Email Detail

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/PNVI3J243Y7MIZZR23AXBGLCJSH7NFLL/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "065C90AA53CC434EA43C6A85541B1CC9@Laptop1520",
    "message_id_hash": "PNVI3J243Y7MIZZR23AXBGLCJSH7NFLL",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/MH5TBPK46SEOSBNTP2LYWFBPAMKQON6E/?format=api",
    "sender": {
        "address": "vk4tec (a) tech-software.net",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Andrew Rich",
    "subject": "[amsat-bb] Re: PIC rotator control",
    "date": "2009-10-13T11:50:14Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/SKNUNOARTBMEQRE7XO5NMSHTLCSYRXR4/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VVUKWQYWHVPAD6ABC3OXEB6DB2PQ4GRY/?format=api",
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/YWL5ZOQ7MOPIN5HVSODYUJCTAQIVKVUU/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Kewl\n\nDo you convert\n\n\"067\" from ascii to binary and then compare that to an A/D value ?\n\nI have worked out how to do binary to ascii\n\nSometime I wonder if just programming in perl on the LINUX side might be \njust as easy\n\nI think potentiometers are used on most rotators ?\n\nUnless stepper motors have entered the scene ?\n\nAndrew\n\n\n----- Original Message ----- \nFrom: \"Marc Vermeersch\" <[email protected]>\nTo: \"'Andrew Rich'\" <[email protected]>; <[email protected]>\nSent: Tuesday, October 13, 2009 9:44 PM\nSubject: RE: [amsat-bb] PIC rotator control\n\n\n> Hi Andrew,\n>\n> I have a PIC based solution currently in the prototype stage. It uses a\n> PIC18F4455 and drives a Yeasu AZ/EL rotor without the Yeasy control box.\n>\n> The PC sends information to the PIC (RequestedAZ,RequestedEL) and the PIC\n> sends back status information to the PC\n> (RequestedAZ,RequestedEL,CurrentAZ,CurrentEL,Status).\n>\n> Everything is done by the PIC:\n> - Control of the rotor motors based on either move-every-n-seconds or\n> move-when-error-angle-is-greater-than-n\n> - Measurement of the actual AZ/EL with 10-bit resolution\n> - Parking when no signal has been coming from the PC in x seconds -or- an\n> explicit park command is received\n> - Stall protection\n> - Some horizon protection: EL cannot go below x when AZ is y to avoid\n> pointing into my neighbors' bedroom.\n> - Over the top rotor control (under development)\n> - ...\n>\n> I'm using a PIC18F4455 and it is very well capable of doing all that and\n> more. I have chosen this path for several reasons:\n> - Eventually I want to run a tracking algorithm in the PIC too\n> - To make the control loop shorter\n> - To avoid dependence on the PC part specifically on safety related \n> aspects\n> like stall control and horizon protection.\n> - To explore the capabilities of the PIC18\n> - (Because it's my job to do embedded HW/SW)\n>\n> BR,\n> --\n> /\\/\\arc\n>\n>> -----Original Message-----\n>> From: [email protected] [mailto:[email protected]] On\n>> Behalf Of Andrew Rich\n>> Sent: dinsdag 13 oktober 2009 12:22\n>> To: [email protected]\n>> Subject: [amsat-bb] PIC rotator control\n>>\n>> Hello\n>>\n>> I am re-visting a rotator controller.\n>>\n>> I am curious, should I push the processing of the \"compare and make a\n>> decision\" onto the PIC, or pull that function back into the PC ?\n>>\n>> PC is LINUX\n>>\n>> I/O is serial\n>>\n>> PIC is 16F877\n>>\n>> Andrew VK4TEC\n>>\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--------------------------------------------------------------------------------\n\n\n\nNo virus found in this incoming message.\nChecked by AVG - www.avg.com\nVersion: 8.5.421 / Virus Database: 270.14.12/2431 - Release Date: 10/12/09 \n13:01:00\n\n",
    "attachments": []
}