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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/OCBKNKAXE7J3N3XBOK47S4KYRPZWFEQO/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "OCBKNKAXE7J3N3XBOK47S4KYRPZWFEQO",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/GT7VLS4XAMHAZBZZ4V5D5N2QHHDHS44K/?format=api",
    "sender": {
        "address": "vk4tec (a) people.net.au",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Andrew Rich",
    "subject": "[amsat-bb] Re: [SPAM]  RE:  Re: Making your own rotator controller",
    "date": "2007-12-31T13:14:31Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/262D25BEWU5KNPD3RX62QPRY2WPED4JX/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/NSE3QAU3GEQTQFN6X5YL4SCP4KODOBWM/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Is there a one stop shop for the LVB ?\n\n\n----------------------------------------------------------------------------\nAndrew Rich VK4TEC\[email protected] <mailto:[email protected]>\nhttp://www.tech-software.net\n\n\n\n\n-----Original Message-----\nFrom: Howard Long [mailto:[email protected]]\nSent: Monday, 31 December 2007 11:13 PM\nTo: [email protected]; 'Henk, PA3GUO'; [email protected]\nSubject: [SPAM] RE: [amsat-bb] Re: Making your own rotator controller\nImportance: Low\n\n\nHi Andrew\n\nAs well as sending commands to the rotator controller, most prediction\nsoftware also polls the rotator controller for some indication of feedback\nfor the user, and sometimes it is also used to detect stalling (protecting\nyou, for example, in the nightmare scenario whereyour rotator wraps itself\nup in the feeder).\n\nBTW, I've heard the LVB tracker is very good ;-)  and the v0.8 firmware\nworks with Predict.\n\nIn the LVB tracker I average sixteen or so ADC samples over time to get some\nkind of sensible value. Either that or I could pop a 10uF cap on the Az/El\nPIC ADC inputs, but software was cheaper.\n\n73, Howard G6LVB\n\n-----Original Message-----\nFrom: [email protected] [mailto:[email protected]] On\nBehalf Of Andrew Rich\nSent: 31 December 2007 10:51\nTo: Henk, PA3GUO; [email protected]\nSubject: [amsat-bb] Re: Making your own rotator controller\n\nI got an idea.\n\nAt the moment, most systems have some sort of PC sending data to a\ncontroller which makes decisions.\n\n1. Antenna pot goes to A/D on PIC\n2. PIC is told from com port where it should be 3. PIC makes up its mind to\nturn left or right.\n4. Relays are part of controller.\n\nI have another way to do it.\n\n1. PIC chip reads position of POT etc from A/D and SENDS position to LINUX\nbox on RS232 2. PERL asks PREDICT where the sat should be 3. PERL works out\nwhat to do 4. Turn on relays using an inexpensive relay board on the\nparrallel port.\n\nWhat about the old games port ?\n\nThat used to read pots ?\n\n----------------------------------------------------------------------------\nAndrew Rich VK4TEC\n\n_______________________________________________\nSent via [email protected]. Opinions expressed are those of the author.\nNot an AMSAT-NA member? Join now to support the amateur satellite program!\nSubscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n\n",
    "attachments": []
}