>=20
>=20
> > I'm not driving it when the PIC is high, I am driving it=20
> when the PIC=20
> > is low.  The PIC is running at 3V.
>=20
> But that contradicts your earlier statement of having the=20
> cathode connected to 3V.  If the cathode is tied to a 3V=20
> rail, then the LED can only go on when the anode is raised above 3V.
>=20

Sorry.  I always get those mixed up. =20

I keep wanting to think of cathode as positive, therefore tied to +V.

When I drew the diagram, I used a -> for the LED, to try to make it
clear which way to LED was wired.

I admit it was confusing when I had the 3V in there without specifying
that was the same as the supply voltage.  I couldn't figure out where
you were getting 2V from, until I remembered that 5-3 =3D 2.  :-)

Alex

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu