How to use an Arduino to read the signal from a set of digital callipers and send the reading over USB.
This might be useful for accurate position sensing in home made / hacked computer aided manufacture systems. Adds USB functionality to your callipers.
A great reference on reading digital callipers can be found at:http://www.shumatech.com/support/chinese_scales.htm
What this instructable adds to the shumatech tutorial is:
How to use an Arduino to read the callipers (using very few extra components).
Details of another protocol found to be in use on some callipers.
Basic Arduino code is provided.
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