​ ​ ​ ​ Picaxe-based Satellite: PongSat-18X - Page 3
Page 3 of 6 FirstFirst 1 2 3 4 5 ... LastLast
Results 21 to 30 of 59

Thread: Picaxe-based Satellite: PongSat-18X

  1. #21

    Default

    Any Ideas when the flight will take place?

  2. #22
    Senior Member
    Join Date
    Jan 1970
    Location
    Groningen, The Netherlands
    Posts
    466

    Default

    JPAerospace is planning for the release right now, and seems to have resolved some technical issues that blocked the flight to be performed earlier. Still some weeks, probably

    /Jurjen

  3. #23

    Default pongsats

    Hi folks,

    We launched a half dozen picaxe based "pong sats" just over a year ago. There is a rudimentary link at:
    http://profmason.com/?p=275
    Some day I will get the students to post the rest of the documentation.

    The one piece of advice I wish I had known....... It gets VERY cold at altitude. We used small lithium batteries producing around 4 volts. As they cooled down the voltage dropped which meant that the processors shut down. You will want to either
    1. Insulate your batteries.
    2. Heat your batteries.

    Be sure to test in the freezer.

    good luck!
    mmason

  4. #24
    Senior Member
    Join Date
    Jan 1970
    Location
    Groningen, The Netherlands
    Posts
    466

    Default

    I became aware of the low temperatures (and other harsh conditions) through Paul L. Verhage's on-line book (in particular Chapter 8, "Near-Space Experiments): http://www.parallax.com/tabid/567/Default.aspx. This caused me to look for special batteries, and I was lucky to found the appropriate one in 1/2 AA size, which is the one that is used in our PongSat-18X. Paul's book is definitely worth reading.

    We appear to be close to launch right now, see http://www.jpaerospace.com/blog/

    /Jurjen

  5. #25
    Senior Member
    Join Date
    Jan 1970
    Location
    Groningen, The Netherlands
    Posts
    466

    Default

    Happy to say that we are still fully in the race (and the launch will be soon now), as I got direct confirmation from JPA Ground Control this morning that all of our PongSats arrived happily and in working condition! This is a great relief because it is the first confirmation that our stuff passed international borders unspoiled.

    There is proof too! John Powell put some nice pictures for the Away 35 on their site (http://www.jpaerospace.com/blog/) and the first photo shows that our NLSE-1 got a VIP seat!

    This is getting up to speed now ..., stay tuned ;o)

    Regards,
    Jurjen

  6. #26
    Senior Member
    Join Date
    Jan 1970
    Location
    Groningen, The Netherlands
    Posts
    466

    Default

    They are heading for the desert right now, towards the launching location (http://www.jpaerospace.com/blog/)

    /Jurjen
    Last edited by kranenborg; 15-08-2008 at 21:53.

  7. #27
    Senior Member
    Join Date
    Jan 1970
    Location
    Groningen, The Netherlands
    Posts
    466

    Default

    Our PongSat has been recovered ! (5th picture): http://www.jpaerospace.com/blog/

    /Jurjen

  8. #28

    Default Successfull data retrieval !!!

    Hi
    I am Jurjen's son Joost.
    When I saw the big cardboard box on the kitchen table I knew it was from JPAerospace containing our pongsats.
    The pongsats were still intact and we managed to get all data out of the chip. It funcioned throughout the whole journey! Almost all sensors gave us a lot of information (for example the temperature and movement sensors; The minimum temperature was -56 degrees C and the inversion layer was clearly visible in the graph). We are now analysing the data in more detail and trying to make some more conclusions. We already know that the battery power didn't even get close to the minimum voltage level required. We will soon add some pictures and photos on the forum.

    ---jobapi---

  9. #29

    Default

    CONGRATULATION! Great project.

  10. #30
    Technical Support
    Join Date
    Jan 1970
    Location
    UK
    Posts
    23,554

    Default

    @ Jurjen and Joost : Well done and I'm glad all your hard work has been rewarded. You can be justly proud of what you've accomplished. Great teamwork too.

    It's said, "the sky's the limit", so what's next ?

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •