SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-18T21:21:25-06:00SparkFun ElectronicsPearce on High Altitude Balloon Project - Part 2Pearceurn:uuid:811e672e-1d53-bed4-7875-9f9f507666bb2010-07-19T11:57:46-06:00<p>Are you able to watch it from the vimeo page? <a href="http://vimeo.com/11907761" rel="nofollow">http://vimeo.com/11907761</a><br>
If not, it's more than likely an issue with your flash plugin.</p>
HomeBrewer10 on High Altitude Balloon Project - Part 2HomeBrewer10urn:uuid:1fa850e7-1eb6-ed43-9850-5a5774fe0cb52010-07-19T10:55:49-06:00<p>Am I missing something? I have been wanting to see the video, but it never appears. I use Firefox. Is that an issue?</p>
DaveP on High Altitude Balloon Project - Part 2DavePurn:uuid:fd74b23e-9cd9-8540-08cf-2138c6889d372010-07-17T11:55:51-06:00<p>As far as the answers to those questions, any answer I would give would have no authority behind it, so I would rather not post my interpretation. Generally, posting an interpretation of these regs only leads to discord anyway.<br>
I can tell you, though, that both the DIY UAV and the HAB communities appreciate people who thoughtfully attempt to avoid ruining these great hobbies for everyone else.<br>
P.S. It looks like my link to AC 91-57 is broken... here's a shortened one: <a href="http://bit.ly/crcCqI" rel="nofollow">http://bit.ly/crcCqI</a></p>
DaveP on High Altitude Balloon Project - Part 2DavePurn:uuid:17251f79-ff56-775c-21a7-564702d0aa992010-07-17T11:51:57-06:00<p>So, here's the rub: the official FAA docs still point to AC 91-57 as the document governing recreational (non-commercial or non-government) UAVs, including R/C aircraft. AC 91-57 "encourages voluntary compliance," and was last updated in 1981! So, is it a regulation or not?<br>
As far as the legality of flying a HAB, that's covered in FAR 101, a good translation can be found here: <a href="http://eoss.org/pubs/far_annotated.htm" rel="nofollow">http://eoss.org/pubs/far_annotated.htm</a> (mentioned by nect above). See the first footnote, in particular. So, given the size, weight, etc. of systems made with ArduPilots (see <a href="http://www.diydrones.com/" rel="nofollow">http://www.diydrones.com/</a>, and specifically <a href="http://diydrones.com/profiles/blog/show?id=705844%3ABlogPost%3A28583" rel="nofollow">http://diydrones.com/profiles/blog/show?id=705844%3ABlogPost%3A28583</a> for their legal interpretation) and SparkFun's UAV Dev Boards (<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=9038" rel="nofollow">http://www.sparkfun.com/commerce/product_info.php?products_id=9038</a>), could one legally loft an autonomous controlled-flight recovery system? If so, go back to the first question on where UAV regulations come in to play... does separation from the balloon represent a transition from FAR 101 guidelines to AC 91-57 guidelines? What about the fact that anything above ~60k' is Class E airspace?</p>
DaveP on High Altitude Balloon Project - Part 2DavePurn:uuid:90d423e9-a87b-a4a8-6661-115e18fcba332010-07-17T11:50:47-06:00<p>Let's start with this awesome New Zealand company, which has already made the evolutionary leap... <a href="http://www.gpsboomerang.com/" rel="nofollow">http://www.gpsboomerang.com/</a> (NZ regs are clear, and more permissive than US regs). Also, a gentleman in Canada did something similar in 2003 <a href="http://www.members.shaw.ca/sonde/" rel="nofollow">http://www.members.shaw.ca/sonde/</a>.<br>
