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Some of the threaded inserts sunk into the vertical bars spun freely
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Collecting nine random bits requires 9 x 330 µs = 3 ms
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Both traces come from a kludged 10 dB AC coupled “attenuator” probe
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I picked the LM324 for pedagogic reasons
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Even with the keys in the ignition…
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Yes, that’s off-center, but it’s dead on the scar where the peg broke off
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The LED gradually faded from a blink to a steady glow
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That amounts to filling the card 14 times
The Smell of Molten Projects in the Morning 