could reduce the connections in a
common 12V setup to Power, Ground,
and Serial Signal, and not take up
much space at all. Interesting, isn’t it?
Now, build up your own development board with a 20-pin socket and
you have a setup complete for 20-, 14-,
and eight-pin development. Better yet,
check out the DM164120-1 development board package at www.micro
chipDIRECT.com. It’s shown in Figure
5 and is really a great deal. You get
one populated board and two blank
boards for $23.99. That’s about $8
per board, and it has the serial
programming port already wired in.
Another great board is the
PICPROTO20 from microEngineering
Labs ( melabs.com), shown in Figure 6.
This board has all the circuitry set up
for a voltage regulator, external crystal, and MCLR pull-up resistor. It even
includes a header that matches their
programmers for In-Circuit Serial
Programming™ (ICSP). They retail for
$12.95 each, so it’s not a bad way to
develop with this family of PIC MCUs.
PIC MCU project. I just cannot believe
how easy it is getting to create unique
items with a PIC MCU. I’m constantly
thinking of new applications and projects, but keep running out of time to get
them into a decent format for these
columns. This is why I can honestly say
more projects are coming, as they are
sitting on my bench half complete. If you
have a particular project idea you want
me to consider, shoot me an email at
email@example.com, and please stop
by my website at www.elproducts.com.
I am working on improving it with
more information for visitors. I’m
finding all kinds of useful links as I help
Microchip customers solve their design
challenges. Some of the links are just
hard to find on the Microchip website.
Hopefully, I can put links to them on
my website so you have a one-stop
place to easily find what you need.
Until next month, keep on having
fun with those PIC MCUs. NV
I promise more projects in the near
future, and some of them will include
these smaller PIC MCUs. I just wanted to
let you know what’s out there, as you
gather the pieces you need for your next
■ FIGURE 6. The PICPROTO20 from
May 2007 93