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General Mach Discussion / Re: Need advice on which breakout board is needed?
« on: February 18, 2009, 01:31:42 PM »
I use the PMDX122 on all my machines and like them a lot. I also think it is often best to seperate out things like relays, spindle control etc rather than having them all on the one board, especially if mains voltage is involved in such things as spindle relays, but I am sure there are many who would disagree
As Ray has said, your encoder count will determine the pulserate you need, I think the Vipers have electronic gearing but again personally I shy away from using that as cogging can become an issue at lower feed rates, so the SS might be the best way to go.
One other thing is the parallel port connection on the mobo may have low voltage so make sure the BOB you get is happy with this, most are nowadays I think, however if you do get a smoothstepper then that is not an issue.
Hood
As Ray has said, your encoder count will determine the pulserate you need, I think the Vipers have electronic gearing but again personally I shy away from using that as cogging can become an issue at lower feed rates, so the SS might be the best way to go.
One other thing is the parallel port connection on the mobo may have low voltage so make sure the BOB you get is happy with this, most are nowadays I think, however if you do get a smoothstepper then that is not an issue.
Hood