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Step 11What's the polarity?
With any luck, it will make a tone when you press the button.
With more luck, the tone will change when you get the sensor near a magnet.
Hang a magnet by a string or float it. The end pointing North is North.
On mine, the pitch goes up with the south pole of a magnet near the bottom of the sensor.
And down with a north pole near the bottom.
And up with the north pole near the top.
And down with the south pole near the top.
That's it.
With more luck, the tone will change when you get the sensor near a magnet.
Hang a magnet by a string or float it. The end pointing North is North.
On mine, the pitch goes up with the south pole of a magnet near the bottom of the sensor.
And down with a north pole near the bottom.
And up with the north pole near the top.
And down with the south pole near the top.
That's it.
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