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My days of using KDE are, alas, pretty much finished.
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The speed control is brutally simple: a carbon-pile rheostat in series with the 120 VAC 1 A sewing machine motor.
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One of my step bits has 1/32″ increments in that range, sooo…
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Extracting the sub-images is trivially easy with the ImageMagick convert function.
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Sooo, at one time there was a virus on that box masquerading as good ol’ Norton AV.
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That makes it a tank circuit with Q = R sqrt(C / L) = 1. Which is a pretty low Q, all things considered.
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If there’s no monitor connected, then the X server doesn’t know quite what to do.
