[Space] Meeting Notes 2010.04.06

Brian Choate brian.choate at gmail.com
Wed Apr 7 15:25:41 PDT 2010


For the wifi base I have ready to go:
SSID: space-bridge
WPA2: space-bridge

I will have an RTSP clients available on the system I am bringing to run
the projector. If we have internet out to the world I might be able to
bounce the feed off one of my servers.

I have a 5v voltage regulator, plenty of 9v batter clips, and other
components to make a 9v powered power-supply for you if we want to go
that way .

B.

Chris Paget wrote:
> Yes indeedy, video is ready to go - give me an SSID, a WPA2 key, and 5V
> and I'll give you 640x480x15fps :)  It has a somewhat clunky but totally
> usable web client to view the video, or it also supports RTSP if anyone
> wants to do something more clever with it.
>
> What time tomorrow are we meeting at NASA?
>
> Cheers!
>
> Chris
>
>
> On 04/07/2010 02:01 PM, Christopher Lincoln wrote:
>   
>> Sweet! then we can check everything Thursday when we get there for set
>> up. ^_^
>>
>> time-lapsing the photos would be cool. Hopefully the balloon will not
>> move much and our pictures will be stable.
>>
>> Christopher
>>
>>
>> On Wed, Apr 7, 2010 at 1:18 PM, Christie Dudley <longobord at gmail.com
>> <mailto:longobord at gmail.com>> wrote:
>>
>>     You know, that thought hadn't occurred to me but it makes perfect
>>     sense to have the traditional "payload" on the table.  It should  be
>>     pretty easy to deal with batteries and charging of things we have in
>>     our hands.
>>
>>     One thing that would be a neat to do with the camera we usually send
>>     up there is to create a time-lapse of the event.  It would be a cool
>>     promotional thing for us and them after the fact.
>>
>>     Chris got the webcam/single board computer/wifi working completely,
>>     but it needs a 5V power supply.  I have a battery for my phone that
>>     provides 5V on USB that we can use, but we haven't done measurements
>>     on how long it would last. If other folks have these it might be
>>     nice to be able to swap this out.
>>
>>     We will be at Moffet tomorrow to set up and get this all going.  I'm
>>     sure we can figure something out then.
>>
>>     Christie
>>     _______
>>     "We also briefly discussed having officers replaced by very small
>>     shell scripts." -- Noisebridge meeting notes 2008-06-17
>>
>>     The outer bounds is only the beginning.
>>     http://www.flickr.com/photos/genriel/sets/72157623376093724/
>>
>>
>>     On Wed, Apr 7, 2010 at 10:54 AM, Blake Barrett
>>     <Blake at blakebarrett.net <mailto:Blake at blakebarrett.net>> wrote:
>>
>>         I agree with Brian. The payload would better serve us on the
>>         ground where it can be shown and handled. We also shouldn't have
>>         any trouble tracking our display balloon as it will be in
>>         persistent low-altitude geosynchronous orbit ;-)
>>         I like the idea of being able to show people that amazing things
>>         can be done with readily available parts/components; having
>>         those things available to handle just reinforces that message to
>>         the kids and attendees who we are presenting to.
>>         We are showing/displaying at the education fair, not performing
>>         a live launch.
>>         Just my $(1/50).
>>
>>         Blake
>>
>>
>>         On Wed, Apr 7, 2010 at 10:38 AM, Brian Choate
>>         <brian.choate at gmail.com <mailto:brian.choate at gmail.com>> wrote:
>>
>>             We will have the usb set up ready to go in case the wireless
>>             does not
>>             work out. The USB gear we are using is designed for working
>>             up to 64',
>>             so it will work just fine for what we need. We also
>>             calculated the
>>             weight into our planning.
>>
>>             It doesn't make much sense to send the normal payload up
>>             (i.e. - g1's,
>>             radios, gps, etc...). Those pieces would be far better as
>>             part of the
>>             table top display.
>>
>>             B.
>>
>>
>>             Christie Dudley wrote:
>>             > I REALLY think we should skip the USB and as much of our
>>             effort as
>>             > possible should be put into getting wifi working.  I think
>>             Chris
>>             > stayed home from the meeting to work on this, so it's not
>>             being
>>             > forgotten.  It won't take much effort to get this built
>>             and working,
