On Aug 28, 2010, at 7:15 PM, Nathan House wrote:

> I want to use a digital input on my PIC to count the number of steps a
> stepper motor is taking (pin 2 of a UAF2115 Speedometer IC), but the sign=
al
> is 12V and I think the PIC can only take 7.5V.
>=20
My first thought would be to use an optoisolator.  You can source or sink y=
our output to the PIC at whatever you are using for VCC.

Joe



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