Cesar,

Install chrome browser on Linux, it works fine with that site.

Ed Okerson

> Interesting photo, but it's out of context for me. I can see solder
> bridges on one of the high density SMT chips, do does it really work? Just
> kidding ....
>
>
> I visited the website at: http://nikita.argia.net/kmaxon/. Looks very
> interesting, but unfortunately whenever I click on any of the pages, it
> crashes my LinuxFirefox browser. I'll have to try IE.
>
>
> Cesar
>
>
>
> ________________________________
>  From: K Maxon <k_maxon23@...>
> To: "SeattleRobotics@yahoogroups.com" <SeattleRobotics@yahoogroups.com>
> Sent: Friday, January 4, 2013 1:28 AM
> Subject: [SeattleRobotics] NeRP Propulsion...
>
>
>
>
>
>
>  
>  
> It has  been a couple months since I logged into this account to check 
> for mail so it might take a bit to dig through it all, however I thought
> to take a minute and share if anyone out there is interested.
>  
> Earlier this fall I spent some time shrinking down the pair of CCAs used
> inside the wheel housings for my NeRP project, consolidating them into the
> board area of a single PWB.   At the same time I managed to upgrade the
> processors so that I can use the same tool chain through out all of the
> subsystems on the platform.
>  
> This photo was taken  after opening the rear wheel housing this evening. 
> This unit ran unattended through the night last night for ~18hrs under
> full feedback control while logging thermal data, power consumption and
> position / response data under varying control algorithm conditions. 
> (pre-selected, 20 minutes each).
>  
> http://nikita.argia.net/kmaxon/q40_133_001258.jpg
>  
> Kind  of fun to reach this small milestone point in such a  large
> project.  :)
>  
> -Kenneth
>
>
>

> Forget Social Computing and Artificial neural networks unless you want
> easy classes without much future value.

There are counter arguments. Randy has found knowing technical things very
profitable. But the future will not be like the past.

What is the Social Computing class about? It could be an easy class that
there to allow arts students to pick up a few credits or it could be the key
to an amazingly profitable future. It depends on how it'd taught and who's
teaching it.

Think of where the modern exciting apps are. They're on phones and tablets.
They're social apps. Imagine augmented reality glasses combined with a
location-based social app. There will be something in the next decade that
makes a lot of money for someone. But, of course, only one person will
become stinking rich - it's a lottery. The software and hardware people who
make the app work will make a comfortable living. But the work will probably
have been outsourced to Bangalore.

If you're a software developer then artificial neural networks are a trick
you should have in your armoury. The easy software problems have already
been solved or (will be solved by drones in Lithuania) and only the
difficult ones will remain. ANNs are not hard in theory but the practice of
how to encode the real world so an ANN can make sense of it is a skilled job
that a consultant could make a living at. And that consultant would have to
work locally. Combine expertise in ANNs with Genetic Algorithms and you have
useful skill set.

If, at college, you learn just the obvious stuff then you'll end up
competing with programmers and h/w designers from around the world for work
that can be outsourced to anywhere. OTOH if you don't learn the basics then
you won't be any use to anyone.

How do you choose a skill set where it's worthwhile hiring someone local?
Tricky. I make money because the work I do is either so specialised that it
can't be outsourced to drones or because I have to be there in the office
interacting with the client because the work is difficult to specify and,
without a specification, it can't be outsourced.

> Take Wireless Sensor Network and Field-programmable gate array

Can an FPGA project be specified by the client in such detail that the spec
can just be emailed to China (or wherever the programmers are)? Probably.
Aren't Wireless Sensor Networks something you buy over the internet from a
company in another country? These are very specific skill sets and specific
skill sets are the ones that get outsourced.

OTOH if you don't learn the basics then you won't be any use to anyone. When
you come out of college you have to be immediately useful to an employer.
'Social Computing ' won't be much use until, years from now, you become an
entrepreneur and make a billion or you become a consultant advising big
clients on their marketing strategies.

'Artificial neural networks' might be useful to someone and you might be the
only programmer in the company who's every written one.

Randy and I (and all of the other old fogeys) made decent careers out of
designing very technical solutions. But most of what we were once forced to
design anew is now available off the shelf. Many of the big companies that
used to make complicated things have now disappeared. Hardware has been
replaced with software. Software can be written anywhere in the world.

The future will not be like the past.

Peter

I have the posted on ebay for $107 plus shipping and handling
http://www.ebay.com/itm/271135347726?ssPageName=STRK:MESELX:IT&_trksid=p3984.m15\
55.l2649
i have 10 left as of 1-12-2013

Greetings Everyone,

Come on down to Renton Tech College this Saturday for a great monthly meeting.
No storms are coming that would cause problems but do check the SRS website
Friday just to be sure.

Lloyd Moore will be walking us through the basics of the Raspberry Pi. Bring
yours along if you have one.

It looks like we'll be in the west side of the K-Quad (K203/204). I'll have
signs up.

Bring along your projects-in-work or anything interesting you're working on now
or have worked on in the past.  We have lots of new folks so dust off those
robots in the closet & bring them on down.

Bring your questions about robots, the club, how to do stuff, etc.  And don't
forget stuff to move to someone Else's garage for a while too. Put it on the
side or back counter, but take it home if no one else does.

If you know of any events of interest to the club, bring the info along to
share. If you have pictures you'd like to show during the meeting
(Round-the-Room), bring them to me on a thumb-drive before the meeting & I'll
run them for you.

There's free, open Internet available in the room.

Steve K. - Secretary & Monthly Meeting Organizer

Please help me find & contact interesting presenters for future meetings. Send
contact information to me at secretary(at)seattlerobotics(dot)org.

Hope to see lots of you there!

