On Sat, Jul 13, 2002 at 12:52:09PM -0500, Jay Jacobs wrote:
> My goodness, my apolologies for sparking the holy war :)

None necessary. We have this discussion all the time. I always weigh in with
novice posters because often they are not aware of advances in the PIC line.
As PicDude correctly pointed out there is a massive information base for the
16F84. So novices think that it's the best chip to start with.

>
> I was just curious about the noppp circuit, and thanks for the feedback on
> that, I think I will scrap that and go with Tait's design, or probably Bob
> Blick's modifications of that for the 16F628 also.

There shouldn't need to be any change for the 16F628.

>  The only probably now
> being that I don't have a 7407 in my collection.  The local radio shack
> didn't stock that, and I hate to do a mail order for just one chip!

My TLVP design scraps the 7407 in favor of a 74HCT573, which is available
at the RatShack for $1.39. I purposely picked that chip because it's a
stock RadioShack item. The HCT does the level conversion for the modern 3.3V
parallel port, so no pullup resistors are necessary.

BTW I presume that you have 16F84's and you don't have any 16F628's right?
If that's the case then you'll have to build a HVP programmer.

>
> Anyway, I'm sure I'll be posting again once I get a 7407 and if my "Hello
> World" (blinking LEDs) circuit doesn't work.

Cool. See you soon.

BAJ

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