As far as legality goes, see the FAA fact sheet on UAS's here: <a href="http://www.faa.gov/news/fact_sheets/news_story.cfm?newsId=6287" rel="nofollow">http://www.faa.gov/news/fact_sheets/news_story.cfm?newsId=6287</a>. However, see <a href="http://www.faa.gov/about/initiatives/uas/reg/media/uas_guidance08-01.pdf" rel="nofollow">http://www.faa.gov/about/initiatives/uas/reg/media/uas_guidance08-01.pdf</a> and <a href="http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/1acfc3f689769a56862569e70077c9cc/" rel="nofollow">http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/1acfc3f689769a56862569e70077c9cc/</a>$FILE/ATTBJMAC/ac91-57.pdf for more information on recreational UAVs.</p>
ThatOtherOtherGuy on High Altitude Balloon Project - Part 2ThatOtherOtherGuyurn:uuid:9e127ae9-5882-f682-67d3-06213f2b32ca2010-07-17T08:00:55-06:00<p>Dave, Can you speak to this more or provide a link with more information? I think the next step in the evolution of BalSats is for them to upgrade the igloo coolers to Arduino controlled drones that then descend in controlled flight. I hope the current regulatory environment does not prohibit this.</p>
DaveP on High Altitude Balloon Project - Part 2DavePurn:uuid:42bec7ca-536d-1ebf-f34c-203350cab90e2010-07-16T12:37:16-06:00<p>Not sure that fans would be the most efficient approach, but controllable descent is possible by hooking your payload up to something like this: <a href="http://www.youtube.com/watch?v=5YIXO_Cx0E8&feature=player_embedded" rel="nofollow">http://www.youtube.com/watch?v=5YIXO_Cx0E8&feature=player_embedded</a>. Be careful, though: at best, the legality of such an approach is controversial.</p>
russosv on High Altitude Balloon Project - Part 2russosvurn:uuid:9be31165-2184-9521-4b63-e07558670e852010-07-16T10:56:34-06:00<p>This is so cool!<br>
My gut says this is a stupid question, but I'm going to ask anyway!<br>
Is there any way to "steer" the payload down while it's on the parachute? I'm imagining hooking up some large PC fans and using the microcontroller with PWM to guide the payload using GPS coordinates. Any ideas?</p>
another-dave on High Altitude Balloon Project - Part 2another-daveurn:uuid:a69087e6-ccd3-b0a2-f3c2-27f31771932c2010-07-15T16:22:54-06:00<p>now you know why we want a low cost GPS module that good to high (>60Kft.) altitude. Your payload would have told you were it was.</p>
Allen on High Altitude Balloon Project - Part 2Allenurn:uuid:73042c77-6579-cea2-0946-6f644186b7d62010-07-14T13:38:56-06:00<p>Taking a look at the data CSV file it is interesting to see what I am guessing to be internal payload temperature drop and then start to rise with higher altitude. I am guessing you must have had some kind of internal heat source and despite the colder temperature at higher altitude the thinner air was pulling away less heat. Maybe stronger sunlight was contributing to heating up the payload?</p>
RPCElectronics on High Altitude Balloon Project - Part 2RPCElectronicsurn:uuid:08da60f3-2a29-878c-83b9-ffe834a3567a2010-07-14T13:28:55-06:00<p>Correction! The photo shown was of someone ELSE'S setup. Sorry about that! But I still hope to see youins fly APRS on one of your future payloads.</p>
RPCElectronics on High Altitude Balloon Project - Part 2RPCElectronicsurn:uuid:00e33971-597d-e074-e6cf-0c88022b30ac2010-07-14T13:26:37-06:00<p>I noticed in one of the details pictures, there was an OpenTracker 1+ APRS module in there. That is the same module that out RTrak-HAP high altitude payload is based on. It was in the picture, but the detailed description failed to even mention it or APRS being used for tracking. Was this intentionally left out?</p>
brennen on High Altitude Balloon Project - Part 2brennenurn:uuid:4f26ce04-a74f-b37a-70fb-ca3fd271b8ea2010-07-14T11:09:02-06:00<p><a href="http://www.flickr.com/photos/p1k3/sets/72157624101959976/" rel="nofollow">Here ya go</a>.</p>
