A bit more info about pull-up resistors
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[[teensy-1.jpg]]
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Some interesting pull up 10k resistor business here... (TODO add a small diagram and notes)
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The two 2.2kΩ (Red Red Red Gold) pull-up resistors ensure the switches give a clear reading when open.
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[Read more about pull-up resistors here](https://learn.sparkfun.com/tutorials/pull-up-resistors).
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[[teensy-2-fuxor-reziztorrs.jpg]]
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