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Variable speeds — Parallax Forums

Variable speeds

ArchiverArchiver Posts: 46,084
edited 2004-06-10 15:17 in General Discussion
I'm using a basic stamp 1 to control a servo to move an arm up and
down that was easy but with the bells and whistles that was needed on
it left me with only 2 or 3 I/O pins left and they want a variable
speed for this up and down motion. I have over heard that there is a
pot command that you place a known cap with the pot and if figures
the pots location from the time constant of the RC circuit. Does any
one know about this function?

Thanks,

Matt

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2004-06-10 09:39
    If you have the latest software for your stamp, go to the HELP file and look
    up RCTIME

    That should explain everything you need to know about the function to get you
    going.

    ===========
    I'm using a basic stamp 1 to control a servo to move an arm up and
    down that was easy but with the bells and whistles that was needed on
    it left me with only 2 or 3 I/O pins left and they want a variable
    speed for this up and down motion. I have over heard that there is a
    pot command that you place a known cap with the pot and if figures
    the pots location from the time constant of the RC circuit. Does any
    one know about this function?

    Thanks,

    Matt


    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2004-06-10 14:50
    The Help file (look under POT) will tell you all the details.

    -- Jon Williams
    -- Applications Engineer, Parallax
    -- Dallas Office

    Original Message
    From: matt02wbuq [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=ZFSvJiy3H_qUfeJPyb5BgFVbg1ZUmK6R1t8zNiHHtqwHP6FjCZvAPGD3T5vC5oHt_IEDBfaZzLac67Ma]matt02wbuq@y...[/url
    Sent: Wednesday, June 09, 2004 12:15 PM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] Variable speeds


    I'm using a basic stamp 1 to control a servo to move an arm up and
    down that was easy but with the bells and whistles that was needed on
    it left me with only 2 or 3 I/O pins left and they want a variable
    speed for this up and down motion. I have over heard that there is a
    pot command that you place a known cap with the pot and if figures
    the pots location from the time constant of the RC circuit. Does any
    one know about this function?

    Thanks,

    Matt
  • ArchiverArchiver Posts: 46,084
    edited 2004-06-10 15:17
    The BASIC Stamp 1 module uses a command called POT. Please note that
    POT (BS1) and RCTIME (BS2) behave differently and are not
    circuit-compatible.

    -- Jon Williams
    -- Applications Engineer, Parallax
    -- Dallas Office

    Original Message
    From: smartdim@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=_ZANcMRcju29Zq86DfBnuvkqiYR-6neP3yi-ZXqNC3pWfJKnl2n5gc4X1gdUMI8w06SBE40MCNKTew]smartdim@a...[/url
    Sent: Thursday, June 10, 2004 7:39 AM
    To: basicstamps@yahoogroups.com
    Subject: Re: [noparse][[/noparse]basicstamps] Variable speeds


    If you have the latest software for your stamp, go to the HELP file and
    look
    up RCTIME

    That should explain everything you need to know about the function to
    get you
    going.

    ===========
    I'm using a basic stamp 1 to control a servo to move an arm up and
    down that was easy but with the bells and whistles that was needed on
    it left me with only 2 or 3 I/O pins left and they want a variable
    speed for this up and down motion. I have over heard that there is a
    pot command that you place a known cap with the pot and if figures
    the pots location from the time constant of the RC circuit. Does any
    one know about this function?

    Thanks,

    Matt
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