[Noisebridge-discuss] New Multimeter needed....

Rachel McConnell rachel at xtreme.com
Mon Jan 24 17:21:25 PST 2011


I actually think you two are talking about different use cases.  Dr
Jesus is referring to jointly-owned or Noisebridge-owned things, locked
away to keep Some People out.  Shannon is talking about personal stuff
locked away for personal reasons.  Reactions to these things are likely
to be different (mine are and I doubt I'm THAT unique).

Rachel

Shannon Lee wrote:
> I call BS on the whole "we can't have locks at Noisebridge because OMG
> hackers will pick your lock JUST BECAUSE ITS THERE" thing.  I believe
> that the next thing taken out of a locked box against the box's owner's
> wishes at Noisebridge will be the first.
> 
> If you want to keep good but "walkable" stuff, get a toolbox or
> something with a padlock on it and put it on your  shelf.
> 
> Or we could become more serious about access control.
> 
> --S
> 
> On Mon, Jan 24, 2011 at 12:26 PM, Dr. Jesus <j at hug.gs <mailto:j at hug.gs>>
> wrote:
> 
>     As I've said before, there's something in the hacker psyche that
>     become irrationally upset when confronted by a lock.  It happens more
>     to some than others, but for some members it makes them very, very
>     angry.  We all have to live together, so installing a locked cabinet
>     is probably not worth it.
> 
>     Besides, I made arrangements to safely keep safety-critical gear
>     elsewhere in the building out of Noisebridge's control.  I can show
>     anyone else who needs to keep nice things at 2169 how that works when
>     I'm there on Tuesday.
> 
>     On Mon, Jan 24, 2011 at 11:17 AM, John E <neurofog at gmail.com
>     <mailto:neurofog at gmail.com>> wrote:
>     > Jim,
>     > I was under the impression borrowing any equipment, books etc. from
>     > noisebridge was considered unexcellent, especially when people are
>     "sloppy"
>     > about returning it.
>     > Perhaps we should consider having a lockable "crate" with the
>     expensive test
>     > equipment and dev boards, so that random people can't walk off
>     with it.
>     >
>     > Regards,
>     > John
>     >
>     >
>     > On Mon, Jan 24, 2011 at 11:06 AM, jim <jim at well.com
>     <mailto:jim at well.com>> wrote:
>     >>
>     >>
>     >>    Holy Moly! Thanks for the link to the $6 MPJA meter!
>     >>
>     >>    For me, el cheapos work great, but i do power supply
>     >> and audio work where most of the measurements are
>     >> discovering catastrophic failures and continuity.
>     >>    I'd love to know detailed criteria for assessing a
>     >> multimeter. One approach might be to point to the specs
>     >> of a good model (fluke 17{5,7,9}, which i looked up).
>     >>    But it'd be really helpful to understand the why of
>     >> each criterion: in measuring capacitance, what are the
>     >> use cases and acceptable tolerances? For me, if the RC
>     >> figure allows, I can look to see if the "needle" moves
>     >> to know if it's working (can't do that with pfs, of
>     >> course); cap tolerances for me are +-50%, give or take....
>     >>    Is there a need for a does-all meter or is it
>     >> acceptably useful to have a reasonably good VOA meter
>     >> along with separate cap and L measurement tools (maybe
>     >> a frequency generator and scope...)?
>     >>
>     >>    As to "Why We Can't Have Nice Things at Noisebridge",
>     >> that issue makes me furious!
>     >>    It's horribly inconsiderate to take things away: I'm
>     >> guessing mainly it's a sloppy, selfish mentality to the
>     >> effect that "I'll just use it and bring it back after
>     >> I'm done", which very often fails to "I'll just use it
>     >> and let it sit around unused and forgotten somewhere at
>     >> my house forever more after I'm done."
>     >>    Possible approaches include
>     >> * We Can't Have Anything Nice at Noisebridge
>     >> * People can bring in their personal nice things and
>     >>  label them and put them in their member shelves and
>     >>  loan them out when/if they see fit.
>     >> * Have a checkout system for some things--probably a
>     >>  signout sheet: probably a fair number of people will
>     >>  sign stuff out before they take things home and leave
>     >>  them there, and when asked, they'll probably be able
>     >>  to find the things and bring them back.
>     >>
>     >>
>     >>
>     >>
>     >>
>     >> On Mon, 2011-01-24 at 09:11 -0800, Jonathan Foote wrote:
>     >> > Hey Zach, thanks for noticing! But I'm with  Dr. J. here.
>     >> >
>     >> > I wouldn't get a Fluke, it will just walk like the last one.
>     (Another
>     >> > demonstration of Why We Can't Have Nice Things at Noisebridge.)
