Some time ago I made GPS module with MMC3120 magnetometer. I wanted to have possibility to place the module far away from magnetic and electromagnetic disturbances generated by the drive system in multicopters. Short after the magnetometer became not available. Now I made another, bit more optimised module with choice of mounting 3 magnetometers: MMC3140, MAG3110 and HMC5883. All it works on I2C bus.

In last days I made comparison of the magnetometer parameters. I compared the data span, noise level, sensitivity to ambient temperature change.

Results of test you can find in article on my website: Comparison of magnetometers



If you are interested in comparisons, some time ago I made similar comparison of pressure sensors where was compared MPXH6115, BMP085 and HP03SA.

Views: 3952

Comment by eduardo on November 17, 2012 at 9:56am

Hello friend ...

At first i think this another ridiculous post as another ones posted here but after i read this is very good and util post.


Comment by W. Joe Taylor on November 17, 2012 at 10:18am
I really enjoyed touring your web site. The data you provide is exactly what is needed to compare performance limitations for magnetometers and explain operation. Thanks a lot. Also, I had no idea what a varometer was. What a great way to keep tabs on a flight! As soon as I get a little extra cash I'm hoping to get some of your instruments to play with.
Comment by Nick Arsov on November 17, 2012 at 11:26am


Do you have any view over Bosch-Sensortech magnitometers? If so, it would be interesting to place your tests here.

Best regards


Comment by Pitlab on November 17, 2012 at 11:39am

Hi Nick, I have never heard about Bosh magnetometer. Could you provide link to it?

Comment by Nick Arsov on November 17, 2012 at 11:54am


Here you are - . I'm going to pay attention to their BMI055 6 axix and BMX 9 axis ICs. The compasses are here -

Best regards


Comment by Pitlab on November 17, 2012 at 12:09pm

Thank you for the link, it looks promising. Will try to order a sample and compare it with other sensors I have.

Comment by Vladimir "Lazy" Khudyakov on November 18, 2012 at 11:35am

Piotrze, jakie są wnioski? :))

Comment by Pitlab on November 18, 2012 at 12:48pm

Hi Nick

I ordered BMC050 magnetometer and BMG160 gyroscope from Bosh. Will test it when will have it on my desk. After weekend will try to order BMX055, but probably the results should be compareable.

Comment by Alysson on December 20, 2012 at 8:52pm

Hi.......I had associated Gaussmeter / magnetometers with measuring of magnetic field-components of EMFs and their health effects etc because of some popular paranormal shows on TV. I also found sites which say every household needs a magnetometer.I had no idea it was a scientiic tool for better purposes. . Turns out advanced magnetometers have their usage in magnetic surveys, submarines detection, UAV, archaeology ,earth sciences and many other fields and the miniaturized magnetometers have been used as compass in mobile phones for quite some time.


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