I missed this post. Ok, bishop yes you are correct the connector is 180 degrees out on the version 4 board. I originally noted that on my website, but somehow I lost the note. I think I need to make an intermediate webpage on the interface issues. The pullups together 3.3K and 10K are probably ok, it depends on the Opto Isolator selected but pull the 10K's to start. I haven't looked at the V4 board thoroughly, but if it doesn't have a 5V output available , kinda make the opto isolator implementation more costly. You will need an isolated 5V source to power the pic boards and and the opto outputs. I'll look into this further and post later today.
Phil
Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
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