>     Sounds
>     >> > like you could use one for yourself, though!
>     >> >
>     >> > I have a spare El Cheapo I can donate. I'll bring it tonight
>     and slap
>     >> > some stickers on it.
>     >> > For the price of a Fluke we can get a few of these $6 ones
>     which will
>     >> > work great for 99% of anything we want to do at NB.
>     >> > (How many people not doing power engineering really need accurate
>     >> > capacitances > 400 uF?)
>     >> >
>     >> >
>     >> >
>     http://www.mpja.com/Category/Test_Equipment/Digital_Multi_Meters/LARGE_CHARACTER__LCD_MULTIMETER_17191_TE.asp
>     >> >
>     >> > As Dr. J mentioned we can loan ya an expensive one should you
>     need it.
>     >> >
>     >> >
>     >> >
>     >> >
>     >> > On Sun, Jan 23, 2011 at 10:52 PM, Dr. Jesus <j at hug.gs
>     <mailto:j at hug.gs>> wrote:
>     >> > >
>     >> > > I've noticed that the people who need a trustworthy DVM just
>     bring
>     >> > > their own.  I have a pretty nice one you can borrow if that
>     will help get
>     >> > > some of the LCDs working.
>     >> > > On Sun, Jan 23, 2011 at 10:46 PM, Zach .
>     <organic_unity at yahoo.com <mailto:organic_unity at yahoo.com>>
>     >> > > wrote:
>     >> > >>
>     >> > >> Hey folks,
>     >> > >>
>     >> > >>    Zach here and this is my first attempt at posting to the
>     email
>     >> > >> list.  I'm writing this because I believe we desperately
>     need a new
>     >> > >> multimeter to work with and am not sure how to go about the
>     process of
>     >> > >> noisebridge getting one.  But allow me to explain first...
>     >> > >>
>     >> > >> noisebridge used to have a very nice Fluke multimeter that went
>     >> > >> missing some months ago.  I have looked all over for it but
>     it has yet to
>     >> > >> turn up.  I am in the process of repairing some LCDs for
>     noisebridge (got
>     >> > >> one working already) and could be saved a great deal of time
>     and effort with
>     >> > >> a better multimeter.  The best one we have now is a "Vichy"
>     brand.  I
>     >> > >> personally find it incredibly low quality and a very large
>     pain to use.  And
>     >> > >> its capacitance readout maxes out under 400uf...which is a joke.
>     >> > >>
>     >> > >> I recommend we collect donations for this very important
>     electrical
>     >> > >> tool for the benefit of noisebridge and everyone else at the
>     space.  Great
>     >> > >> Fluke meters are inexpensive these days and a quick ebay
>     search pulls up one
>     >> > >> at a good price:
>     >> > >>
>     >> > >>
>     >> > >>
>     http://cgi.ebay.com/FLUKE175-TRUE-RMS-MULTIMETER-EXC-CONDITION-CASE-/190484916097?pt=LH_DefaultDomain_0&hash=item2c59c92781
>     <http://cgi.ebay.com/FLUKE175-TRUE-RMS-MULTIMETER-EXC-CONDITION-CASE-/190484916097?pt=LH_DefaultDomain_0&hash=item2c59c92781>
>     >> > >>
>     >> > >> the Fluke 175 is a superb meter measuring capacitance to
>     10,000uf or
>     >> > >> TWENTY TIMES higher than our current best meter.  This will
>     make repairs far
>     >> > >> easier.  It also has RMS frequency reading, high voltage
>     (600v), and is far
>     >> > >> more accurate.  It also reads more than twice as fast.
>     >> > >>
>     >> > >> so....what do people think?  sorry I don't know how this
>     process is
>     >> > >> supposed to work, people just told me to post to the list so
>     here I am...
>     >> > >>
>     >> > >> best,
>     >> > >> Zach
>     >> > >>
>     >> > >>
>     >> > >> _______________________________________________
>     >> > >> Noisebridge-discuss mailing list
>     >> > >> Noisebridge-discuss at lists.noisebridge.net
>     <mailto:Noisebridge-discuss at lists.noisebridge.net>
>     >> > >> https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
>     >> > >>
>     >> > >
>     >> > >
>     >> > > _______________________________________________
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>     <mailto:Noisebridge-discuss at lists.noisebridge.net>
>     >> > > https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
>     >> > >
>     >> > _______________________________________________
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>     <mailto:Noisebridge-discuss at lists.noisebridge.net>
>     >> > https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
>     >> >
>     >>
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>     >
>     >
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>     >
>     >
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> 
> 
> 
> -- 
> Shannon Lee
> (503) 539-3700
> 
> "Any sufficiently analyzed magic is indistinguishable from science."
> 
> 
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