[XCSSA] Meeting Topics for Monday 17th Meeting (over 1 week out)

X-otic Computer Systems of San Antonio xcssa at xcssa.org
Sun Aug 16 19:47:27 CDT 2009


On Sunday 16 August 2009 03:52:27 pm X-otic Computer Systems of San Antonio 
wrote:
[...]
> http://i385.photobucket.com/albums/oo298/fsafstrom_2008/100_1081.jpg
> http://i385.photobucket.com/albums/oo298/fsafstrom_2008/100_1083.jpg

Fredrik.. After looking at this a second time.. I just realized that you've 
either set this rig up to crank some serious high power tunes.. OR you're 
using a freak'n audio power amp as a PWM motor controller!  If the latter.. 
that's freak'n ingenious!  And one of the more quick-n-dirty-elegant ways 
I've seen anyone do a high power robotic motor controller.. What a cool idea!

Is there even a microcontroller involved at all with this project?  Or is it 
just a receiver and PWM out to amp-in?  Is it running from a power inverter.. 
or are you just using lower voltage (12V) class B amp voltages?

Did you come up with the idea on your own? Or have you seen other people using 
a audio power amp as a PWM motor controller?

Maybe I'll bring my O-Scope so that you can show what PWM actually looks like 
and how it works.

Tre cool man!

Tweeks


> /Fredrik
>
> X-otic Computer Systems of San Antonio wrote:
> > Well folks.. it sounds like Tim has a friend in town and isn't going to
> > be able to make XCSSA to show us the latest evolution of his midiSID
> > system.
> >
> > I had planned on doing a casual presentation on various USB-bootable
> > distros.
> >
> > Fredrik?  Bruce? Anyone else have plans to bring someting in to show?
> >
> > If we're light on presentations and show-n-tells.. I supposed I could
> > also muster an overview of either doing LVM on Linux by hand (to piggy
> > back on Tim's previous talk about his NAS setup and how to do LVM + SW
> > RAID.  If anyone's interested.
> >
> > Tweeks
>
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