>>             > considering he has a device that pretty much does that
>>             already.
>>             >
>>             > Has anyone tried to make a USB connection work through
>>             what you're
>>             > talking about?  The thought of running USB that far gives
>>             me protocol
>>             > nightmares.  It wasn't meant to run that far and you're
>>             going to run
>>             > into frustrating glitchy behavior because of spurious and
>>             > unpredictable timeouts.  The weight of the cables will not be
>>             > inconsiderable and the connectors won't stay well
>>             connected.  In order
>>             > to get it up to the height we were talking about, you'd
>>             need to have 3
>>             > hubs - 4 segments.
>>             >
>>             > The alternative would be to mount the payload lower, but
>>             with only 1
>>             > hub, you're going to only get about 30 feet (the protocol
>>             limitation
>>             > you mention is 16.4'), and you just won't get the cool
>>             video coverage
>>             > of being at height.
>>             >
>>             > I have the package tracker at work.  I put it in my bag
>>             when we pulled
>>             > it out of the payload.
>>             >
>>             > I'm more than a little concerned about battery life over
>>             the course of
>>             > the event.  We ordinarily plan for 5 hour flights.  This
>>             thing is
>>             > going to be going for 2 days, >12 hours continuously on
>>             Saturday.  Do
>>             > we have spare batteries for everything, or is there some
>>             scheme we can
>>             > come up with to get them and install them if necessary?
>>             >
>>             > I foresee Friday night, us wanting to pull the payload
>>             down and get
>>             > everything on chargers so we have full life for Saturday,
>>             at the very
>>             > least.  I think I still have a spare G1 battery and we
>>             could swap the
>>             > battery for the second radio (it is NOT a walkie talkie.
>>             Ahem.)  for
>>             > the one we have on the payload mid-day.  I'm curious about
>>             the camera
>>             > batteries, though.
>>             >
>>             > I know Chris was talking about getting a single board
>>             computer with
>>             > built in wifi working.  We should probably just toss in a
>>             router to
>>             > our kit so we can communicate to it.  We should keep in
>>             mind we might
>>             > need on-site reconfiguration capabilities so we can work
>>             with any wifi
>>             > they may be providing.
>>             >
>>             > Meredith, do you know if they will be providing wireless
>>             that we will
>>             > be expected to use, or do we need to bring our own?  I
>>             think it'd be a
>>             > lot better if given the choice, we use our own.  It's much
>>             easier to
>>             > configure and test that way.  Also the distance is short
>>             enough that
>>             > I'm not overly concerned with getting a good signal if
>>             we're able to
>>             > be more or less directly beneath it, although I think
>>             Chris and I
>>             > should test whatever setup we come up with just in case.
>>             >
>>             > Christie
>>             > _______
>>             > "We also briefly discussed having officers replaced by
>>             very small
>>             > shell scripts." -- Noisebridge meeting notes 2008-06-17
>>             >
>>             > The outer bounds is only the beginning.
>>             > http://www.flickr.com/photos/genriel/sets/72157623376093724/
>>             >
>>             >
>>             > On Wed, Apr 7, 2010 at 12:16 AM, Christopher Lincoln
>>             > <cclinco at gmail.com <mailto:cclinco at gmail.com>
>>             <mailto:cclinco at gmail.com <mailto:cclinco at gmail.com>>> wrote:
>>             >
>>             >     as we are getting short on time, set up happens on
>>             Thursday, we
>>             >     decided to work with the simplest plan.  If we are
>>             able to get the
>>             >     wireless webcams to work, great, if not, we will have
>>             the USB bulk
>>             >     extenders as a back up.
>>             >