WhoKnew? on High Altitude Balloon Project - Part 2WhoKnew?urn:uuid:c83b59a1-a5bc-99ab-6ed2-ec39f2f6cb5f2010-07-14T10:57:14-06:00<p>Oh Yeah! Thanks!</p>
JasonJ82 on High Altitude Balloon Project - Part 2JasonJ82urn:uuid:6ffaec74-56ba-ff62-3d14-6a8779ca24c22010-07-14T10:30:42-06:00<p>how far did the camera go? (altitude and the deviation from where you guys first let it go) also, any pictures of the recovery site of the camera and equipment??? :)</p>
ShaunO on High Altitude Balloon Project - Part 2ShaunOurn:uuid:891b15a0-f7b5-2925-4f6f-6dbb333a3f262010-07-14T09:14:04-06:00<p>Hi nect,<br>
These projects almost always include a parachute; especially if they ever hope to recover the camera.<br>
It just doesn't look like it in the video because of the high altitude. There's very little air resistance until much further until the fall. Once it starts hiting the right atmosphere, the speed will drop dramatically.<br>
Trust me, no-one wants to see people or property damaged, any more than they want to find the remains of their payload in a small crater.</p>
nect on High Altitude Balloon Project - Part 2necturn:uuid:31d423f4-633d-0728-29a1-6810e72885be2010-07-14T05:52:33-06:00<p>Just as a further illustration to my previous question for other people thinking about doing this. A lot of times operators will point to minimal payload weights as a justification for not taking appropriate precautions to minimize risk. I.e. the rules do not apply to me because I'm so small.<br>
But if you look here:<br>
<a href="http://www.eoss.org/pubs/far_annotated.htm#_ftn1" rel="nofollow">http://www.eoss.org/pubs/far_annotated.htm#_ftn1</a><br>
There is a section 101.7 which applies to any operation and states:<br>
?101.7 Hazardous operations.<br>
(a) No person may operate any moored balloon, kite, unmanned rocket, or unmanned free balloon in a manner that creates a hazard to other persons, or their property.<br>
(b) No person operating any moored balloon, kite, unmanned rocket, or unmanned free balloon may allow an object to be dropped therefrom, if such action creates a hazard to other persons or their property.<br>
So I would caution against posting videos of free falling objects, and limit the risk of even having them (installing parachutes, etc).</p>
nect on High Altitude Balloon Project - Part 2necturn:uuid:d34f307b-ad3c-19d6-7c4c-3a34f05340cd2010-07-14T05:38:54-06:00<p>So do you worry about equipment falling and damaging anything (or anyone)? Are there steps taken to mitigate that risk?</p>
FunkyMonk on High Altitude Balloon Project - Part 2FunkyMonkurn:uuid:5a86bad5-91ad-0043-ebfe-81ec076ba90b2010-07-14T00:46:07-06:00<p>Great job! How about doing this at night or dusk? It may turn out to be boring for the first 20,000 feet or so, but once you get to the upper atmosphere I would suspect you would see some dazzling stars.</p>
Alfonso82 on High Altitude Balloon Project - Part 2Alfonso82urn:uuid:961b562b-ca57-ea80-a6c1-4a4d3d643cc72010-07-13T21:17:56-06:00<p>Absolutly awesome David, I think that I just found my next project ;), I just hope that my ballon get?s some shots of an UFO :D.</p>
Nate on High Altitude Balloon Project - Part 2Nateurn:uuid:ff4a1821-cf6f-bc7c-7fbe-41189d5f9c012010-07-13T17:27:09-06:00<p>Longest recovery time: 815 days. Wow. Let's hope we hear about our balloon some time in the next 2 years!</p>
Nate on High Altitude Balloon Project - Part 2Nateurn:uuid:892b4a55-da17-b02d-3c81-a5a34e9159262010-07-13T17:22:30-06:00<p>Hi Stephen - If I do ever find my balloon, I'll be sure to post everything we can recover from the logs.</p>
