Re: servo board

Thanks for replying. My first router/mill will use geckos. In fact,
I already have 3 geckos for step/direction. However, I would like to
eventually move into the more professional stuff like servos. I have
looked at the servotogo, vigproducts.com (cost too much since it
needs more expansion boards), and pico-systems. I am just stuck
between the servotogo and pico-systems. I was told that the
servotogo has an 8 MHZ ISA bus while the pico-sytems uses a fast
parallel port. I was told that the ISA is a much faster
communication bus but I am not sure if that translates into better
performance. To save cost, I'll use brush DC motors using 23 or 34
NEMA motors. What I like about pico-systems is that you can buy the
starter 4-axis kit and then later invest more for the full 8-axis.
However, pico's 8-axis system cost more than servotogo's 8-axis
system. Also, servotogo's says you need a opto-22 product which is
probably another board to hold the relays (more cost). I know that
servotogo is used by many, but pico is fairly new. Pico has more
resolution using 16-bits rather than 13-bits, if it is needed. How
uses/buys the pico system? I would like to hear from users of the
pico servo systems. My future plan for this servo project is to add
a DC motor for the spindle to do tapping, add 4th/5th axis, add lathe
attachments. That is 7-axis already. I can't tell you more since I
am a newbie.

Thanks,


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "industrialhobbies"
<admin@i...> wrote:

> I just took a quick look at both of the mentioned boards and

noticed

> that the servo amp seems to require the other components (Pico) and

I

> didn't see any volt/amp numbers for the other. Which makes me
> question the total price of the application.
>
> I noticed you used the words "cost-effective" in your question,

which

> leads me to believe this is a hobby application, is this the case?
>
> To recommend a controller we would have to know more about your
> application. For example if you were just doing a CNC mill or
> something Geckos are the way to go(my opinion), but on the other

hand

> if you are building a teachable CNC arm or something like that you
> would need the additional features offered by these products and
> companies.
>
> Also what kind of servo are you talking about? (I'm guessing

brushed

> DC) How many volts? Amps (cont)? Amps (peak)? Motor torque
> constant?
>
> When it comes to picking a controller (either servo or stepper) all
> these factors come into play it unjust of us to make an opinion
> without these.
>
> So include a pinch more and we (open forum) will probably be able

to

> give a better opinion.
>
> Thanks
> Aaron Moss
> www.IndustrialHobbies.com
>
>
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "george_barr"
> <george_barr@y...> wrote:
> > I am looking for a servo controller. I have looked at www.pico-
> > systems.com and www.servotogo.com controllers. Which of these 2
> > servo controllers is better and why? Is there any other cost-
> > effective servo controllers out there that I should look at?
> >
> > Thanks,