High altitude balloon payload, from Sable-3 discussion |
High altitude balloon payload, from Sable-3 discussion |
Sep 26 2007, 11:16 PM
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
http://www.unmannedspaceflight.com/index.p...20&start=20
We began talkin about a UMSF balloon - and who know what might happen if enough people think about something hard enough, thoroughly enough and long enough. How's about this as a starting point. http://vpizza.org/~jmeehan/balloon/ with http://www.chem.hawaii.edu/uham/part101.html as an important regulatory start point (I'm going to look up the UK regs for this as well) http://www.srcf.ucam.org/~cuspaceflight/nova1launch.html is also very impressive - all done in the UK This http://www.makezine.com/blog/archive/2007/...video_podc.html is particularly impressive - I like the multiple-cameras slant. Anyway - thought I'd get a thread going - this is an idea I like too much to let it gather dust in a corner - the one thing that I think would be nice to achieve is self-portraiture of some sort - think Beagle 2's WAM etc....perhaps in a corner of the FOV of one of/the imaging system. What sort of limit's should we set ourselves? 1kg 10x10x20cm? (sort of 2U Cubesat-on-a-diet budget) Doug |
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Oct 15 2007, 07:43 PM
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
IT WORKS
I did a simple CODE main: high 0 pause 1000 low 0 wait 10000 goto main: The output of output zero was then wired to a bit of breadboard that powers a relay ( the top one - http://www.maplin.co.uk/module.aspx?Module...5&doy=15m10 ) . The Picaxe project board runs on 5v, and each output will handle 800 mA. The relay's coil is spec'd to be about 500 ohms - I'm measuring it at something like 480ish at the breadboard. So it draws a current of 10 mA for that second. The outputs of the relay then pop to another tiny bit of breadboard which I simply used to make it easier to hook up to the shutter release cables from the camera. The camera is hard-wired to the C-cell sized battery holder. At first it wasn't working - but then I realised I was asking it to to 'high 0' and then 'low 1' which was just stupid - the Gumby school of coding. But now - it works Attached - what our sofa looked like just after I turned it off. |
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