DaveP on High Altitude Balloon Project - Part 2DavePurn:uuid:4497fc7a-7c08-01fb-7b87-804ba2b46d462010-07-13T16:53:04-06:00<p>If you're interested in a list of records currently held in the HAB community, check out this page: <a href="http://www.arhab.org/ARHABrecords.htm" rel="nofollow">http://www.arhab.org/ARHABrecords.htm</a></p>
aqua_scummm on High Altitude Balloon Project - Part 2aqua_scummmurn:uuid:b640cdc8-10e9-270c-6f82-fd37830d9d602010-07-13T14:00:14-06:00<p>Any chance of a sparkfun contest coming out of this? HAB race to 10,000 feet? Prizes for highest altitude, longest flight, etc?</p>
aqua_scummm on High Altitude Balloon Project - Part 2aqua_scummmurn:uuid:fd95316a-342b-a5ce-eff7-327129c623b52010-07-13T13:54:02-06:00<p>It would be awesome to have all the important bits on some sort of foam glider. Make it really stable and set the rudder to a half mile turn radius, and see how much time it's able to descend in a controlled glide... The footage would be awesome too.<br>
You could put the whole thing in a basket so it falls out when it inverts and tumbles.</p>
StephenWong on High Altitude Balloon Project - Part 2StephenWongurn:uuid:c4eded1f-8c6a-7c32-648f-304a74d56be72010-07-13T13:33:33-06:00<p>Nate,<br>
Regarding using the magnetometer at 50-100k feet altitudes. Did you have issues with the magnetometer giving you inaccurate readings due to the distance you are away from the Earth's magnetic poles?<br>
I'm very interested in taking a look at your IMU data if you manage to collect it even losing the balloon.<br>
Thanks<br>
Stephen</p>
stilldavid on High Altitude Balloon Project - Part 2stilldavidurn:uuid:93bbeada-20dc-2614-4eaa-c8792362c27c2010-07-13T13:21:42-06:00<p>The camera stopped recording on the decent for some unknown reason, but it did survive the impact and still records beautifully!<br>
I mounted it to my helmet for a bike ride up at <a href="vimeo.com/11830214" rel="nofollow">Hall Ranch</a> near Boulder, CO. I accidentally recorded in a low quality setting, so it's not as clear as the balloon video, though. I can't recommend the camera enough!</p>
stilldavid on High Altitude Balloon Project - Part 2stilldavidurn:uuid:5d386f9d-2312-92ea-5a00-5221277da0772010-07-13T13:19:28-06:00<p>Yeah, one of the first things I did :) You can see an overview on <a href="http://www.flickr.com/photos/stilldavid/4628722258/" rel="nofollow">this flickr photo</a> and download a <a href="http://stilldavid.com/highaltitude/launch-one/balloon.kml" rel="nofollow">KML file</a> to.<br>
The GPS unit didn't properly record the altitude (which made tracking fun...) but that is why the readings are all wonky.</p>
Robomaniac on High Altitude Balloon Project - Part 2Robomaniacurn:uuid:96e7ac38-5f0f-df83-7f62-f9dcd01e4a832010-07-13T13:03:24-06:00<p>That is very beautiful footage! Thanks for sharing!</p>
amando96 on High Altitude Balloon Project - Part 2amando96urn:uuid:b1c092f2-6856-3cc4-462d-64d70bb3139e2010-07-13T12:33:52-06:00<p>Very good, did the go pro survive the impact? I was going to buy one of those cameras for my mountainbiking.they seem strong.</p>
Bob14 on High Altitude Balloon Project - Part 2Bob14urn:uuid:9c7c11c0-9f8d-6e18-f2b0-81a1a9b227192010-07-13T12:17:02-06:00<p>See someone already did that.<br>
Will play with that data anyway see what looks cool.</p>
Bob14 on High Altitude Balloon Project - Part 2Bob14urn:uuid:8b0468eb-91b5-d254-7bb0-fd6959af27442010-07-13T11:57:59-06:00<p>Phenomenal footage!<br>
Took a look at the data, if I have time I may try to plot the path on Google Earth just for grins :-)</p>
