Circuit board

All,

I have a functional circuit on a breadboard, based mostly on the design
posted to the Opendiag web site. It has been tested on a 98 Passat and
a 98 GTI. The GTI uses two-wire communications (K & L), while the Passat
uses only the K-wire.

I have also drawn a schematic and board layout in Eagle (www.cadsoft.de).
I plan to make these files available under GPL very soon. I want to
make a prototype board first, to make sure it works correctly.

The single-layer board measures 1.25" x 3.5". No surface-mount
components are used. On one end is a female DB-9 for connection to
a laptop computer. On the other end is a male DB-9 for connection to
the automobile. The pinout of the male DB-9 is the same as that used
by the J1962 cable sold by B&B Electronics. B&B sells the cable for
$45 shipped. Although it's expensive, it's a very nice moulded cable
and it was worth the convenience to me.

I have been thinking about having several boards made professionally.
If anyone would be interested in a kit including all the parts and a
circuit board, please contact me. I would probably need 10 people, and
the price will probably be around $35-40. This is for an unbuilt kit
with no software! If you have used a soldering iron before, it should
take less than an hour to build. This is not a profit thing for me!
I am just doing this to gain experience.

Thanks!

Jeff

 
Received on Wed May 03 10:40:34 2000