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Discussion Groups | BasicX | Re: inclinometers using basicX24

Discussion forum for the BasicX family of microcontroller chips.

inclinometers using basicX24 - naimead - Mar 6 8:54:00 2005


I am looking for a inclinometer so I can interface it to a basicX-24.
Has anyone used an inclinometer with a basicX before and if yes what
model?The only example i could find is the interface with the model
ADXL202EB(2 axis) accelerometer but i need to count angles in x-y-z
space.





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RE: inclinometers using basicX24 - Tom Becker - Mar 6 11:46:00 2005

> ... I need to count angles in x-y-z space...

I got two Kionix KXM52-L20s on eval boards six months ago but haven't
yet used them. I see that the analog product is now labelled KXM52-1050
and the digital SPI version of it is the KXP74-1010. Both are
three-axis accellerometers. The company was glad to sample the parts.

I'm only now approaching adding these accellerometers to a project, so
I'll have some feedback soon. Tom
Tom Becker
--... ...--
www.RighTime.com
The RighTime Clock Company, Inc., Cape Coral, Florida USA
+1239 540 5700




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Re: inclinometers using basicX24 - naimead - Mar 6 12:44:00 2005


thanks,that's exactly what i want!Just a question:why you chose the
EVAL-1050 and not the demo board or the development board?won't it
be more difficult to connect it on a basicX?




Re: inclinometers using basicX24


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RE: Re: inclinometers using basicX24 - Tom Becker - Mar 6 13:03:00 2005

> Why...

I got what was available at the time. The development board is new
since the last time I visited them, I believe. Tom
Tom Becker
--... ...--
www.RighTime.com
The RighTime Clock Company, Inc., Cape Coral, Florida USA
+1239 540 5700




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Re: inclinometers using basicX24 - naimead - Mar 12 22:37:00 2005


Tom,

I have communicated with kionix and they told me that their product
is not suitable for a very dynamic platform(e.g a platform that
moves in a speed>30km/h) because it updates its data really
slow.Have you got any experimental info on these or maybe a more
suitable inclinometer in mind?




Re: inclinometers using basicX24


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RE: Re: inclinometers using basicX24 - Tom Becker - Mar 12 22:43:00 2005

> ... they told me that their product is not suitable for a very
dynamic platform (e.g a platform that moves in a speed>30km/h) because
it updates its data really slow. Have you got any experimental info on
these or maybe a more suitable inclinometer in mind?

No, I haven't had time to start to work with the Kionix modules yet.
Francisco, can you help? Tom
Tom Becker
--... ...--
www.RighTime.com
The RighTime Clock Company, Inc., Cape Coral, Florida USA
+1239 540 5700




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Re: inclinometers using basicX24 - naimead - Mar 14 20:58:00 2005


Finally i have found a sensor that looks suitable for the job...This
is memsic's mxa2500e,but i have two questions:

i)does the sensor have to be analog or digital?

ii)is there a tan**(-1) function in basicX?





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Re: inclinometers using basicX24 - Don Kinzer - Mar 14 23:46:00 2005


--- In , "naimead" <naimead@y...> wrote:
> ii)is there a tan**(-1) function in basicX?

The atn() function may serve your purpose.

BTW, there are categorized lists of functions in the front of the
System Library manual. One of the categories is "Math Functions".

Don




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Re: inclinometers using basicX24 - tombhandley - Mar 15 6:41:00 2005


naimead, I've played with AD's ADXL202 two-axis and freescale
(formally Motorola)'s three-axis accelerometers and I'm about to test
Parallax's Memsic 2125 version. I should have a BX-24 example on my
web site by this weekend. I'm not familiar with the MXA2500E.

These devices typically provide a pulse or analog output. I'm not
sure why you need the tan?() function?

- Tom

--- In , "naimead" <naimead@y...> wrote:
>
> Finally i have found a sensor that looks suitable for the
job...This
> is memsic's mxa2500e,but i have two questions:
>
> i)does the sensor have to be analog or digital?
>
> ii)is there a tan**(-1) function in basicX?




