Electronics > Open Source Hardware

Help me build a DIY Magnetometer, Gussmeter with an Hard Disk Head

(1/3) > >>

Bounty:
Hello evryone, I would like to build an OpenHardware project here:

a DIY Magnetometer Gussmeter using an Hard Disk Head.

https://en.wikipedia.org/wiki/Magnetometer

https://en.wikipedia.org/wiki/Disk_read-and-write_head





Why ? Because I need a magnetometer to measure from 1 to 20 Tesla to be put in a gap of 0.5 - 0.25 millimeters
like in the gap of the following picture:


I have asked for the same help here:
http://forums.hackaday.com/viewtopic.php?f=4&t=3751

Thank you in advance

DavidDLC:
Just buy one of the shell, with I2C or SPI interface, that will be the easiest way to do it

If you make your own, how are you going to make sure you are reading the correct Tesla ?

Remember you need to compensate for earth magnetic field as well on any case

David.

Bounty:

--- Quote from: David ---Just buy one of the shell, with I2C or SPI interface, that will be the easiest way to do it
--- End quote ---

I need a magnetometer to measure from 1 to 20 Tesla to be put in a gap of 0.5 - 0.25 millimeters
The problem is the gap size, most Hall sensors seem to have a package with a thickness of 1 millimeter
which is too thick.  I'will look better on the internet later today.

Thank you for the following advices.

--- Quote from: David ---If you make your own, how are you going to make sure you are reading the correct Tesla ?

Remember you need to compensate for earth magnetic field as well on any case

David.
--- End quote ---

madshaman:
The following idea occurred to me after reading your last post:

File down the ceramic/plastic package from an off-the-shelf sensor until it fits?  ^^'

Might be a s**t idea, but it might work.

madshaman:

--- Quote from: DavidDLC on September 26, 2013, 11:37:55 pm ---Just buy one of the shell, with I2C or SPI interface, that will be the easiest way to do it

If you make your own, how are you going to make sure you are reading the correct Tesla ?

Remember you need to compensate for earth magnetic field as well on any case

David.

--- End quote ---

Idea 2: use an off-the-shelf sensor to calibrate/characterise your hacked one?

Navigation

[0] Message Index

[#] Next page