Quote Originally Posted by HenrikOlsson View Post
The dimensions of the shield and the location of the main I/O headers matches those of the Arduino shields otherwise the Arduino shields would not fit the AMICUS (mechanically....electrically they might not anyway as we've seen).
Thanks, Henrik.

I had already found the schematic and then I also found a PDF with the shield outline and dimensions. Both are attached to my last response to Bruce in this section along with a link to where I found the dimensioned drawing where there's also a link to an even lower cost Arduino clone for 18 or 28 pin PIC or PICAXE.

The EM500 shield will have minimal connections to the main board - I think 3.3V, GND, RX, TX re all that are needed. (I may find more once I'm fully awake - I was up well past my bedtime last night.) The site I referenced in the other thread mentioned a new 5V version of the chip, also.