Aluminium Framed Router

[Clive S]

Checked back with Tweakie regarding this and no explanation available response was

"I have not looked into the reasons behind opto - opto problems, perhaps it's timing related, it is just that this issue has been reported on the forum many times in the past. Tweakie."

Ok So not quite the response you quoted !! really just a comment from him. (I have read many of Tweakie's posts over the years and do respect him but in this case he only made a comment and not a statement) But glad you have it sorted.

I think you will find that a lot of these cheapo bob's don't work well with modern pp on pc's because the pp will only output about 3.5V the older one's output 5V this means that the bob has to convert the 3.5v back to 5V to get the correct logic. This is a known and well documented problem with cheap bobs.

I have said this for the benefit of others reading this post and thinking double opto's won't work.