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using a cmos 4066 with basic stamp — Parallax Forums

using a cmos 4066 with basic stamp

ArchiverArchiver Posts: 46,084
edited 2003-08-20 16:56 in General Discussion
Hey All,

I have been able to hook a 4066 control lines to a basic stamp and the
I'm able to turn on/off the 4066's I/Os.

I'm using the voltage and ground from the basic stamp.

My question is should I be using resistors or another component to
improve the reliability?

Thanks,

Ben

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2003-08-20 01:49
    In a message dated 8/19/2003 5:43:14 PM Pacific Daylight Time, ben@c...
    writes:
    I have been able to hook a 4066 control lines to a basic stamp and the
    I'm able to turn on/off the 4066's I/Os.

    I'm using the voltage and ground from the basic stamp.

    My question is should I be using resistors or another component to
    improve the reliability?

    Thanks,

    Ben
    Resistors or other components where? Is the 4066 multiplexing lines
    unrelated to the stamp?

    If you are talking about resistors or other components on the power/ground
    line of the 4066, one recomendation is a 0.1 uf capacitor from vdd to vss of
    your 4066.

    Hope this answers your question.


    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2003-08-20 04:19
    --- In basicstamps@yahoogroups.com, Ben Greenfield <ben@c...> wrote:
    > Hey All,
    >
    > I have been able to hook a 4066 control lines to a basic stamp and
    the
    > I'm able to turn on/off the 4066's I/Os.
    >
    > I'm using the voltage and ground from the basic stamp.
    >
    > My question is should I be using resistors or another component to
    > improve the reliability?
    >
    > Thanks,
    >
    > Ben


    Depending on how you are switching, switch 1 then 2 then 3 then 4
    then read 1 and switch it,
    read 2 and switch it.

    that allows some time for the readings to settle between readings.

    switch and read may not offer stabile or accurate results.

    Dave
  • ArchiverArchiver Posts: 46,084
    edited 2003-08-20 16:08
    On Tuesday, August 19, 2003, at 08:49 PM, smartdim@a... wrote:

    > Ben
    > Resistors or other components where? Is the 4066 multiplexing lines
    > unrelated to the stamp?

    Yes I'm controlling a remote control. Currently I have it configured so
    that I'm completing the circuit with the 4066 with the controls
    attached to the basic stamp. The remote is currently powered by
    batteries.

    > If you are talking about resistors or other components on the
    > power/ground
    > line of the 4066

    Yes I'm using 10k ohm resistors between the basic stamp's Vdd and the
    basic stamp's I/O to debounce some buttons I have wired to the basic
    stamp. I wanted to know if I should be using the same type of
    configuration to improve the reliability of the 4066 connections.

    > , one recomendation is a 0.1 uf capacitor from vdd to vss of
    > your 4066.

    Does this mean that I place the capacitor between both the vdd and vss
    connection in other words use 2 caps per 4066?

    Should the vss and vdd share a cap in between either the stamps vdd
    distribution and the 4066?

    or

    Should the capacitor go between the vss distribution of the stamp and
    4066?

    Finally what is the function the capacitor would be performing?

    Thanks so much for all the great advice that everyone on the list is so
    kind to provide.

    > Hope this answers your question.

    Answers 1 question and creates more [noparse]:)[/noparse]

    Thanks,

    Ben
  • ArchiverArchiver Posts: 46,084
    edited 2003-08-20 16:56
    In a message dated 8/20/2003 8:17:08 AM Pacific Daylight Time, ben@c...
    writes:

    On Tuesday, August 19, 2003, at 08:49 PM, smartdim@a... wrote:

    > Ben
    > Resistors or other components where? Is the 4066 multiplexing lines
    > unrelated to the stamp?

    Yes I'm controlling a remote control. Currently I have it configured so
    that I'm completing the circuit with the 4066 with the controls
    attached to the basic stamp. The remote is currently powered by
    batteries.

    > If you are talking about resistors or other components on the
    > power/ground
    > line of the 4066

    Yes I'm using 10k ohm resistors between the basic stamp's Vdd and the
    basic stamp's I/O to debounce some buttons I have wired to the basic
    stamp. I wanted to know if I should be using the same type of
    configuration to improve the reliability of the 4066 connections.

    > , one recomendation is a 0.1 uf capacitor from vdd to vss of
    > your 4066.

    Does this mean that I place the capacitor between both the vdd and vss
    connection in other words use 2 caps per 4066?

    Should the vss and vdd share a cap in between either the stamps vdd
    distribution and the 4066?

    or

    Should the capacitor go between the vss distribution of the stamp and
    4066?

    Finally what is the function the capacitor would be performing?

    Thanks so much for all the great advice that everyone on the list is so
    kind to provide.

    > Hope this answers your question.

    Answers 1 question and creates more [noparse]:)[/noparse]

    Thanks,

    Ben
    See the link below for the purpose of the caps.

    http://www.seattlerobotics.org/encoder/jun97/basics.html

    The 0.1 uF cap goes from vdd to vss, One cap per 4066.

    The 4066 is basically just a switch, so no resistors are needed from the
    input or output to Vdd.

    Hope this helps.


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