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Definitely not competitive with an experienced operator on a real IBM 029 keypunch machine
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When faced with a problem you don’t understand, do any part of it you do understand, then look at it again.
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Now, if that isn’t suspiciously linear, I don’t know what is!
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Those wraparound compound eyes don’t miss much!
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Nothing, but nothing adheres to the bag material
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I was really, really tempted to pocket a key
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The general idea is to drive one stepper with a known current, apply a known resistive load to the other motor’s windings, and then plot torque vs speed.
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Now, you probably don’t want to do this in real life, because you want a coupler with a bit of compliance
The Smell of Molten Projects in the Morning 