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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YEO43V5RVMTOUK2XC4U7PUMNSLELQWMG/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "CAJEM477h5e_nMbnKGAbvYGsRujaMrehaEVKJQNU0QDg+rGAe2A@mail.gmail.com",
    "message_id_hash": "YEO43V5RVMTOUK2XC4U7PUMNSLELQWMG",
    "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": "2013-02-24T03:19:14Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/UZQUWYOGQZVZYV76CEGJ4GYOQ3J2LT7R/",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/CBSU33MREDBJKHK7AL7Y7ER65NUV33RM/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "I hope it is evident, I am not focusing on the\ncontroller/microcontroller/computer interface/az-el controller/etc. The\nreal issue is how cheaply can an antenna be mounted on a kingpost somewhere\non a surface, with a view towards the sky, and how conveniently can that\nmount be motorized, with a sensor to give feedback to the ground station.\nelectronics, seem to be, (apologises to EE friends) a dime a dozen, cheaper\nif made in hundreds, but the key drawback of any design is the mechanical\nand electromechanical (can we use, mechatronics) system that serves as the\nactuators. I am not referring to a hand held antenna assembly, but rather\nsomething that we can all use in cold/hot weather and that can be put\ntogether by one / two persons on an average post.\n\nComments welcome, I think the future holds bright for amsats and edu based\ncubesats.\n\n\n-samudra\n\n\nOn Sat, Feb 23, 2013 at 9:50 PM, Lizeth Norman <[email protected]>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 author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>\n",
    "attachments": []
}