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First mag plot

A project log for Aurora Observatory

BLE Triaxial Earth Field Magnetometer to alert for Aurora Borealis activity and for earth field work

chasinspinChasinSpin 08/22/2015 at 23:290 Comments

Here's the first magnetometer plot using the dual wound coil and security tag. Bench mounted in a noisy environment and hooked up via USB. Axis was approximately East/West. X-Axis is "Hours (UTC)", Y-Axis is the frequency delta change of the magnemeter output offset from a chosen point.

The coils are very sensitive, reacting to anything nearby, small magnets, pliers, even my chair and need to investigate if the bumps are temperature related (i.e. Air Conditioning Cycling), or the Aurora (there was activity at the time). This prototype has a Polyester Capacitor, replacing with an X7R.

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