creates a new
Magnetometer object which returns information about the
magnetic field as detected by a device's primary magnetometer sensor.
Options are as follows:
The desired number of times per second a sample should be taken, meaning the number of times per second that the
readingevent will be called. A whole number or decimal may be used, the latter for frequencies less than a second. The actual reading frequency depends on device hardware and consequently may be less than requested.
'screen'. The default is
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