for sale: Vector 2Xe electronic compass

J

Jack Valmadre

Guest
I've recently purchased a Vector 2Xe digital compass sensor for
AU$170, not realising that it operates at 3V rather than 5V. The rest
of my system is 5V, so I can't use it.

The company, Weather Down Under, are not prepared to accept an
exchange as they do not regularly stock this item, so I am hoping to
find a buyer over the internet. The sensor is brand new and has never
been used. It's not damaged in any way.

I'd like to sell it for $100 (inclusive of postage) to help me pay for
the 5V Vector 2X I require. Please e-mail me at
jack[DOT]valmadre[AT]optusnet[DOT]com[DOT]au if you're interested.

The Vector 2Xe uses SPI (Serial Peripheral Interface) to communicate
with a microcontroller. It draws less than 1mA at 3V. It has a
resolution of 0.01°, and an absolute accuracy of 2°. You can read more
about the device at http://pnicorp.com/productDetail?nodeId=c39b.

Thanks,
Jack
 
Have you checked that the SPI lines are 5 volt compatible ? Many SPI
devices using 3 volt supplies are 5 volt tolerant in those lines, in which
case you just need a 3 volt regulator for the power supply.

--
Regards,

Adrian Jansen
J & K MicroSystems
Microcomputer solutions for industrial control
"Jack Valmadre" <jack.valmadre@optusnet.com.au> wrote in message
news:44318874.0401150338.b73d7ba@posting.google.com...
I've recently purchased a Vector 2Xe digital compass sensor for
AU$170, not realising that it operates at 3V rather than 5V. The rest
of my system is 5V, so I can't use it.

The company, Weather Down Under, are not prepared to accept an
exchange as they do not regularly stock this item, so I am hoping to
find a buyer over the internet. The sensor is brand new and has never
been used. It's not damaged in any way.

I'd like to sell it for $100 (inclusive of postage) to help me pay for
the 5V Vector 2X I require. Please e-mail me at
jack[DOT]valmadre[AT]optusnet[DOT]com[DOT]au if you're interested.

The Vector 2Xe uses SPI (Serial Peripheral Interface) to communicate
with a microcontroller. It draws less than 1mA at 3V. It has a
resolution of 0.01°, and an absolute accuracy of 2°. You can read more
about the device at http://pnicorp.com/productDetail?nodeId=c39b.

Thanks,
Jack
Click to expand...
 
And if not, there are 3V to 5V logic translator ICs available, bidirectional
ones too. you could buy quite a few with that $70 loss.

Greg



"Adrian Jansen" <qqv@noqqwhere.com> wrote in message
news:4007222a@duster.adelaide.on.net...
Have you checked that the SPI lines are 5 volt compatible ? Many SPI
devices using 3 volt supplies are 5 volt tolerant in those lines, in which
case you just need a 3 volt regulator for the power supply.

--
Regards,

Adrian Jansen
J & K MicroSystems
Microcomputer solutions for industrial control
"Jack Valmadre" <jack.valmadre@optusnet.com.au> wrote in message
news:44318874.0401150338.b73d7ba@posting.google.com...
I've recently purchased a Vector 2Xe digital compass sensor for
AU$170, not realising that it operates at 3V rather than 5V. The rest
of my system is 5V, so I can't use it.

The company, Weather Down Under, are not prepared to accept an
exchange as they do not regularly stock this item, so I am hoping to
find a buyer over the internet. The sensor is brand new and has never
been used. It's not damaged in any way.

I'd like to sell it for $100 (inclusive of postage) to help me pay for
the 5V Vector 2X I require. Please e-mail me at
jack[DOT]valmadre[AT]optusnet[DOT]com[DOT]au if you're interested.

The Vector 2Xe uses SPI (Serial Peripheral Interface) to communicate
with a microcontroller. It draws less than 1mA at 3V. It has a
resolution of 0.01°, and an absolute accuracy of 2°. You can read more
about the device at http://pnicorp.com/productDetail?nodeId=c39b.

Thanks,
Jack
Click to expand...
 
Hi again,
also, I'd buy from the mob you had a link too. much cheaper given the aus
dollar at the moment.

One thing I did see in the manual was the calibration info is very limited.
I've used honeywell compasses and there is a specific process to go through
to cal the compass. In their instance this involved rotating the compass
slowly 720 degrees and rocking the compass in pitch and roll (this compass
had a 2 axis tilt sensor to correct for pitch and roll).
The compass then determined the correction factors for the ellipsoid pattern
it got.

In the compass you have there is no explanation of the cal process, are
there any other documents with the compass?

