Hi,
I have this chinese made step motor driver which I would like to control through the LPT port on my PC for CNC work. The software is mach3. The driver is opto-isolated and needs clock and direction signals to drive each axis. But the LPT pulses don't seem to be able to supply enough current to do the job. Some sort of a buffer circuit is needed but exactly what, I don't know. Is there such a circuit ready made which can be purchased or does anybody have any idea how to make such a buffer. It needs to have at least six channels. It also needs to have some sort of protection to prevent possible damage to the LPT electronics. What is such a device called? I don't seem to be able to search for anything useful, so I think I am not using the right jargon in my searches. Thanks for any leads in this respect.
Cheers, Bluebirdiran
I have this chinese made step motor driver which I would like to control through the LPT port on my PC for CNC work. The software is mach3. The driver is opto-isolated and needs clock and direction signals to drive each axis. But the LPT pulses don't seem to be able to supply enough current to do the job. Some sort of a buffer circuit is needed but exactly what, I don't know. Is there such a circuit ready made which can be purchased or does anybody have any idea how to make such a buffer. It needs to have at least six channels. It also needs to have some sort of protection to prevent possible damage to the LPT electronics. What is such a device called? I don't seem to be able to search for anything useful, so I think I am not using the right jargon in my searches. Thanks for any leads in this respect.
Cheers, Bluebirdiran