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First off, understand that I know overhead projectors exist-- I
even know of digital projectors and things such as "smart
boards" --this idea is not about just being able to automate
the process of displaying information for my classes. This idea
is about having this cool thing that I want because
I think it
would be cool.
I have seen some high-end printers (called "pen plotters" I
think) that have a set of two cables and use a pen to draw an
image on to the paper. I want one that holds a piece of chalk
and draws on the board.
Imagine the diagrams! The fonts! The anachronistic perfection
of a digital age in an old-school (literally "old-school") medium!
It would make me so happy.
[link]
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a chalkboard with tracks on the left and right frame, a thin horizontal machine with diff. colors chalk drops down from the top frame riding on the tracks... |
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Do a search for "pen plotter" I already have a chalk board
pantograph... it's not the same thing at all. |
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I don't see where [futurebird] avers that the idea is not a plotter. On the contrary, it seems that it is a plotter, a big one, that uses chalk instead of plotter pens. |
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The lux version maybe could switch between different colors of chalk. |
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Simple to make, the only problem would be the length of the chalk - Obviously pens stay the same length no matter how much you use them (except if you chew them, but i think we should be safe from a pen plotter) but the chalk would need to be fed out. Also pen plotters (that Ive seen) write text by using horizontal lines. This means it would work with a chalk board but wouldnt look as cool - so extra designing would be needed |
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This is nothing like a pantograph, jurist. |
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The ones Ive seen were attatched to IR spectrometers and NMR scanners - so were used for graphs. The text didnt have to be that complicated so it used lines (in the same way dot matrix printers print them) |
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// I don't see how text can be composed of only horizontal lines though // |
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x-y axes would not be limited to horizontal lines if both axes move simultaneously. Current plotters can draw curves easily. |
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this should be bakeable, there are various x,y controlled cutting machines, plotters etc. |
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2 smoothly controlled motors, a chalk lifting device a few bits of string and hours writing the software to convert it to on board reality. |
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