Folks,
Here's a couple of groups that could come handy some day:
PCB class -
http://groups.google.com/group/pcbclass
This group was set up to support the PCB class which takes place at
TechShop once in a while. Group members are knowledgeable about
ExpressPCB, OrCAD, Eagle and, of course, general PCB design practices.
Sensor Forum -
http://tech.groups.yahoo.com/group/sensorforum
This group was set up a few years ago as a stage for brainstorms about
sensors. Typical questions are "I need to measure (or control)
something. What sensors do I need? How can I interface them to the
rest of my device?"
Cheers,
- Nick