[GreenKeys] Current loop interface board, full design info.

[John Nagle]

    As requested, I've provided documentation for the current
loop interface board I've built.  See

http://www.animats.com/nagle/aetheric/connecting.html

You can download a .zip file with the schematic capture,
board layout, and bill of materials files, plus some design notes
and a picture of the completed board.

I'm not selling boards; ExpressPCB will make three of the blank boards for $51.
Parts cost for one board is about $40, from DigiKey.

(The somewhat archaic style reflects that this is written for
the steampunk community.)

				John Nagle