On Fri, Aug 10, 2001 at 03:44:21AM +1000, Roman Black wrote:
> Herbert Graf wrote:
> >
> > That's the plan, I'm actually going to do three channels and for simplicity
> > I plan to use a seperate PIC for each channel with the same basic code (the
> > differences in code will be due to the complexity of the control needed (ie.
> > some will have position feedback, others won't) and the motor being driven
> > (using a stepper on one channel and DC motors on the other two)). TTYL
>
> Hi Herbert, first, i'm with you on the 16F84 issue,
> I have hundreds of them and use them for anything
> I want to whip up quick, whether "too simple" for
> a 16F84 or "too complex" for a 16F84. The fact that
> I have the chips, the boards, and many code projects
> with register setups completed makes it easier to use
> the chips you always use. You don't have to explain
> WHY you're using a 16F84. :o)

As one of the advocates of the new parts, I'd like to explain that the
suggestion really isn't directed to the old hats on the list. I'll usually
throw in my two cents when I see a post that starts with "I'm starting
out with PIC and I have some questions about the 16[CF]84[A]."

Most of the time those folks simple do not have enough exposure to realize
that there are newer/faster/bigger/cheaper/more fully featured parts out there.
They think 16F84 because the vast majority of pages and projects out there
specify the part.

If you're starting out there's simply no comparison. Simply from price alone
the part is the winner. Just looked up on Digikey for 25 part quantity:

16F628: $55
16F872: $70
16F84A: $92

All for the 20 Mhz part.

And since the 16F628 has an internal 4MHz oscillator it gets even cheaper
for timing insensitive applications. BTW I noticed that the 4 MHz parts were
only pennies cheaper (14 to be exact at the 25 part price), that little is
lost buying on 20 Mhz parts.

Everyone that's taken a spin around the block knows all the strengths and
limitations of each of the part subfamilies. And of course if you'd got em
and they can do the app, use them.

But I think we'd be remiss as good PICLIST citizens not to inform newcomers
about the advantages of the latest technology.

BAJ

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