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Of late, the magnetic stirrer mixing my morning cocoa occasionally doesn’t start spinning when I turn it on, which calls for some investigation. Removing the four obvious screws concealed under the rubber feet and prying off bottom cover reveals the trivial innards: The speed adjustment pot holds the little circuit board in place, with the…
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Because the reducer uses balls, it slips when the slide jams against something, rather than strip its gears.
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Unfortunately, the Z axis was essentially immovable.
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Perforce, that means the H-field is parallel to the ground, which means that ferrite bar antennas must be horizontal in order to work properly.
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It’s nice to know that folks are finding (and, presumably, using) the tech info that I put together.
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A bit of digging showed that the ImageMagick convert program produced an alpha channel that selected only the traces and left everything else unselected.
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We spotted these ice formations on a recent walk.
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The balance point is sufficiently delicate that the additional weight of the epoxy pulls his side down a bit.
The Smell of Molten Projects in the Morning 