Re: Any info on controlling spindle speed of 7x12 mini lathe

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "zarzul" <aminear@b...> wrote:

>
> I am just beginning the project of converting my minilathe to CNC, has
> anyone seen any info on the circuit diagrams for the existing spindle
> speed control, I would like to modify it so I can control speed using
> my existing motor from Mach3.
>

If you want to control the motor speed, then you have a few very
simple options. one is to use a stepper powered pot. Althugh it is
not dynamic, it offers the interface.

another way is to add a PWM output to genearate a voltage signal like
the POT would have.

Yet another way is to use the modbus output to a PIC and then have the
PIC or AVR do the real-time speed control.

Dave