Created HHKB Alt controller (markdown)

HHKB-Alt-controller.md

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+# Alternative Controller for HHKB
+
+* [Geekhack.org thread](https://geekhack.org/index.php?topic=12047.0)
+
+* [Connector unmate](https://geekhack.org/index.php?topic=12047.msg1543860#msg1543860)