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The motor brushes seem to be a pair of stiff wires
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I couldn’t bear the thought of that lens rattling around in my belt pack, chewed upon by the assortment of other crap in there.
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I proposed building a quick-and-dirty pin wrench
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The new mounts are utterly rigid, which means the next failure point will be either the antenna mast or its base structure.
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But we kept using them and … Mary’s mount failed in the middle of a 350-mile bike ride
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Alas, red ink absorbs UV and eventually bleaches away.
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This scary-but-innocuous fellow landed on our doorstep last night.
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This being an entirely one-off project, I used good old LM317T regulators with a handful of transistor switches to vary the voltage and clamp the output to ground.
The Smell of Molten Projects in the Morning 