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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/NW53CE4FTP3WRU4B5EEKPCK5Z77WD45S/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "CAJEM476Y4Vs2s1R3w9pWqb7P13TUVkQSwJCew02m1qtX5X82aA@mail.gmail.com",
    "message_id_hash": "NW53CE4FTP3WRU4B5EEKPCK5Z77WD45S",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/FPQ3IOK7YULKQEKW67HZNRPRRJI64S2V/",
    "sender": {
        "address": "samudra.haque (a) gmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Samudra Haque",
    "subject": "[amsat-bb] Re: inquiry about homebrew az-el systems",
    "date": "2013-02-24T04:03:24Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/CBSU33MREDBJKHK7AL7Y7ER65NUV33RM/",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/F55EW5FB3PA7MSS7KWT65EKXSXL2QTMO/",
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/CC6OQSC6P6VLHM5DSTG3ZL42OM27IEYQ/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "hi, thanks for addressing this question. And I invite others to\nparticipate, or get in touch with me for a phone conversation, and discuss\nsimple steps that can be taken IMHO within 50-100 USD. I suggest we adopt\nAMSAT friendly tips:\n\nhttp://www.amsat.org/amsat-new/tools/downloads/iROTOR.pdf (will need\nadditional interface to PC, any kind)\n\n(cool idea, but only as concept)\nhttp://www.amsat.org/amsat-new/echo/Az_El_Pos.pdf\n\nhttp://dgg.gotdns.com/doc/XOX_rotor.pdf (Semi professional..)\n\nhttp://ka6puw.tripod.com/azimuth1.html <--- what do you think of this\nstyle? Looks simple enough.\n\nBut I have only done a simple google search here. Any other projects worth\ninvestigating? Focus on the \"mount\" only now.\n\n-samudra\n\n\n\n\n\n\nOn Sat, Feb 23, 2013 at 10:41 PM, Lizeth Norman <[email protected]>wrote:\n\n> Samudra,\n> This is a good question for a first year engineering student like\n> myself: How does one bring home the best bang for the buck out of an\n> engineering dollar?\n>\n> Feel free to ask around. A few on the list have driven unusual devices\n> to get antennas moved.\n>\n> How does a project get into the hands of people who will actually do\n> it? A one off I can do for you in my basement. Probably with parts\n> from radio shack, a grinder and a few hand tools.. A reproducible\n> project 10 years from now? Hardly likely.\n>\n> I submit to you that irrespective of the metalwork this is a simple\n> project as you propose, however it must be reproducible. With a\n> student copy of SolidWorks, a circular saw, drill and the Arduino IDE\n> it could be prototyped by two people in a weekend. Refining it so that\n> a relatively new ham with a smidgin of technical ability could do it\n> might take a little longer. These days with the internet and cad, the\n> real issue is the tooling. How do you design/layout such that it can\n> be done with snips/file/saw/fill in the blunt instrument here..\n> 73 es have fun..\n>\n> Norm n3ykf\n>\n>\n>\n>\n>\n> On Sat, Feb 23, 2013 at 10:19 PM, Samudra Haque <[email protected]>\n> wrote:\n> > I hope it is evident, I am not focusing on the\n> > controller/microcontroller/computer interface/az-el controller/etc. The\n> real\n> > issue is how cheaply can an antenna be mounted on a kingpost somewhere\n> on a\n> > surface, with a view towards the sky, and how conveniently can that\n> mount be\n> > motorized, with a sensor to give feedback to the ground station.\n> > electronics, seem to be, (apologises to EE friends) a dime a dozen,\n> cheaper\n> > if made in hundreds, but the key drawback of any design is the mechanical\n> > and electromechanical (can we use, mechatronics) system that serves as\n> the\n> > actuators. I am not referring to a hand held antenna assembly, but rather\n> > something that we can all use in cold/hot weather and that can be put\n> > together by one / two persons on an average post.\n> >\n> > Comments welcome, I think the future holds bright for amsats and edu\n> based\n> > cubesats.\n> >\n> >\n> > -samudra\n> >\n> >\n> > On Sat, Feb 23, 2013 at 9:50 PM, Lizeth Norman <[email protected]>\n> > wrote:\n> >>\n> >> Gus and the group:\n> >> Lots of birds going up in the next year. Success rate not 100% as it's\n> >> rocket science oftentimes on a budget. Hopefully we'll get a few out\n> >> of it.\n> >> The Arduino IDE install supports PPM. The nice thing about that\n> >> platform is that configuration is doable for just about all forms of\n> >> hardware that you might drive with it and scaling can be done in\n> >> software for the various different bits of kit.\n> >>\n> >> I am sure that with the appropriate development environment and having\n> >> the hardware on hand IN a well equipped lab, it should be a weekend\n> >> project to get running.\n> >>\n> >> The hard bit in my opinion is how to mount the antennas to the az/el\n> >> clockwork. Will require a little woodwork/metalwork to finish.\n> >>\n> >> Everyone who does this will have a problem with some phase of it.\n> >> Needs to be simple and repeatable.\n> >>\n> >> Norm n3ykf\n> >> _______________________________________________\n> >> Sent via [email protected]. Opinions expressed are those of the\n> author.\n> >> Not an AMSAT-NA member? Join now to support the amateur satellite\n> program!\n> >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n> >\n> >\n>\n",
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