[PD] arduino+solenoid concert

[Thomas O Fredericks]

> "So, SMS is signicantly slower because it uses ASCII conversion ?
> Interesting. Even at high baud rates ?"

SMS is aimed at ease of use and precision. Although I am surprised to ear
about SMS's and Pduino's speed problems.

I made an installation with an SSC-32 servo controller controlling 24 servos
connected to PD. The SSC-32 is based on the SAME chip as the Arduino and
uses a communication protocol VERY similar to SMS and I never experienced
any problems.

Maybe you are not keeping your messages simple enough?
Or maybe the big difference was that I was using a hardware serial port and
not a USB>Serial chip/converter.

Tom


On 6/21/07, Alexandre Quessy <listes at sourcelibre.com> wrote:
>
> Hi,
>
> 2007/6/21, tim <info at timvets.net>:
> >
> >  Roman Haefeli wrote:
> >  On Thu, 2007-06-21 at 09:21 -0400, Alexandre Quessy wrote:
> >
> >  Hi!
> > I don't want to insist... but a task like this would be much easier
> > with the
> > http://www.arduino.cc/playground/Code/SimpleMessageSystem
> > than with something not-as-flexible like Pduino.
> >
> >  I agree to that.
> >  We did something similar a while ago, with realys, shift-registers and
> 13
> > solenoids.
> >  It was fairly easy to make one firmware for pd communication with SMS
> as
> > well as shifting code to drive the relays.
> >  More complex passages showed some timing fluctuation, but overall
> timing
> > was pretty good.
> >  Polyphony was kept at a maximum of 4, above that, things became more
> > unstable.
>
> So, SMS is signicantly slower because it uses ASCII conversion ?
> Interesting. Even at high baud rates ?
>
>
> >  In case you're interested, see
> > www.timvets.net/projects/erkiandtim/poltergeist
> >  We obviously were more inclined to drink beer than to shoot film that
> > night...;)
>
> Error 404 !
>
> a
>
> >
> >  Tim
> >
>
> --
> Alexandre Quessy
> http://alexandre.quessy.net
> http://www.puredata.info/Members/aalex
>
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-- 
thomas ouellet fredericks, tof at danslchamp.org, montreal, canada
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