Originally Posted by
renatopub
I never tried that, and I would also find usefull if anyone that have already used the "manual control" port to post results.
From all the information I have seen, I tend to beleave that “manual control” and “external control” mean the same thing. I would also guess that those are nothing more than duplicated direction/step pins that overide those of the parallel port. Anyway, just a guess, and some solid info on that is still missing for what I see.
By the way. There is NO 555 chip on my board, contrary to item description on e-bay. Not that I care, but it just goes to show that we can not relly on the manufacturer description.