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PICList Thread
'Suggestions for an newbee pic-er'
1998\11\28@111003 by Mike Chaloupka

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Dear Pic Community

Its cool that a forum like this exists for the exchange of ideas, info and lessons learned.

I'm beginning the development of a home brew compact pic design for a 3 speed triac motor control application  and  need of some guidance regarding pics and LCD drive.  I'm not new to embedded systems, guidance & nav mostly, but new to this type of application using small scale cpus.

Design requirements:  
 One line backlite LCD,                   (Any recommendations on low cost devices & suppliers?)
 Real time Clock mo, day, yr, time.  (Dallas, Epson anybody else ?)
 2 A/D for temperature                    (10-12 bit is more than enough)
 7 discretes for a keypad,               (simple membrane)
 4 outputs for zero crossing opticouplers.

Since this  is hobby shop application, I'd like to keep it inexpensive.
>From the literature, the 12C6xx pic looks like the might fit the bill, but I'm not sure about the LCD or RTC portion.  Also, what are suggestions for prom programmers, compilers, etc. ?

Thanks in advance....

Mike

1998\11\28@133254 by Vance Gloster

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www.wirz.com claims to have the cheapest LCD solution.  They sell an
add-on board as well as backlit and non-backlit two-line LCDs.  I bought
one but have not had time to play with it yet.  But it looks promising.

Now that I look at the data sheet it does support single-line LCDs, and the
Vacuum Fluorescent displays that someone else was asking about.

Vance Gloster               Wickedness is a myth invented by good
spam_OUTvanceTakeThisOuTspameni.net                   people to account for the curious
                          attractiveness of others. -Oscar Wilde

{Original Message removed}

1998\11\29@144811 by uter van ooijen / floortje hanneman

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My 0.5cts ( a dutch guilder is roughly $0.5) worth:

For one-off  and/or hobby projects stick to the 16f84 to avoid lengthy
erasures.
You'll appreciate the accellerated development cycle.
A 16f84 has no A/D, but a lm75 or ds1820 provides the temperature in
digital format.
If you run out of pins, use some TTL for input and/or output multiplexing,
or
take a second 16f84.
There are plenty 16f84 prorammer designs available (a 16c84 programmer will
work fine),
I think I've seen one which consist of a PC serial port and one resistor.
Start playing with one of those and then 'upgrade' to
an in-circuit programmer (doesn't need to be very complex).
Most LCD display modules are based on the HD44780 controller which is
easy to interface to. Again, plenty info on the web.

My pages contain a 16x84-based 16x84 programmer (in-circuit, production
grade)
and a HLL compiler for the 16x84 (I'll add hd44780 and i2c / lm75 routines
soon).
But there lots of other places with 16x84 info.

regards,
Wouter.

----------
> From: Mike Chaloupka <.....ChalouMPKILLspamspam@spam@SVERDRUP.COM>
> To: PICLISTspamKILLspamMITVMA.MIT.EDU
> Subject: Suggestions for an newbee pic-er
> Date: Saturday, November 28, 1998 17:07
>
> Dear Pic Community
>
> Its cool that a forum like this exists for the exchange of ideas, info
and lessons learned.
>
> I'm beginning the development of a home brew compact pic design for a 3
speed triac motor control application  and  need of some guidance regarding
pics and LCD drive.  I'm not new to embedded systems, guidance & nav
mostly, but new to this type of application using small scale cpus.
>
>  Design requirements:
>   One line backlite LCD,                   (Any recommendations on low
cost devices & suppliers?)
>   Real time Clock mo, day, yr, time.  (Dallas, Epson anybody else ?)
>   2 A/D for temperature                    (10-12 bit is more than
enough)
>   7 discretes for a keypad,               (simple membrane)
>   4 outputs for zero crossing opticouplers.
>
> Since this  is hobby shop application, I'd like to keep it inexpensive.
> From the literature, the 12C6xx pic looks like the might fit the bill,
but I'm not sure about the LCD or RTC portion.  Also, what are suggestions
for prom programmers, compilers, etc. ?
>
> Thanks in advance....
>
> Mike

1998\11\29@152414 by Michael J. Ghormley

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wouter van ooijen wrote:

> My pages contain a 16x84-based 16x84 programmer (in-circuit, production grade)
> and a HLL compiler for the 16x84 (I'll add hd44780 and i2c / lm75 routines soo
n).

You forgot to give the URL for your site:

       http://www.xs4all.nl/~wf/wouter/pic/

Michael

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