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latched hall sensors

ArchiverArchiver Posts: 46,084
edited 2004-01-02 18:27 in General Discussion
Hello,
In my recent order to www.jameco(part# 174043), I bought a few
latched hall sensors to play with. There is not much on the jameco
site for the product and the datasheet is poor. Can anyone give me
suggestions? They were not expensive but I like to experiment with
new parts.

Thanks,
Curtis

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2004-01-02 02:54
    Curtis,
    I assume you want to interface the part to your stamp......

    Connect pin #1 to +5 volts.

    Connet pin #2 to ground.

    Connect pin #3 to +5 volts THROUGH 10k ohms.

    Connect your monitor pin (Stamp input pin) directly to pin #3.

    When a south magnetic pole is detected the output (pin 3) will go low and
    stay low until a north magnetic pole is detected, at which time the output
    should
    go high and stay in this state until again a south pole is detected.

    This sensor does not bode well for rpm pick up if you have only one magnet,
    because once it senses a pole (north or south) it will stay in that mode until
    the opposite pole is detected.

    Hope this helps.

    Ken


    In a message dated 1/1/2004 5:10:29 PM Pacific Standard Time,
    cenlasoft@y... writes:
    Hello,
    In my recent order to www.jameco(part# 174043), I bought a few
    latched hall sensors to play with. There is not much on the jameco
    site for the product and the datasheet is poor. Can anyone give me
    suggestions? They were not expensive but I like to experiment with
    new parts.

    Thanks,
    Curtis


    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2004-01-02 02:58
    I'd probably check out the hall effect sensors at
    www.allegromicro.com
    The data sheets are likely there as well. Plus they have a lot of other
    info as well.

    Basically, when a small magnetic field (magnet) gets close, the sensor
    will output a high or low, depending on the type of sensor. Also whether
    the sensor is sensitive to the North pole or South pole of the magnet is
    important. Some sensors are extremely sensitive and others less so
    (bigger or smaller magnet, or a magnet can be farther or closer).
    A latched hall effect sensor, usually means that once a magnet is picked
    up, it latches and stays set until you turn it off or something.
    A typical use would be security, if a door or window is opened, the
    magnet on the door or window slides by triggering the sensor.

    Original Message
    From: cenlasoft [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=jFSY1n7HlDrj40HEke5IIGz9jCtsiNs3q0Qx5gGooislCmzmzfKMg1kWbuBtdQ3WfB9tdrlTk8f-UfrU8JA]cenlasoft@y...[/url
    Sent: Thursday, January 01, 2004 7:09 PM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] latched hall sensors

    Hello,
    In my recent order to www.jameco(part# 174043), I bought a few
    latched hall sensors to play with. There is not much on the jameco
    site for the product and the datasheet is poor. Can anyone give me
    suggestions? They were not expensive but I like to experiment with
    new parts.

    Thanks,
    Curtis




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  • ArchiverArchiver Posts: 46,084
    edited 2004-01-02 17:13
    --- smartdim@a... wrote:
    > Curtis,
    > I assume you want to interface the part to your
    > stamp......
    >
    > Connect pin #1 to +5 volts.
    >
    > Connet pin #2 to ground.
    >
    > Connect pin #3 to +5 volts THROUGH 10k ohms.
    >
    > Connect your monitor pin (Stamp input pin) directly
    > to pin #3.
    >
    > When a south magnetic pole is detected the output
    > (pin 3) will go low and
    > stay low until a north magnetic pole is detected, at
    > which time the output should
    > go high and stay in this state until again a south
    > pole is detected.
    >
    > This sensor does not bode well for rpm pick up if
    > you have only one magnet,
    > because once it senses a pole (north or south) it
    > will stay in that mode until
    > the opposite pole is detected.
    >
    > Hope this helps.
    >
    > Ken
    >
    >
    > thanks.
    Ken, can you make a correction or suggestion on my my
    tokenizer BS2.

