> On Sat, Feb 09, 2013 at 09:38:46PM +0100, Lars Andersson wrote:
>> LinuxCNC documentation says it would be possible to use the pluto-servo
>> firmware to connect to a L298.
> I actually have a little sherline lathe retrofit that works this
> way. It has pittman motors run by L298. I haven't used it recently
> but years ago it was a fixture at the CNC Workshops, demoing (the
> new!) threadcutting features.
>
>> At a closer look it would be useful to
>> have both DIR and inverted DIR for each PWM channel.
> You can just use the up/down mode (pwmdir = FALSE), see the
> pluto_servo manpage.
Did not think of that. Seems to be the solution.
>
> But before you do *anything* else, see if you can get the pluto
> firmware loaded and get it working. The plutos are notoriously
> flaky and totally fail to work on some (the majority of?) parallel
> ports.
That part is already finished. Encoders are working. PWM output is working.
>
> No way would I use one for my lathe if I was starting today, even if
> it was free. There are too many good inexpensive choices from mesa.
I get your point. It just looked like a cute little board ...
Thanks for your help!
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