Greg


"Jack Valmadre" <jack.valmadre@optusnet.com.au> wrote in message
news:44318874.0401150338.b73d7ba@posting.google.com...
I've recently purchased a Vector 2Xe digital compass sensor for
AU$170, not realising that it operates at 3V rather than 5V. The rest
of my system is 5V, so I can't use it.

The company, Weather Down Under, are not prepared to accept an
exchange as they do not regularly stock this item, so I am hoping to
find a buyer over the internet. The sensor is brand new and has never
been used. It's not damaged in any way.

I'd like to sell it for $100 (inclusive of postage) to help me pay for
the 5V Vector 2X I require. Please e-mail me at
jack[DOT]valmadre[AT]optusnet[DOT]com[DOT]au if you're interested.

The Vector 2Xe uses SPI (Serial Peripheral Interface) to communicate
with a microcontroller. It draws less than 1mA at 3V. It has a
resolution of 0.01°, and an absolute accuracy of 2°. You can read more
about the device at http://pnicorp.com/productDetail?nodeId=c39b.

Thanks,
Jack
Click to expand...
 
"Jack Valmadre" <jack.valmadre@optusnet.com.au> wrote in message
news:44318874.0401150338.b73d7ba@posting.google.com...
I've recently purchased a Vector 2Xe digital compass sensor for
AU$170, not realising that it operates at 3V rather than 5V. The rest
of my system is 5V, so I can't use it.

The company, Weather Down Under, are not prepared to accept an
exchange as they do not regularly stock this item, so I am hoping to
find a buyer over the internet. The sensor is brand new and has never
been used. It's not damaged in any way.

I'd like to sell it for $100 (inclusive of postage) to help me pay for
the 5V Vector 2X I require. Please e-mail me at
jack[DOT]valmadre[AT]optusnet[DOT]com[DOT]au if you're interested.

The Vector 2Xe uses SPI (Serial Peripheral Interface) to communicate
with a microcontroller. It draws less than 1mA at 3V. It has a
resolution of 0.01°, and an absolute accuracy of 2°. You can read more
about the device at http://pnicorp.com/productDetail?nodeId=c39b.
Click to expand...
Top posts moved so we can all understand what's going on.

"Adrian Jansen" <qqv@noqqwhere.com> wrote in message
Have you checked that the SPI lines are 5 volt compatible ? Many SPI
devices using 3 volt supplies are 5 volt tolerant in those lines, in which
case you just need a 3 volt regulator for the power supply.
Click to expand...
On Thu, 15 Jan 2004 23:42:14 GMT, "gcd"
<gcdmelbSPAM@austarmetro.com.au> wrote:
And if not, there are 3V to 5V logic translator ICs available, bidirectional
ones too. you could buy quite a few with that $70 loss.
Click to expand...
Even easier:

3V supply - 3V0 zenner (BZX84-C3V0, Farnell 738-128) and a resistor

SPI out - 2 x NPN transistors and 3 resistors (Maybe nothing if the
2Xe get high enough to trip the logic in the micro - which it may
well do)

SPI in - 2 resistors

Total cost about $1.00

Mike Harding
 
Their calibration algorithms may have improved. I used some modules from
them a few years ago, and found the calibration was skimpy at best. The two
sensors are often different sensitivities, and there was no attempt to
correct for this, leading to big errors. I ended up just using the sensors,
and making my own driver system and calibration, to guarantee 2 degree max
error. Maybe they have improved, but I would check before relying on the
readouts as is.

And I prefer top posting.

--
Regards,

Adrian Jansen
J & K MicroSystems
Microcomputer solutions for industrial control
"gcd" <gcdmelbSPAM@austarmetro.com.au> wrote in message
news:40072b96@news.comindico.com.au...
Hi again,
also, I'd buy from the mob you had a link too. much cheaper given the aus
dollar at the moment.

One thing I did see in the manual was the calibration info is very
limited.
I've used honeywell compasses and there is a specific process to go
through
to cal the compass. In their instance this involved rotating the compass
slowly 720 degrees and rocking the compass in pitch and roll (this compass
had a 2 axis tilt sensor to correct for pitch and roll).
The compass then determined the correction factors for the ellipsoid
pattern
it got.

In the compass you have there is no explanation of the cal process, are
there any other documents with the compass?

Greg


"Jack Valmadre" <jack.valmadre@optusnet.com.au> wrote in message
news:44318874.0401150338.b73d7ba@posting.google.com...
I've recently purchased a Vector 2Xe digital compass sensor for
AU$170, not realising that it operates at 3V rather than 5V. The rest
of my system is 5V, so I can't use it.

The company, Weather Down Under, are not prepared to accept an
exchange as they do not regularly stock this item, so I am hoping to
find a buyer over the internet. The sensor is brand new and has never
been used. It's not damaged in any way.

