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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/DLSGVQ75HBHGQYXHAGUSZLNSGA7LX43W/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "DLSGVQ75HBHGQYXHAGUSZLNSGA7LX43W",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/VLMW6JXCPU64CMFAJBE3WTNZTBMRUSIL/",
    "sender": {
        "address": "David.Bern (a) Engineer.com",
        "mailman_id": "72d9e7f6c3fe4430b68ad823493011c0",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/72d9e7f6c3fe4430b68ad823493011c0/emails/"
    },
    "sender_name": "David Bern",
    "subject": "[amsat-dc] Re: wanted: to borrow or buy a Yaesu G-5500 AZ-EL controller and rotor",
    "date": "2013-06-02T10:51:56Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/KFABJ7T7PQ5ZZP2IVHT24BICZ5GJMGDM/",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/XFZGTEQJEND36Q7JAWK333XAKGFQ2NFL/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Correction: I told them that hardware comes and goes but software is \nforever.\n\n\nOn 06/02/2013 06:03 AM, David Bern wrote:\n> Louie:\n>\n> All good ideas.  The Raspberry Pi or BeagleBone Black little Linux \n> computers gives us the possibility of running a tracking program such \n> as predict\n>\n>     http://www.qsl.net/kd2bd/predict.html\n>\n>\n> or gpredict\n>\n>     http://gpredict.oz9aec.net/\n>\n>\n> in addition to a protocol converter.  I especially like the idea of \n> controlling a telescope drive.  This project could be useful to \n> astronomy buffs.\n>\n> I am teaching my students a software engineering principle that it is \n> valuable to be as generic as possible; that is, to be platform \n> agnostic and protocol agnostic.  It is a more work in the short-term \n> but the benefits are huge in the long-run.  I told them that hard \n> comes and goes buy software is forever.  On Thursday, I told them, for \n> example, that the initial version of a protocol converter would take a \n> protocol in and then produce the same protocol out: to really \n> understand a protocol, you need to be able to read and write the \n> protocol.  We dubbed this a \"null\" protocol converter and it should do \n> nothing correctly, i. e. bits in and the same bits out.  The plan is \n> to implement a \"null\" protocol converter for the DiSEqC and the \n> EasyComm protocols that we are learning.  Once we have these two null \n> protocol converters working then we have the pieces to easily \n> configure a DiSEqC to EasyComm protocol converter.\n>\n> David, WL2NX\n>\n>\n> On 06/01/2013 10:04 AM, Louis Mamakos wrote:\n>> Perhaps this might be of help:http://gatorradio.org/Manuals/Yaesu_GS-232B_Manual.pdf\n>>\n>> It might be cool to build the controller around an inexpensive Raspberry-Pi or BeagleBone Linux controller that has an ethernet interface available.  You could export a simple REST-based HTTP API, as well as emulating the Yaesu serial protocol over a TCP connection.  A simple HTTP API might make testing easier, perhaps.  You could easily return status and debugging information if you used an extensible encoding format like JSON.\n>>\n>> For bonus points, you could also implement the Meade or Celestron serial protocol to be able to drive the rotor like it was a telescope mount from various astronomy-oriented programs that might be useful for locating the moon, Jupiter or tracking satellites.  It would be a shame to build something new a modern and saddle it with only an ancient serial protocol that might not be the best choice for today.\n>>\n>> Just a thought.\n>>\n>> louie\n>> wa3ymh\n>>\n>> On May 31, 2013, at 10:50 AM, David Bern<[email protected]>  wrote:\n>>\n>>> Friends:\n>>>\n>>> I am working on a summer project with students at Montgomery College, Rockville.  The project is to design and build a device that controls a pair of inexpensive satellite TV rotors.  And the device would emulate a popular AZ-EL rotor such as a Yaesu G-5500 AZ-EL controller so it can be used by a satellite tracking program such as SatPC32.  Tom, K3IO suggested this project at the last AMSAT-DC workshop and is guiding us with this project.\n>>>\n>>> I would like to borrow a Yaesu G-5500 AZ-EL controller and rotor for about three months or buy a used one so we can study and understand its command protocol.\n>>>\n>>> I will pick up or pay for shipping.  Please contact David, W2LNX directly at\n>>>\n>>>    [email protected]\n>>>\n>>>\n>>> Thank you,\n>>> David, W2LNX\n>>> _______________________________________________\n>>> Via the AMSAT-DC mailing list courtesy of AMSAT-NA\n>>> [email protected]\n>>> http://amsat.org/mailman/listinfo/amsat-dc\n>\n\n",
    "attachments": []
}