added notes on using Arduino Pro Micro 3.3V with Let’s Split
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@ -100,3 +100,16 @@ half to a computer by USB the keyboard will use QWERTY and Colemak when the
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right half is connected.
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Notes on Using Pro Micro 3.3V
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-----------------------------
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Do update the `F_CPU` parameter in `rules.mk` to `8000000` which reflects
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the frequency on the 3.3V board.
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Also, if the slave board is producing weird characters in certain columns,
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update the following line in `matrix.c` to the following:
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```
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// _delay_us(30); // without this wait read unstable value.
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_delay_us(300); // without this wait read unstable value.
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```
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