Frequency as control input?

Archiver

I need to control a motor with a frequency input, and I was wondering
if anyone might be able to help me out. I have a sensor that
optimally reads 10kHz, and I need to turn a motor in one direction if
the freq is above 10k, and the other direction if it is under 10k.
Is the BASIC STAMP a feasable solution to this problem? If so, how
might it be implemented?

Any help would be much appreciated.

-Aaron

Archiver

i dont think that PULSIN will work as the BS2P maximum
pulse width = 49.125 ms, F = 1/T = 20.35 Hz. so how
about a hardware solution, how about a freq to voltage
converter? digikey has several.
http://www.national.com/ds/LM/LM231.pdf
ross

--- "ipschnug <ipschnug@y...>"
<ipschnug@y...> wrote:
> I need to control a motor with a frequency input,
> and I was wondering
> if anyone might be able to help me out. I have a
> sensor that
> optimally reads 10kHz, and I need to turn a motor in
> one direction if
> the freq is above 10k, and the other direction if it
> is under 10k.
> Is the BASIC STAMP a feasable solution to this
> problem? If so, how
> might it be implemented?
>
> Any help would be much appreciated.
>
> -Aaron
>
>
> To UNSUBSCRIBE, just send mail to:
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>
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>


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Archiver

From what you said the sensor reads 10khz so what does the
sensor put out ??

---

Original Message

---

From: "Klutch" <klutch66@y...>
To: <basicstamps@yahoogroups.com>
Sent: January 23, 2003 11:24 AM
Subject: Re: [noparse][[/noparse]basicstamps] Frequency as control input?


: i dont think that PULSIN will work as the BS2P maximum
: pulse width = 49.125 ms, F = 1/T = 20.35 Hz. so how
: about a hardware solution, how about a freq to voltage
: converter? digikey has several.
: http://www.national.com/ds/LM/LM231.pdf
: ross
:
: --- "ipschnug <ipschnug@y...>"
: <ipschnug@y...> wrote:
: > I need to control a motor with a frequency input,
: > and I was wondering
: > if anyone might be able to help me out. I have a
: > sensor that
: > optimally reads 10kHz, and I need to turn a motor in
: > one direction if
: > the freq is above 10k, and the other direction if it
: > is under 10k.
: > Is the BASIC STAMP a feasable solution to this
: > problem? If so, how
: > might it be implemented?
: >
: > Any help would be much appreciated.
: >
: > -Aaron
: >
: >
: > 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/
: >
: >
:
:
: __________________________________________________
: Do you Yahoo!?
: Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
: http://mailplus.yahoo.com
:
: 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/
:
:

Archiver

>I need to control a motor with a frequency input, and I was wondering
>if anyone might be able to help me out. I have a sensor that
>optimally reads 10kHz, and I need to turn a motor in one direction if
>the freq is above 10k, and the other direction if it is under 10k.
>Is the BASIC STAMP a feasable solution to this problem? If so, how
>might it be implemented?
>
>Any help would be much appreciated.
>
>-Aaron


' {$PBASIC 2.5}
x var word
do
count 0,100.x
debug "frequency= ",x*10
if X>=1000 then
' do clockwise
else
' do counterclockwise
endif
loop

The count command above counts the input transitions on pin P0 for
100 milliseconds.

-- Tracy