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This one failed just slightly beyond the duration of its one-year warranty
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So I figured I’d use a 100 Hz tone under the audio and enable tone squelch, so we wouldn’t hear packets from anybody else.
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Word: if you want plenty of clearance in traffic, haul a 20-pound propane cylinder in your bike trailer!
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I glued a surface-mount MOSFET relay to the back of the PCB with urethane adhesive
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What’s truly odd is that the concrete (or whatever) filling is also warped.
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With the lens in the spindle, I can spin it at a few hundred RPM and persistence of vision blurs the beam into a nice, symmetrical disk.
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The power company hates gadgets like this…
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Some folks contend the knob unbalances the handwheel, but I’m not convinced that’s a real problem.
The Smell of Molten Projects in the Morning 