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A comment on Show HN: I spent a year making an electro-mechanical prototype of a liquid clock. Parent comment

Re:Show HN: I spent a year making an electro-mechanical prot... by david-given on Saturday September 26, 2015 @05:37PM (#10284504)
It's interesting to see that you're physically moving the magnets towards and away from the ferrofluid. Did you investigate electrically switchable permanent magnets?

e.g.: http://www.eclipsemagnetics.com/media/wysiwyg/datasheets/lif...

I know very little about them, other than that they're cool. The ones in that datasheet start about at about 2kg, so I don't know if you can get them small enough for your purposes.

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Re:Show HN: I spent a year making an electro-mechanical prot... by damjanstankovic on Saturday September 26, 2015 @07:40PM (#10284839)
yeah the size is the problem definitely. I experimented a lot with electromagnets and finally gave up, any result i could get didnt leave me with this kind of animation:

https://www.youtube.com/watch?v=-drmRYsvUaM

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