The Factory | Calibrating Magnetometers & Raw Data Applications

Magnetometers are able to measure the strength of magnetic fields. Combine the readings from two axes using trigonometry and you have a compass! This week in #TheFactory we're taking a look at the latest PiicoDev 3-axis Magnetometer prototype and brainstorming some fun and useful applications for magnetometers.
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[@ReflectingMe2024]

I mentioned in a previous video and I'll say it again folks, this is absolutely awesome content, so interesting.

[@jyvben1520]

magnetic gestures, close encounters, making music, extend the range by using several sensors vertical and opposite

[@jorchmendozachok6342]

For correct calibration, please check hard and soft iron adjustment.

[@josuepati1]

Definitely, interesting topic. Keep doing that

[@LuizEnger]

Nice video!
Reading QMC6310 datasheet, it informs a sensitivity of 15000 LSB/G in the field range of +/- 2 G. Could you specify more on how to calculate the magnetic field amplitude? Thanks!

[@MichaelRuppe]

Find the magnitude of the three-dimensional vector: amplitude = sqrt( x^2 + y^2 + z^2)

[@LuizEnger]

@@MichaelRuppe Your equation is correct to give the magnitude of the field vector, but not exactly what I was asking for. After some reading, I figured it out.

[@rdpeake]

how effective could you use a magnetometer, and 3 axis aligned electromagnets (coils) (preferably on the same core) to get dead reckoning of that object in 3space?

[@Core-Electronics]

Like all involved project - it depends! We can see that there's a pretty clear correlation between field strength and the raw reading on an axis.
I guess the tricky part would be coming up with an appropriate trilateration algorithm. The field will change wildly depending on the magnet's pose - if the magnet is rotated in place the data will change, but the location will not... tricky!

[@happyhappytime869]

That is very interesting

[@Core-Electronics]

Glad to hear it 😄

[@olivercouch1651]

I saw this video a while ago on the re-engineering of the Tesla door handles. It's a really clever application of a magnetometer: ruclips.net/video/Bea4FS-zDzc/видео.html
Loving the enthusiasm fellas :D

[@SteveM45]

Is this the Same as in Smartphones?

[@karlbuellesbach8715]

Very interesting …

[@dreamscomingtrue2446]

accelerometer and gyroscope

[@thembatshabalala9580]

This video is very misleading. They do not calibrate Magnetometers. They just show the difference when between a calibrated and an uncalibrated magnetometer. What a waste of 10 mins of my life