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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/QUG63LYOCVIAGMEUDW3JD4533SLMVIRV/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "000901c74196$a492c350$c4e6fea9@WA4SCA",
    "message_id_hash": "QUG63LYOCVIAGMEUDW3JD4533SLMVIRV",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/ZZRRGDBNSYAW7ETREH5EOTWM6T52Q3ST/",
    "sender": {
        "address": "APBIDDLE (a) UNITED.NET",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Alan P. Biddle",
    "subject": "[amsat-bb] Re: G5500 / SatPC32 / Rotor control",
    "date": "2007-01-26T22:09:26Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/ZZRRGDBNSYAW7ETREH5EOTWM6T52Q3ST/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Steve,\n\nI have used a Labjack U12 with a NLSA Piggyback board, which can be seen\nhere:  http://www.nlsa.com/labjack/labjack_piggyback.html  It was an\nabsolutely plug and play system, powered by the USB port, which would give\nyou 12 bit ADCs.  It is supported by NOVA and SATPC32, among other tracking\nprograms.  Serial and parallel ports are slowly going away.  My new desktop\ncomputer has neither, though I have installed some PCI cards to give me back\nsome functionality.  Of course there are USB converters, but I liked\nsomething which eliminates the possible need for yet another lump of\nelectronics.  ;)  \n\nUnfortunately, it looked as if the Labjack people had discontinued the U12,\nand as you will see above, NLSA is no longer carrying the Piggyback board.\nIt was one of the great bargains, BTW.  Labjack has done another U12\nproduction run, and apparently plans to keep it available as long as there\nis sufficient demand.  Anyway, it is not hard to home brew an interface\nbetween the U12 and the antenna controller, even using discrete transistors.\nHowever, on the SATPC32 web site, is an originally developed schematic,\nusing a very standard buffer chip.  No PC board, but you could easily\nduplicate it on a bit of perf board.  The driver chip and the 8 pin DIN jack\nare not Radio Shack parts, but you can get them at most parts sources.\nExclusive of shipping, about $10 for everything except the DIN cable.  Of\ncourse you will need to get the U12, but this is still a very reasonable\ncost given the performance.  So if you are willing to do a bit of very easy\nconstruction, the combination is definitely worth a look.\n\nAlan\nWA4SCA\n\n    \n\n\n",
    "attachments": []
}