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General Mach Discussion / Re: Breakout Boards
« on: November 17, 2007, 05:00:39 PM »
hi,
for my two-pence worth, I would not use a break out board,and thats nothing to do with cost cutting.
firstly, practically all stepper/servo drives have optoisolation built in.so it is purely to safeguard against bunging
more than 5 volt back down the port by mistake.Treat your port with respect!
Alternativly use a pci card,best to use them +5volt common though (as a laptop) taken from a spare usb port.
Secondly,if the optoisolater or its wiring isnt quite right,that can be a bitch to trace,giving you mis-steps, and
hours of fun! Some drivers,aparantly dont like being fed through secondary opto's.
Just my opinion!
Tony
for my two-pence worth, I would not use a break out board,and thats nothing to do with cost cutting.
firstly, practically all stepper/servo drives have optoisolation built in.so it is purely to safeguard against bunging
more than 5 volt back down the port by mistake.Treat your port with respect!
Alternativly use a pci card,best to use them +5volt common though (as a laptop) taken from a spare usb port.
Secondly,if the optoisolater or its wiring isnt quite right,that can be a bitch to trace,giving you mis-steps, and
hours of fun! Some drivers,aparantly dont like being fed through secondary opto's.
Just my opinion!
Tony