jeremy youngs wrote: > hello again gentlemen, I broke down and bought a kit for my steppers and it > should arrive tomorrow, great!!!!!! 2 yrs of waitng and this thing is > finally coming together. I am currently running a 2.5 hp treadmill motor > with the original driver. the driver gets pretty warm after 15 min or so > and goes to thermal shutdown. Im wondering does lcnc output a 0-5 v or can > it generate a pwm waveform directly? if it will generate pwm than it would > be pretty easy to opto isolate and drive an igbt h bridge for a driver. Any > thoughts or suggestions would be greatly appreciated thank you > You can't generate a really fast PWM signal directly in software, except at a very low frequency. That might be adequate for a motor speed control, though. LinuxCNC would have no trouble sending a value to a digital to analog converter or a PWM generator, just a matter of how to format the output on a limited number of pins.
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