I'd like to sell it for $100 (inclusive of postage) to help me pay for
the 5V Vector 2X I require. Please e-mail me at
jack[DOT]valmadre[AT]optusnet[DOT]com[DOT]au if you're interested.

The Vector 2Xe uses SPI (Serial Peripheral Interface) to communicate
with a microcontroller. It draws less than 1mA at 3V. It has a
resolution of 0.01°, and an absolute accuracy of 2°. You can read more
about the device at http://pnicorp.com/productDetail?nodeId=c39b.

Thanks,
Jack
Click to expand...
 
On Sat, 17 Jan 2004 14:30:55 +1000, "Adrian Jansen"
<qqv@noqqwhere.com> wrote:

And I prefer top posting.
Click to expand...
Really?

Adrian Jansen
J & K MicroSystems
Microcomputer solutions for industrial control
Click to expand...
Do you also write the code before you understand
the algorithm?

Mike Harding
 
"Adrian Jansen" <qqv@noqqwhere.com> wrote


And I prefer top posting.

Adrian Jansen
J & K MicroSystems


**** Marvellous ad for your business !!!!!!!.I wonder how many potential
customers you have managed to turn off with your prejudices?Ever hear of
PR?

Brian Goldsmith.
 
Brian Goldsmith <brian.goldsmith@nospamecho1.com.au> wrote in
message news:WQ4Ob.15847$Wa.10694@news-server.bigpond.net.au...
Adrian Jansen <qqv@noqqwhere.com> wrote

And I prefer top posting.

Adrian Jansen
J & K MicroSystems

**** Marvellous ad for your business !!!!!!!.
Click to expand...
Pathetic, really.

I wonder how many potential customers you
have managed to turn off with your prejudices?
Click to expand...
Only the terminal fuckwits like you. No loss to him.

Ever hear of PR?
Click to expand...
Ever heard of letting go of your dick before you end up completely blind ?

Most commercial operations top post in emails.

You get to like that or lump it, fuckwit.
 
"Brian Goldsmith" <brian.goldsmith@nospamecho1.com.au> wrote in message
news:WQ4Ob.15847$Wa.10694@news-server.bigpond.net.au...
"Adrian Jansen" <qqv@noqqwhere.com> wrote


And I prefer top posting.

Adrian Jansen
J & K MicroSystems


**** Marvellous ad for your business !!!!!!!.I wonder how many potential
customers you have managed to turn off with your prejudices?Ever hear of
PR?

Brian Goldsmith.
Click to expand...
Hypocrit.
 
"Brian Goldsmith" <brian.goldsmith@nospamecho1.com.au> wrote in message
news:WQ4Ob.15847$Wa.10694@news-server.bigpond.net.au...
"Adrian Jansen" <qqv@noqqwhere.com> wrote


And I prefer top posting.

Adrian Jansen
J & K MicroSystems


**** Marvellous ad for your business !!!!!!!.I wonder how many potential
customers you have managed to turn off with your prejudices?Ever hear of
PR?
Click to expand...
There is nothing more annoying than people who criticise other people's
posts when their own posts are so obviously imperfect. Ever heard of spaces
between sentences?


Mark
 
I dont want to buy into the interminable arguments about top vs bottom
posting. But I do prefer to read the new stuff at the top, so I post it
that way too.

How I design circuits and code is not relevant.

--
Regards,

Adrian Jansen
J & K MicroSystems
Microcomputer solutions for industrial control
"Mike Harding" <mike_harding1@nixspamhotmail.com> wrote in message
news:eek:1kh00t43n8fhqvdei6np863eqkq7h7a0f@4ax.com...
On Sat, 17 Jan 2004 14:30:55 +1000, "Adrian Jansen"
qqv@noqqwhere.com> wrote:

And I prefer top posting.

Really?

Adrian Jansen
J & K MicroSystems
Microcomputer solutions for industrial control

Do you also write the code before you understand
the algorithm?

Mike Harding
Click to expand...
 
"Mark Little" <markl@sa.apana.org.au> wrote in message
news:4008e9bc$1@duster.adelaide.on.net...
"Brian Goldsmith" <brian.goldsmith@nospamecho1.com.au> wrote in message
news:WQ4Ob.15847$Wa.10694@news-server.bigpond.net.au...

"Adrian Jansen" <qqv@noqqwhere.com> wrote


And I prefer top posting.

Adrian Jansen
J & K MicroSystems


**** Marvellous ad for your business !!!!!!!.I wonder how many potential
customers you have managed to turn off with your prejudices?Ever hear of
PR?

There is nothing more annoying than people who criticise other people's
posts when their own posts are so obviously imperfect. Ever heard of
spaces
between sentences?
Click to expand...
Forget him, he has never contributed one single piece of usefull information
to this group.
 
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