Re: inclinometers using basicX24


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Re: Re: inclinometers using basicX24 - Paul Dubinsky - Mar 15 8:20:00 2005

The Memsic Application note, Inclination Sensing with Thermal
Accelerometers (http://memsic.com/memsic/pdfs/an-00mx-007.pdf), gives a
formula for deriving the inclination from a vertical position that uses the
arc tangent function. The device is a 2 axis horizontal accelerometer. I
use these accelerometers in one of my products as accelerometers and find
them inexpensive and reliable. I'm just starting to develop a product using
them as inclinometers. Early results are promising.

Paul At 05:41 AM 3/15/2005, you wrote:
>naimead, I've played with AD's ADXL202 two-axis and freescale
>(formally Motorola)'s three-axis accelerometers and I'm about to test
>Parallax's Memsic 2125 version. I should have a BX-24 example on my
>web site by this weekend. I'm not familiar with the MXA2500E.
>
>These devices typically provide a pulse or analog output. I'm not
>sure why you need the tan?() function?
>
>- Tom
>
>--- In , "naimead" <naimead@y...> wrote:
> >
> > Finally i have found a sensor that looks suitable for the
>job...This
> > is memsic's mxa2500e,but i have two questions:
> >
> > i)does the sensor have to be analog or digital?
> >
> > ii)is there a tan**(-1) function in basicX? >
>Yahoo! Groups Links ===========================================================
"We have the power to do any damn fool thing we want to do,
and we seem to do it about every ten minutes."
J. William Fulbright , quoted in Time (New York, Feb. 4, 1952).
===========================================================

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




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Re: inclinometers using basicX24 - naimead - Mar 15 13:07:00 2005


Thanks very much for your replies!
Tom I am going to visit your site every day.

--- In , Paul Dubinsky <pdubinsky@f...> wrote:
> The Memsic Application note, Inclination Sensing with Thermal
> Accelerometers (http://memsic.com/memsic/pdfs/an-00mx-007.pdf),
gives a
> formula for deriving the inclination from a vertical position that
uses the
> arc tangent function. The device is a 2 axis horizontal
accelerometer. I
> use these accelerometers in one of my products as accelerometers
and find
> them inexpensive and reliable. I'm just starting to develop a
product using
> them as inclinometers. Early results are promising.
>
> Paul > At 05:41 AM 3/15/2005, you wrote: >
> >naimead, I've played with AD's ADXL202 two-axis and freescale
> >(formally Motorola)'s three-axis accelerometers and I'm about to
test
> >Parallax's Memsic 2125 version. I should have a BX-24 example on
my
> >web site by this weekend. I'm not familiar with the MXA2500E.
> >
> >These devices typically provide a pulse or analog output. I'm not
> >sure why you need the tan?() function?
> >
> >- Tom
> >
> >--- In , "naimead" <naimead@y...> wrote:
> > >
> > > Finally i have found a sensor that looks suitable for the
> >job...This
> > > is memsic's mxa2500e,but i have two questions:
> > >
> > > i)does the sensor have to be analog or digital?
> > >
> > > ii)is there a tan**(-1) function in basicX?
> >
> >
> >
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
>
> ===========================================================
> "We have the power to do any damn fool thing we want to do,
> and we seem to do it about every ten minutes."
> J. William Fulbright , quoted in Time (New York, Feb. 4,
1952).
> ===========================================================
>
> [Non-text portions of this message have been removed]





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Re: inclinometers using basicX24 - tombhandley - Mar 16 10:28:00 2005


Paul, thanks for the pointer. I have a robotics application and it's
good to hear about your results with the Memsic sensor.

- Tom

--- In , Paul Dubinsky <pdubinsky@f...> wrote:
> The Memsic Application note, Inclination Sensing with Thermal
> Accelerometers (http://memsic.com/memsic/pdfs/an-00mx-007.pdf),
gives a
> formula for deriving the inclination from a vertical position that
uses the
> arc tangent function. The device is a 2 axis horizontal
accelerometer. I
> use these accelerometers in one of my products as accelerometers
and find
> them inexpensive and reliable. I'm just starting to develop a
product using
> them as inclinometers. Early results are promising.
>
> Paul




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