Re: [CAD_CAM_EDM_DRO] encoder feedback

Wm McNett wrote:

>I'm working with one of the hobbycnc boards and was wanting to install encoders on my motors for feedback to Mach2 or some other software.
>

You should know that Mach2 does not use the encoders for motion
control. It only provides
position info to a separate display in the corner of the screen.

>Can this be done with some type of board between the encoders and the PC?
>

Yes, you really need a dedicated encoder counter, especially if your
machine moves
fast, or the encoders have high resolution. The pulses can come too
fast for software
to count without missing some. Of course, Mach2 doesn't support
hardware encoder
counters. You should look at EMC, the only open software that supports
servos with
position feedback to the PC. See http://www.linuxcnc.org/

>I'm also interested in something to replace a pot to control DC motor speed via to PC.
>
>

It sounds like you are looking for a real analog servo control.

Jon