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The general idea is pretty simple: recycle the motor from a can opener-class gadget
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Needless to say, a magnet sticks firmly…
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The Schottky protection circuitry doesn’t have much effect up through 75 mV.
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The graph shows that the 10 mA steps recorded by the now-well-protected MAX4372 high-side current amp are low by about 10%
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… and there stands a turkey on the patio!
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Evidently my wrist wants to work at a more clockwise angle, not at whatever Logitech found suitable.
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The symptom is that the headers are unsolderable: the solder doesn’t wet the pins.
