The Opto board is now on the website. I haven't put a part number in for the opto isolators, as there are a number that are pinout and spec compatible. (TLP624-4 & TLP624-2 or PC827 & PC847 or NTE3220 & NTE3221 or PS2561-2 &PS2561-4 and others ) Brian here on the Zone did most of the work, I did a little cleanup, but the man's got to be an artist, single sided no jumpers!
http://pminmo.com/3axisopto/3axisopto.htm
:cheers: :banana:
Phil