stilldavid on High Altitude Balloon Project - Part 2stilldavidurn:uuid:982a9ea1-d56f-f41c-03e4-69ff42327d1c2010-07-13T11:25:52-06:00<p>I didn't do anything special, no. For the next launch, and as per <a href="http://www.sparkfun.com/commerce/news.php?id=389#comments" rel="nofollow">DaveP's recommendation</a>, I think I'll add a carbon fiber kite rod with a small weight to increase the angular moment of inertia to reduce spinning. He claims to have launched in 25mph wind with usable video.<br>
I should mention that the video above was intentionally cut to points where spinning was minimal; most parts of the video during ascent were in a vomit-inducing spin, and of course the decent was lots of tumbling.</p>
OldFar-SeeingArt on High Altitude Balloon Project - Part 2OldFar-SeeingArturn:uuid:923a55b5-9d70-6552-898e-57adffdfb78f2010-07-13T10:50:46-06:00<p>David,<br>
Nice work! I'm curious about whether you had any sort of fins to slow down the spinning. The video on the way up did not seem to have as much spinning as many of the other videos I've seen on the net of high altitude balloon projects.</p>
Tori on High Altitude Balloon Project - Part 2Toriurn:uuid:dbfc9cd5-d685-657d-5472-8da70ac0304b2010-07-13T10:48:31-06:00<p>That's like the best burst video ever recorded.</p>
stilldavid on High Altitude Balloon Project - Part 2stilldavidurn:uuid:be2e19ee-8209-9cb3-efb0-fa4d886b43ec2010-07-13T10:02:00-06:00<p>Hey WhoKnew?,<br>
There are some graphs and more pictures at the <a href="http://www.flickr.com/photos/stilldavid/sets/72157624101347600/" rel="nofollow">photoset on flickr</a> and a CSV of all the data logged is available <a href="http://stilldavid.com/highaltitude/launch-one/flight1-full.csv" rel="nofollow">here</a> if you're interested.</p>
stilldavid on High Altitude Balloon Project - Part 2stilldavidurn:uuid:181439a6-b3f2-5546-53b6-e854efbf59752010-07-13T10:00:02-06:00<p>I can work on getting the full video up somewhere. It's a few hours of 1080p video, and weighs in at around 20GB, so I might have to drop it on S3 or something.<br>
Unfortunately the video cuts out about 15 minutes into the fall for no apparent reason, so it didn't record the impact. But trust me when I say that it's tough to watch more than a few seconds of it at a time - it's dizzying to say the least!</p>
WhoKnew? on High Altitude Balloon Project - Part 2WhoKnew?urn:uuid:570bc6d3-ee47-843c-4dd8-cb29fde8f05e2010-07-13T09:58:17-06:00<p>AWSOME!!!!!!!<br>
Was any data recorded like altitude and outside temperature?.</p>
Snacks on High Altitude Balloon Project - Part 2Snacksurn:uuid:76803787-ddbc-bb5d-63f8-dd2a35615b832010-07-13T09:58:02-06:00<p>Me too! Does anyone know where to find the full video?</p>
Conrthomas on High Altitude Balloon Project - Part 2Conrthomasurn:uuid:0b6e7177-b272-0925-1ab6-78560dcfdb2a2010-07-13T09:52:33-06:00<p>^^^I second it! Seeing the whole fall would be awesome.<br>
And I love how you can see the balloon shreds for a second before it goes into a death spiral.</p>
Coyote on High Altitude Balloon Project - Part 2Coyoteurn:uuid:bd328220-9218-84d3-d336-79d64937ab952010-07-13T09:40:53-06:00<p>That's awesome!<br>
I wanna see the entire fall! (although a bit dizzying)<br>
I thought I was gonna see the ISS swing by. :)</p>
RoHS on High Altitude Balloon Project - Part 2RoHSurn:uuid:ebbd9f3d-ef9c-28ff-6e0f-6df7af9209332010-07-13T09:20:10-06:00<p>Super awesome video David!</p>
SteamAtom on High Altitude Balloon Project - Part 2SteamAtomurn:uuid:de898afa-4744-79cd-624d-24a4232cee192010-07-13T09:17:36-06:00<p>You should also check out the real challenge of high altitude ballooning - long duration flight - <a href="http://spiritofknoxville.com" rel="nofollow">http://spiritofknoxville.com</a></p>