Tilman Baumann wrote:
Bluetooth would be nice. You would need no hardware hacks on the phone
itself.
Should be pretty easy to hack a bluetooth->serial converter (like
BlueSMiRF from sparkfun) to the sensor. Maybe with a little
microcontroller glue in between.
Bluetooth is very simple to code and simple to handle.
I was thinking about two possible applications:
1. The map of a GPS map viewer application turns when you turn the
machine so it is always aligned with the environment (this feature
is included on some GPS tools.)
2. A software rendered compass (I have already seen one on a phone as
I mentioned in a previous mail)
Certainly these applications work best when the magnet sensor is fixed
to the device itself :-). BT may work, but is an overkill. The I2C
solution sugested by joerg and Robert Paulson seems to fit better.
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