G'day John,

Yes, that's one way to do it, great if you'd like to go all analog and
keep your skills in that domain current.  ;-)

But I use an Allegro ACS714 current sensor, powered from the micro,
which gives you an analog output in the 5V range.  Zero current is
represented by half of Vcc.

I use these on carrier boards.

https://www.pololu.com/search?query=3Dcurrent+sensor&x=3D0&y=3D0

There's a range of part numbers corresponding to current range.
There's also ACS709 for -75A to +75A.

--=20
James Cameron
http://quozl.linux.org.au/
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