Arduino V-USB / HID 14 channel data logger

UPDATE:  Please see Addendum 2 at the end of this article for an Excel automatic logging implementation. There are several good articles on Instructables about building your own Arduino.  Depending on your horde of electrical parts, you may be able to build an Arduino clone for as little as $3.  I recently built two: one on a solderless breadboard and another that is like a USB-stick made on perfboard and m ...

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