[islandlabs] HSinS Contest Launch: Thoughts, Comments, and Progress
burns at cshl.edu
Mon Aug 2 23:24:30 EDT 2010
Re: the phone:
Jonathan said that he handed it off to someone 2 meetings ago, who asked
aout setting it up.
He doesn't remember who.
Does anyone on the list know who picked up the phone?
Re: Being at the office:
Jonathan ended up having to meet his parents after a long vacation.
Re: Other meeting places:
We could meet tomorrow (Tuesday) at Cold Spring, at 500_Sunnyside in
woodbury, or at Lori's place in Deer Park.
Pick a time.
Any other ideas/locations?
> -----Original Message-----
> From: Joe [mailto:toolfox at gmail.com]
> Sent: Monday, August 02, 2010 11:15 PM
> To: Burns, William
> Subject: Re: HSinS Contest Launch: Thoughts, Comments, and Progress
> On Monday, August 02, 2010 11:27:39 am you wrote:
> > > * Helium - We talked about getting a 300 cuft monster
> tank again to
> > > cut down on the gas cost per flight. We need price quotes first
> > > thing Monday and a pickup sometime during the week.
> > I assume you want a quote from general welding.
> > I'll see what I can do.
> We could probably ask at a few places. Ya know...shop around
> for price a bit.
> Just because we originally went with a particular shop
> because they were open on Saturdays doesn't mean they have
> the best price.
> On the other hand, maybe they do. We also have a bit of a
> track record with them now.
> > >
> > > * Phone - I keep hearing that the original phone is "around
> > > somewhere," that the original phone "is found," and that the
> > > original phone is "is gone." Which is it? Do we really
> have it? Does
> > > it work? Can we load Instamapper on it and test it?
> > > Can we activate it with our BoostMobile account?
> > It might be buried in one of the balloon-gear bags. I'll look.
> Jonathan also said that it was in his office. Let's just find
> it and test it out.
> > > * Camera - We talked about running two spy cameras. This
> will save
> > > weight but run up cost. Are we going to run both as
> video? This will
> > > need two extra-big microSD cards, which will drive up the flight
> > > cost. If one camera will take still shots, we can
> probably get away
> > > with a really cheap and small microSD as the picture size
> is a bit
> > > small (1280x960?)
> > I thought we were going with an 8Gig microSD.
> True. 8 GB would be a bit tight for the length of the flight.
> Remember, the size of the files is about 2-1/2 GB per
> 30-minute segment. Three 30-minute segments takes up about
> 7-1/2 GB, so we're almost full. A 16-GB card will give us
> three hours of storage.
> There's an eBay store in Texas that's selling 16 GB cards for
> $27.50 with free shipping. I don't know what the speed class
> is, though...
> > and... I thought the only
> > option was for continuous video. How would still-frames be
> As I had said, build a simple dual 555 timer circuit that
> puts out a short pulse every 5 seconds. The short pulse fires
> a transistor thats hooked across the switch contacts of a
> spycam. This will simulate a "press 'n' release that takes a
> still picture.
> With still pictures, a smaller microSD card should do . This
> depends on the average filesize of the still photos that the
> spycam takes. I keep asking for this information, and nobody responds.
> > Jay came up with a link to an extremely low cost position reporting
> > system.
> > I don't know if we'll have time to build it, but it
> definitely seemed
> > worth the cost, and actually might be cheaper than the phone.
> I see nothing on the list about this. More info, please.
> > If possible, we should lauch a position reporting system
> with a phone
> > as backup, to prove-out the system.
> > If it's a success, the next launch would be with the position
> > reporting system only.
> A position (no pun intended!) that Amy and I have been
> championing for a few months.
> BTW, we've been working on a side project that, although not
> quite ready for prime-time, is far enough along for a
> possible demo. We firmly believe in "put up or shut up." We
> have not been able to "put up" until now, which is why we've
> been in "shut up" mode. We didn't want to get anybody's hopes
> up just to dash them.
> This is not for the contest launch, but for the subsequent
> launch. If all goes well, I might be able to demo something Wednesday.
> No guarantees, though. I still have to prep the dog and pony.
> > > A still camera has no way to auto-trigger...unless we build a
> > > 555 astable timer running a 5-second cycle and hook the
> output to a
> > > transistor across the camera's shutter button.
> > > This needs to be done NOW.
> > >
> > > I can make these mods if I can get ahold of the cameras
> this weekend.
> > Whups. The weekend is gone.
> > I've got cameras.
> So does Jonathan. He said he was going to be in his office
> this afternoon working on launch-related stuff. We got there
> about 5:30, but no one was around. onathan's phone was off as well.
> > Where/when/if you want to meet...
> > Ideally, we should pick a location where we could have future
> > (non-office) lab meetings.
> So we should pick somewhere. Where?
> > > * On-board power - I suggested a single,central battery pack that
> > > can supply the on-board systems by tapping various
> combinations of
> > > batteries for whatever voltages are needed.
> > > If this won't work easily with the phone, we can always
> fall back to
> > > the Duracell USB charger we used in the past. Do we have one?
> > Yes. There's a chance we'll have to gimmick-up a USB
> connector for it
> > though. We seem to be short on cables.
> > Also... Lori has a minty-boost.
> > It costs a lot more than the USB charger.
> > We should look at the parts on it to see if we can build
> one cheaply
> > and/or see if the duracell charger can be bought online
> 'cause they're
> > not in stores any more.
> > And... If we're going to use a 555, and/or other circuitry,
> how are we
> > assembling things? breadboards are relatively heavy and
> failure prone.
> > Does anyone have perf-board? (I've never used it)
> I can take care of this. I've been soldering for close to 40
> years now. I've built perfboard assemblies. Let the guy with
> the dirt under his fingernails handle it. ;-)
> BTW -- any reason this was sent to me privately and not to
> the list for archival?
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