[Noisebridge-discuss] Muralizer (drawbot) meetup!

[Christoph Maier]

On Fri, 2009-05-01 at 18:17 -0700, Jonathan Foote wrote:
> Hey Josh,
> 
> This sounds like a fun project. Sorry I'm feeling overcommitted or I
> would help out more.
> 
> Do feel free to tap what is becoming my obsessive-compulsive mental
> database of robot parts .
> (For example, given what you told me, this looks like a good motor
> controller at a reasonable price:
> http://www.hobbyengineering.com/H1918.html)

It might help to add the Allegro A3977 to the parts database. 
http://www.allegromicro.com/en/Products/Part_Numbers/3977/
Seems that the part is available from digikey:
http://search.digikey.com/scripts/DkSearch/dksus.dll?lang=en&site=US&KeyWords=a3977&x=0&y=0

Looks like the fab at home contraption
http://fabathome.org/wiki/index.php?title=Main_Page
uses it. It's real easy to use on the off the shelf xylotex boards,
http://www.xylotex.com/XS3525V400.pdf

but with an electronics CAD system, it might be cheaper (and way more
fun!) to design a drive board (or decentralized boards attached to the
motors) from scratch. 

Unless, of course, you end up deciding to use servo motors instead.

Greetings from remote San Diego
Christoph

> On Thu, Apr 30, 2009 at 5:38 PM, Josh Myer <josh at joshisanerd.com> wrote:
> > It looks like Monday evening at 7PM is the best timeslot.  We'll need
> > to be vaguely prompt, so we don't distract folks at circuit hacking
> > night.
> >
> > This is a really cool project, with some really cool people interested
> > already.  There's always going to be room for more contributions, so
> > if you might be interested, come on by to see what we're up to!
> > --
> > Josh Myer   650.248.3796
> >  josh at joshisanerd.com