake this one day! so don't go around stealing my idea or a curse will come on your head!
(probably patented anyway..)
cheers from israel!
Can't beat a good magna etcha idea.
[jonthegeologist, Oct 04 2004]
||dosen't have to be <electro>magnets... could be fixed stylus-type magnets with up-down servos -- just like the old 9 pin printers...