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Sensor Help — Parallax Forums

Sensor Help

ArchiverArchiver Posts: 46,084
edited 2003-06-06 04:15 in General Discussion
Hello Ricky

> Is it ok to attach this word file to an email?

Email attachments are not permitted in this list, but you can upload
files to the Files folder:
http://groups.yahoo.com/group/basicstamps/files/


Saludos,
Aristides Alvarez
International Education Program Developer
aalvarez@p...
Parallax, Inc. www.parallax.com
Rocklin, California
USA

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2003-06-06 00:36
    I have a sensor I need some help with. I am trying to interface this sensor to
    a 2p. I am confused on the timing and the commands for the sensor. I have the
    data sheet but it is only in word format. Is it ok to attach this word file to
    an email?

    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2003-06-06 02:10
    Hi Ricky,

    It looks like the communication to this sensor is simply 2400 baud RS232.

    For example, to read turbidity, you have to send it the activation
    sequence, and then receive the result...

    PAUSE 5 ' quiet before transmission
    SEROUT 0,396,[noparse][[/noparse]$50,$03,$AD] ' command
    SERIN
    0,396,[noparse][[/noparse]wait($C0,$03),trans.byte0,trans.byte1,scat.byte0,scat.byte1,che
    ck.byte0,check.byte1]


    It may happen that the delay between the characters will be too fast
    for the stamp to receive them with the above form of SERIN. The
    following would be faster:
    SERIN 0,396,[noparse][[/noparse]STR x\8] ' get 8 bytes fast
    ' then parse the bytes into the variables
    ' or just define the variables in the right order to begin with.

    -- Tracy


    >I have a sensor I need some help with. I am trying to interface
    >this sensor to a 2p. I am confused on the timing and the commands
    >for the sensor. I have the data sheet but it is only in word
    >format. Is it ok to attach this word file to an email?
    >

    >http://groups.yahoo.com/group/basicstamps/files/Sensor.doc
  • ArchiverArchiver Posts: 46,084
    edited 2003-06-06 03:37
    Thanks Tracy. I'll give it a try.
    Original Message
    From: "Tracy Allen" <tracy@e...>
    To: <basicstamps@yahoogroups.com>
    Sent: Thursday, June 05, 2003 7:10 PM
    Subject: Re: [noparse][[/noparse]basicstamps] Sensor Help


    > Hi Ricky,
    >
    > It looks like the communication to this sensor is simply 2400 baud RS232.
    >
    > For example, to read turbidity, you have to send it the activation
    > sequence, and then receive the result...
    >
    > PAUSE 5 ' quiet before transmission
    > SEROUT 0,396,[noparse][[/noparse]$50,$03,$AD] ' command
    > SERIN
    > 0,396,[noparse][[/noparse]wait($C0,$03),trans.byte0,trans.byte1,scat.byte0,scat.byte1,che
    > ck.byte0,check.byte1]
    >
    >
    > It may happen that the delay between the characters will be too fast
    > for the stamp to receive them with the above form of SERIN. The
    > following would be faster:
    > SERIN 0,396,[noparse][[/noparse]STR x\8] ' get 8 bytes fast
    > ' then parse the bytes into the variables
    > ' or just define the variables in the right order to begin with.
    >
    > -- Tracy
    >
    >
    > >I have a sensor I need some help with. I am trying to interface
    > >this sensor to a 2p. I am confused on the timing and the commands
    > >for the sensor. I have the data sheet but it is only in word
    > >format. Is it ok to attach this word file to an email?
    > >
    >
    > >http://groups.yahoo.com/group/basicstamps/files/Sensor.doc
    >
    > 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.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2003-06-06 04:15
    Ok a couple of questions on the following code:
    Should the baudmode be 1021 for the stamp2p instead of 396?
    What is the wait command in the first serin command?
    In the second serin command, what is str?
    Is x the input data?


    > Hi Ricky,
    > It looks like the communication to this sensor is simply 2400 baud RS232.
    > For example, to read turbidity, you have to send it the activation
    > sequence, and then receive the result...
    > PAUSE 5 ' quiet before transmission
    > SEROUT 0,396,[noparse][[/noparse]$50,$03,$AD] ' command
    > SERIN
    0,396,[noparse][[/noparse]wait($C0,$03),trans.byte0,trans.byte1,scat.byte0,scat.byte1,check.byt
    e0,check.byte1]
    >
    >
    > It may happen that the delay between the characters will be too fast
    > for the stamp to receive them with the above form of SERIN. The
    > following would be faster:
    > SERIN 0,396,[noparse][[/noparse]STR x\8] ' get 8 bytes fast
    > ' then parse the bytes into the variables
    > ' or just define the variables in the right order to begin with.
    >
    > -- Tracy
    >
    >
    > >I have a sensor I need some help with. I am trying to interface
    > >this sensor to a 2p. I am confused on the timing and the commands
    > >for the sensor. I have the data sheet but it is only in word
    > >format. Is it ok to attach this word file to an email?
    > >
    >
    > >http://groups.yahoo.com/group/basicstamps/files/Sensor.doc
    >
    > 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.
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >
    >
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