Steve K.

If you have a Raspberry Pi and would like to follow along with Lloyd's
presentation, be sure to check the SRS site for instructions on what
to download (and some stuff you'll need to do ahead of time). Look in
the description of this month's meeting on
<http://www.seattlerobotics.org>

Cathy

On Tue, Jan 15, 2013 at 2:44 PM, sdk6772 <sdk6772@...> wrote:
> Greetings Everyone,
>
> Come on down to Renton Tech College this Saturday for a great monthly meeting.
No storms are coming that would cause problems but do check the SRS website
Friday just to be sure.
>
> Lloyd Moore will be walking us through the basics of the Raspberry Pi. Bring
yours along if you have one.
>
> It looks like we'll be in the west side of the K-Quad (K203/204). I'll have
signs up.
>
> Bring along your projects-in-work or anything interesting you're working on
now or have worked on in the past.  We have lots of new folks so dust off those
robots in the closet & bring them on down.
>
> Bring your questions about robots, the club, how to do stuff, etc.  And don't
forget stuff to move to someone Else's garage for a while too. Put it on the
side or back counter, but take it home if no one else does.
>
> If you know of any events of interest to the club, bring the info along to
share. If you have pictures you'd like to show during the meeting
(Round-the-Room), bring them to me on a thumb-drive before the meeting & I'll
run them for you.
>
> There's free, open Internet available in the room.
>
> Steve K. - Secretary & Monthly Meeting Organizer
>
> Please help me find & contact interesting presenters for future meetings. Send
contact information to me at secretary(at)seattlerobotics(dot)org.
>
> Hope to see lots of you there!
>
> Steve K.
>
>
>
> ------------------------------------
>
> Visit the SRS Website at http://www.seattlerobotics.orgYahoo! Groups Links
>
>
>

> From: "jamericanfreddy" <jamericanfreddy@...>
> Here is the page for one type ,they do have others
> https://www.sparkfun.com/products/7902
> Now to make the sensor you need a 2 tiny copper plates and some soft
> insulator material to go between them

I've just got the AD7746 evaluation board and it's a very impressive chip.
It's quite something to be able to measure femto Farads. You can easily see
a change when you wave your hand several inches from the electrodes.

I've made a force sensor with some 10mm neoprene foam. (I'm not convinced
that any rubber will be good - it's likely to be non-linear, drift with
time, change under constant load, etc., etc. I reckon coil springs will be
better. But I've got some neoprene foam to hand.)

What experience do you have with shielding?

Clearly you need some. Say you were building a bathroom scale. The
capacitance of the person standing on top is significant (I can see it on my
test rig).

Also, a bathroom scale has, say, four sensors. Did you work out whether the
AD7746 can support 4 sensors? It has two channels; each channel can be
differential or you can swich off the "negative" input and make it
single-ended. But can you switch off the "positive" input to also make it
single-ended? I haven't found that in the spec sheet.

(I guess I could measure differential; then single-ended positive; then
subtract to get single-ended negative but the noise would double.)

Noise clearly is a bit of a problem with such a sensitive chip. And the
update rate (60mS) is sufficiently slow that you can't afford to average
over lots of samples.

Finally, did you manage to talk to the evaluation board with your own s/w or
did you build your own board?

Peter

thats great work  DAVE
Also how do you like the EZ-BOARD  and comparing to pic micro or arduino board

--- In SeattleRobotics@yahoogroups.com, "dshinsel@..."  wrote:
>
> After lots of requests for others wanting to use Loki's code and
> hardware designs, I have converted Loki's sensor interface from PIC
> processor to Arduino.
> Check out the new interface shield schematic and source code at:
> http://www.dshinsel.com/loki-electronics/
>    (scroll to bottom for the
> new Arduino stuff)   http://www.dshinsel.com/source-code-download/
>
> http://www.dshinsel.com/release-notes/
>
> This might also be useful for anyone wanting to create a PC application
> that needs to controls external hardware and get sensor feedback. Hope
> this is helpful for folks!
> -- Dave Shinselwww.dshinsel.comTwitter: @DaveShinselFaceBook: Loki-Robot
>

Great presentation on the Raspberry Pi yesterday.  I'm still having trouble
locating the technical document that has the pin outs of the connectors.  The
only technical document I found on the http://www.raspberrypi.org website was a
quick start guide.  Can anybody provide a link to where I can find the full
technical manual?


----------------------------------------------------
"What the detractors and critics of electric vehicles
have been saying for years, is true. The electric
vehicle is not for everybody, given the limited range
it can only meet the needs of 90% of the population."

Ed Begley Jr.
----------------------------------------------------

See http://elinux.org/RaspberryPiBoard for some more information on the Pi.

I got my R2 Model B Pi's just over a week ago - and they are very
interesting indeed... I plan on adding a Pi to one of my RoboProp
based robots for more on-board processing power and memory.

Bill

http://Mikronauts.com

On Sun, Jan 20, 2013 at 8:40 AM, Randy Carter <rwcarter.wa@...> wrote:
> Great presentation on the Raspberry Pi yesterday.  I'm still having trouble
locating the technical document that has the pin outs of the connectors.  The
only technical document I found on the http://www.raspberrypi.org website was a
quick start guide.  Can anybody provide a link to where I can find the full
technical manual?
>
>
> ----------------------------------------------------
> "What the detractors and critics of electric vehicles
> have been saying for years, is true. The electric
> vehicle is not for everybody, given the limited range
> it can only meet the needs of 90% of the population."
>
> Ed Begley Jr.
> ----------------------------------------------------
>
>
>
> ------------------------------------
>
> Visit the SRS Website at http://www.seattlerobotics.orgYahoo! Groups Links
>
>
>