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Old 10-04-2012, 09:51 PM   #614
knc1
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Posts: 11,221
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Join Date: Feb 2012
Location: Central Texas
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Here is another brain-fart, earlier today:
Quote:
When the LED is off, it does look like a slot . . .
Which might be because it is combined with a phototransistor or photodiode.

Which means it might need an IR signal to get it into service mode.
(The UARTs on the machine have a mode to accept signals from an IR detector.)
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