>>             >     Christopher
>>             >
>>             >
>>             >
>>             >
>>             >     On Wed, Apr 7, 2010 at 12:05 AM, Chris Paget
>>             >     <ivegotta at tombom.co.uk <mailto:ivegotta at tombom.co.uk>
>>             <mailto:ivegotta at tombom.co.uk
>>             <mailto:ivegotta at tombom.co.uk>>> wrote:
>>             >
>>             >         Wait, what happened to the wifi plan?  I've got a
>>             nice little
>>             >         wireless
>>             >         webcam here that only needs 2 wires to give it 5V
>>             and it'll
>>             >         give you
>>             >         live video over wifi.  I thought someone else was
>>             bringing an
>>             >         access
>>             >         point for my wifi stream to land at - what's with
>>             the USB bulk
>>             >         extenders?
>>             >
>>             >         Cheers!
>>             >
>>             >         Chris
>>             >
>>             >
>>             >         On 04/06/2010 11:57 PM, Christopher Lincoln wrote:
>>             >         > Spacebridge Meeting notes 2010.04.06
>>             >         >
>>             >         > Yuri's Night
>>             >         >  - Balloon (bring clean (and spare) and tampered
>>             one)
>>             >         >  - paracord 300 feet (Brian is pickign that up)
>>             >         >  - Helium (2 tanks, Nils)
>>             >         >  - Nils will drop off teh helium tanks on thursday
>>             >         >  - Nils will bring his 7 gallon jug will water
>>             >         >
>>             >         > Payload
>>             >         >  - Styro bin (.7 lb)
>>             >         >  - 300 ft paracord (.8 lb) (Brian)
>>             >         >  - 6 pin M to 4 pin M USB adapter
>>             >         >  - 3x 15' feet of USB repeater cable (1 lb per
>>             15 ft) (Brian)
>>             >         >  - 1 spare USB hub ( to bridge the 5 meter limit
>>             for USB)
>>             >         [40 grams each]
>>             >         >  - 1 canons for after the fact pictures [.4 lbs
>>             each]
>>             >         >  - USB cam [30 grams]
>>             >         >  - noisebridge banner
>>             >         >
>>             >         > Display table
>>             >         >  - payload bus
>>             >         >  - parachute
>>             >         >  - G1
>>             >         >  - Opentracker
>>             >         >  - GPS antenna
>>             >         >  - Cable harness
>>             >         >  - Dipole antenna
>>             >         >  - Package tracker (if found)
>>             >         >  - walky talky
>>             >         >  - A700 camera (Blake)
>>             >         >  - paracord (Brian)
>>             >         >
>>             >         > Auxiliary
>>             >         >  - Zipties (Brian)
>>             >         >  - 12' x 12' Tarp (Brian)
>>             >         >  - Latex gloves (Brian)
>>             >         >  - Gaff tape (Brian)
>>             >         >  - Powerstrip (provided)
>>             >         >  - Table (provided)
>>             >         >  - 22" LCD Monitor (Albert)
>>             >         >  - laptop x2 (Christopher for projector w/
>>             slideshow, Brian
>>             >         for webcam feed)
>>             >         >  - projector screen (Christopher)
>>             >         >  - projector
>>             >         >  - USB drive with images (Christopher)
>>             >         >
>>             >         > DO:
>>             >         >  - Email NASA to get names on setup list(Chris)
>>             >         >
>>             >         >
>>             >         >
>>             >         >
>>             >         > We are missing a cardboard box full of stuff
>>             that was
>>             >         present at the
>>             >         > last launch
>>             >         > What we know is missing
>>             >         >  - G1
>>             >         >  - Package tracker
>>             >         >  - balloon
>>             >         >  - ziptie bag
>>             >         >
>>             >         >
>>             >         >
>>             >         >
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>>
>>         -- 
>>         Blake
>>         blake at blakebarrett.net <mailto:blake at blakebarrett.net>
>>         1 559 455 7855
>>
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