High altitude balloon payload, from Sable-3 discussion |
High altitude balloon payload, from Sable-3 discussion |
Oct 12 2007, 01:55 PM
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#106
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Yes...Ad astra per scientiam, Doug! ...and please remember to let go of it at launch while both of your feet are on the ground...
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Oct 14 2007, 11:32 PM
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#107
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Some more bits and pieces have arrived - but there are still a lot of 'unknown unknowns' that we'll need. Thus ignore the %'ge at the end...it's a flawed figure anyway as each step from 1 to 7 probably requries as much time and effort as the cumulative time and effort of all previous steps. I'll do a Vodcasty thing this week - a UMSFB1 Show and Tell.
Doug |
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Oct 14 2007, 11:41 PM
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#108
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Time to start a naming contest yet?
To make things different, you could require people justify the name choice by writing a haiku in its support --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Oct 15 2007, 04:27 AM
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#109
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Senior Member Group: Members Posts: 1281 Joined: 18-December 04 From: San Diego, CA Member No.: 124 |
elakdawalla
will doug let us really do haiku named balloon? -------------------- Lyford Rome
"Zis is not nuts, zis is super-nuts!" Mathematician Richard Courant on viewing an Orion test |
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Oct 15 2007, 11:09 AM
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#110
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Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
Time to start a naming contest yet? And to start taking entries for the compulsory 'fly your name to...' -------------------- |
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Oct 15 2007, 01:03 PM
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#111
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Just popped home - the mirrors have arrived - that's all the prospective imaging payload in place - except a final choice on powering them.
The naming is one of those messy things that I've simply eradicated by acronym deployment. UMSFB1 (then 2, 3, 4, 5 etc) And as for flying your name...there will be just one name flying onboard - it shouldn't take a genius to figure out who's (given the sort of flight involved) but not quite sure how to action that just yet. Doug |
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Oct 15 2007, 05:23 PM
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#112
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
PICAXE AHOY
Got a few relays, and a buzzer, and some AA battery holders today. Wasn't getting 4-5v out of the 3xAA battery holder that the picaxe kit came with - so I got a 4 cell holder, put NiMH's in it ( 5.2v measured ) - and bingo - I was able to program it via the USB cable. Did a few BASIC programs that triggered the buzzer - and bingo CODE main: high 1 pause 250 low 1 pause 1000 goto main 'Bzzz............Bzzzz' OOo CODE main: high 1 pause 50 low 1 pause 100 high 1 pause 50 low 1 pause 200 high 1 pause 50 low 1 pause 100 high 1 pause 50 low 1 pause 1000 goto main "Bzz.Bzz....Bzz..Bzz......" YAY! Maybe tonight, but certainly later this week ,I want to hook that same 'bzzz' onto a couple of different types of relay I've got - see if they'll do the job for the cameras. Doug |
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Oct 15 2007, 07:43 PM
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#113
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Founder Group: Chairman Posts: 14432 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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Oct 15 2007, 08:06 PM
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#114
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
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Oct 15 2007, 09:26 PM
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#115
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Mr & Mrs Latex.
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Oct 15 2007, 09:39 PM
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#116
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
I'm hoping that somewhere obvious on it will be a name. As in "If found please return to Doug Ellison....."
Or maybe you should specify on which side of the Channel -- Doug in the UK, Climber or Ant103 in France. -------------------- If Occam had heard my theory, things would be very different now.
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Oct 15 2007, 09:58 PM
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#117
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
One of the payloads that they let aloft from Cambridge made it to Denmark - and was returned
Doug |
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Oct 15 2007, 10:03 PM
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#118
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Better include Bjorn's contact info, just in case.
-------------------- If Occam had heard my theory, things would be very different now.
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Oct 15 2007, 10:24 PM
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#119
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Just contacted the CAA ( UK's version of the FAA ) asking for regs on unmanned balloons, offering to launch when and where suits them, rather than stipulating such things from our end.
Meanwhile, I"m hoping that by this weekend, I will be able to have all cameras breadboarded ( three internal and one external ). I'll be switching to pairs of AA Lithium (low temperatures, what low temperatures - they just don't care) cells in series ( to give me the 3v that the cameras require ) but probably four pairs for the three cameras, a further two in parallel for the GMC, and three or four for the PicAxe. The APRS will be off a single 9V Doug |
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Oct 19 2007, 07:39 AM
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#120
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Video Update 1 - Envelope, Parachute, Gondola
http://youtube.com/watch?v=rkug-Z9Xm5Q Video Update 2 - Cameras http://youtube.com/watch?v=gu3P3O3Z3eU Update 3 - Tracking - on it's way later. |
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