>=20
>=20
> > Strange. I did just the same application (transmitter only]=20
> a couple=20
> > weeks ago without any problem. I calibrated the oscilator by myself
> > (used 12C508
> > with a window), the  speed I use is 2400 baud with 1%...
>=20
> I guess YMMV depending on the PIC type, revision, maybe even=20
> the production lot, the temperature, Vcc variations, the=20
> phase of the moon and whether you have properly waved a dead fish.
>=20

Right.  And the problem is multiplied if you are doing PIC to PIC
communication, because the variations in clocks may add.

I do think the internal clock on the 16F628 is great for non-critical
timing applications, though.

Alex

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