[Swansea Hackspace] measuring geomacnetic activity

[Emyr Morris]

This little sensor the HMC5883L is low cost and very powerful

it can be used to measure magnetic field in x, y and z and can even measure
activity as experienced over the past two weeks due to CME/Solar Flare

for more about the sensor see

http://www.meccanismocomplesso.org/en/arduino-magnetic-magnetic-magnetometer-hmc5883l/

and a blog article on measuring activity

http://gm1sxx.blogspot.co.uk/2015/06/the-clue-is-in-name-other-uses-for.html

the chap who did the blog post spent about $20 on the entire project. A
true Scottsman ;-)

All very clever stuff!

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