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• The force is not so strong with this one!

  Jim Hough • 08/07/2014 at 12:20 • 0 comments

  After some testing I have found the force to be far too low to act in the way I was intending for this project. I think the next best way of achieving my goal is to move either a permanent magnet or big electro-magnet around under the writing surface. More testing to follow.

• Constructing the electro-magnet array

  Jim Hough • 07/27/2014 at 21:47 • 0 comments

  I have decided to try winding lots of individual coils for the electromagnet array. I think that the magnetic force will need to be quite strong to have a good guiding effect. I have some fine enameled wire and one of those 'pin-art' things. I'm going to try winding a fixed length of wire on to each pin and then connect them up like an LED matrix. I think the coils will each need a series diode to work in this manner but would actually like to be able to pull and push the stylus magnet so bi-directional current would be good. Winding all of those pins and keeping track of the wire ends is probably going to send me mad! I actually want the final version to be a much bigger but am testing the theory with this small one. 

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