    me.
    ronny
    >
    > In a message dated 1/1/2004 5:10:29 PM Pacific
    > Standard Time,
    > cenlasoft@y... writes:
    > Hello,
    > In my recent order to www.jameco(part# 174043), I
    > bought a few
    > latched hall sensors to play with. There is not much
    > on the jameco
    > site for the product and the datasheet is poor. Can
    > anyone give me
    > suggestions? They were not expensive but I like to
    > experiment with
    > new parts.
    >
    > Thanks,
    > Curtis
    >
    >
    > [noparse][[/noparse]Non-text portions of this message have been
    > removed]
    >
    >
    > To UNSUBSCRIBE, just send mail to:
    > basicstamps-unsubscribe@yahoogroups.com
    > from the same email address that you subscribed.
    > Text in the Subject and Body of the message will be
    > ignored.
    >
    >
    > Yahoo! Groups Links
    >
    > To visit your group on the web, go to:
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    >
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    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2004-01-02 17:56
    Thanks,
    I will look at the tokenizer code. I am almost
    finished with an ide(Obj file loader) for the pocketpc
    and a data aquisition software also for ppc. I will
    post it soon.
    Thanks,
    Curtis

    --- ronny taka <ronnytaka@y...> wrote:
    > --- smartdim@a... wrote:
    > > Curtis,
    > > I assume you want to interface the part to your
    > > stamp......
    > >
    > > Connect pin #1 to +5 volts.
    > >
    > > Connet pin #2 to ground.
    > >
    > > Connect pin #3 to +5 volts THROUGH 10k ohms.
    > >
    > > Connect your monitor pin (Stamp input pin)
    > directly
    > > to pin #3.
    > >
    > > When a south magnetic pole is detected the output
    > > (pin 3) will go low and
    > > stay low until a north magnetic pole is detected,
    > at
    > > which time the output should
    > > go high and stay in this state until again a south
    > > pole is detected.
    > >
    > > This sensor does not bode well for rpm pick up if
    > > you have only one magnet,
    > > because once it senses a pole (north or south) it
    > > will stay in that mode until
    > > the opposite pole is detected.
    > >
    > > Hope this helps.
    > >
    > > Ken
    > >
    > >
    > > thanks.
    > Ken, can you make a correction or suggestion on my
    > my
    > tokenizer BS2.
    >
    > me.
    > ronny
    > >
    > > In a message dated 1/1/2004 5:10:29 PM Pacific
    > > Standard Time,
    > > cenlasoft@y... writes:
    > > Hello,
    > > In my recent order to www.jameco(part# 174043), I
    > > bought a few
    > > latched hall sensors to play with. There is not
    > much
    > > on the jameco
    > > site for the product and the datasheet is poor.
    > Can
    > > anyone give me
    > > suggestions? They were not expensive but I like to
    > > experiment with
    > > new parts.
    > >
    > > Thanks,
    > > Curtis
    > >
    > >
    > > [noparse][[/noparse]Non-text portions of this message have been
    > > removed]
    > >
    > >
    > > To UNSUBSCRIBE, just send mail to:
    > > basicstamps-unsubscribe@yahoogroups.com
    > > from the same email address that you subscribed.
    > > Text in the Subject and Body of the message will
    > be
    > > ignored.
    > >
    > >
    > > Yahoo! Groups Links
    > >
    > > To visit your group on the web, go to:
    > > http://groups.yahoo.com/group/basicstamps/
    > >
    > > To unsubscribe from this group, send an email to:
    > > basicstamps-unsubscribe@yahoogroups.com
    > >
    > > Your use of Yahoo! Groups is subject to:
    > > http://docs.yahoo.com/info/terms/
    > >
    > >
    >
    >
    > __________________________________
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    > Find out what made the Top Yahoo! Searches of 2003
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    > [noparse][[/noparse]Non-text portions of this message have been
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    >
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  • ArchiverArchiver Posts: 46,084
    edited 2004-01-02 18:27
    In a message dated 1/2/2004 9:16:20 AM Pacific Standard Time,
    ronnytaka@y... writes:
    Ken, can you make a correction or suggestion on my my
    tokenizer BS2.

    me.
    ronny
    Ronny,

    I don't understand the question, can you be more specific?


    [noparse][[/noparse]Non-text portions of this message have been removed]
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