Alexander Avtanski
Guest
Sat Jan 21, 2012 5:45 am
Hello,
A couple of months back I needed some help with a magnetometer I was
building. I had problems choosing the right material for the torsion
spring.
With help from this group, the magnetometer is now complete and
working fine for more than a month:
http://avtanski.net/projects/magnetometer
Thanks!
- Alex
amdx
Guest
Sat Jan 21, 2012 5:58 am
On 1/20/2012 9:45 PM, Alexander Avtanski wrote:
Quote:
Hello,
A couple of months back I needed some help with a magnetometer I was
building. I had problems choosing the right material for the torsion
spring.
With help from this group, the magnetometer is now complete and
working fine for more than a month:
http://avtanski.net/projects/magnetometer
Thanks!
- Alex
Nice job Alex!
That is really cool.
It wasn't clear to me, did you use the copper torsion band
for hanging the mirror?
Can tell me a little about the schematic,
Specifically In 2 and JP 1 , I'm thinking part of calibration.
Mikek
Alexander Avtanski
Guest
Sat Jan 21, 2012 8:09 am
On Jan 20, 8:58 pm, amdx <a...@knologynotthis.net> wrote:
Quote:
On 1/20/2012 9:45 PM, Alexander Avtanski wrote:
Hello,
A couple of months back I needed some help with a magnetometer I was
building. I had problems choosing the right material for the torsion
spring.
With help from this group, the magnetometer is now complete and
working fine for more than a month:
http://avtanski.net/projects/magnetometer
Thanks!
- Alex
Nice job Alex!
That is really cool.
It wasn't clear to me, did you use the copper torsion band
for hanging the mirror?
Can tell me a little about the schematic,
Specifically In 2 and JP 1 , I'm thinking part of calibration.
Mikek
Thanks.
Yup, I used the copper torsion band. I'll have to update the text to
make this clear.
Regarding IN2 and JP1: The data logger is the same device that I used
in several other projects before installing it [semi]permanently in
the magnetometer. IN2 is for a different kind of sensor - it provides
DC decoupling capacitor. JP1 is for switching between the inputs - it
is actually embedded in the sensor cable, so depending on what kind of
sensor I plug in, it gets connected in different place.
Regards,
- Alex
Paul Hovnanian P.E.
Guest
Sat Jan 21, 2012 6:49 pm
Alexander Avtanski wrote:
Quote:
Hello,
A couple of months back I needed some help with a magnetometer I was
building. I had problems choosing the right material for the torsion
spring.
With help from this group, the magnetometer is now complete and
working fine for more than a month:
http://avtanski.net/projects/magnetometer
Thanks!
- Alex
Cool. What's up with the 9:00 PM dip?
--
Paul Hovnanian mailto:Paul_at_Hovnanian.com
------------------------------------------------------------------
Entropy: When your shoelace comes untied, you can't fix it
by walking backwards.
Alexander Avtanski
Guest
Sat Jan 21, 2012 10:52 pm
On Jan 21, 9:49 am, "Paul Hovnanian P.E." <p...@hovnanian.com> wrote:
Quote:
Alexander Avtanski wrote:
Hello,
A couple of months back I needed some help with a magnetometer I was
building. I had problems choosing the right material for the torsion
spring.
With help from this group, the magnetometer is now complete and
working fine for more than a month:
http://avtanski.net/projects/magnetometer
Thanks!
- Alex
Cool. What's up with the 9:00 PM dip?
--
Paul Hovnanian mailto:P...@Hovnanian.com
------------------------------------------------------------------
Entropy: When your shoelace comes untied, you can't fix it
by walking backwards.
This is the regular daily variation of the magnetic field. The exact
time of the dip depends where you are located on Earth, but it more or
less remains constant from day to day. Here is more info:
http://www.geomag.bgs.ac.uk/education/earthmag.html#_Toc2075560
Alexander Avtanski
Guest
Sat Jan 21, 2012 10:57 pm
On Jan 21, 12:52 pm, Alexander Avtanski <avtan...@gmail.com> wrote:
Quote:
On Jan 21, 9:49 am, "Paul Hovnanian P.E." <p...@hovnanian.com> wrote:
Alexander Avtanski wrote:
Hello,
A couple of months back I needed some help with a magnetometer I was
building. I had problems choosing the right material for the torsion
spring.
With help from this group, the magnetometer is now complete and
working fine for more than a month:
http://avtanski.net/projects/magnetometer
Thanks!
- Alex
Cool. What's up with the 9:00 PM dip?
--
Paul Hovnanian mailto:P...@Hovnanian.com
------------------------------------------------------------------
Entropy: When your shoelace comes untied, you can't fix it
by walking backwards.
This is the regular daily variation of the magnetic field. The exact
time of the dip depends where you are located on Earth, but it more or
less remains constant from day to day. Here is more info:
http://www.geomag.bgs.ac.uk/education/earthmag.html#_Toc2075560
Just one more thing - this daily variation is caused by ionospheric
currents high in the atmosphere. I find it really exciting that and
cool thinking about the fact that a simple device buried in my garden
can monitor something that's happening at the edge of space...
