[aprssig] Android HUD Development

[Jan L. Peterson]

On 06/10/2011 12:30 PM, Rud Merriam wrote:
> I think timing would be a challenge with the magnetometer. My game
> Galactic Patrol: Zap GPS uses the compass and gravity sensors. You
> position the phone to shoot down GPS satellites. The sensors don't
> respond all that quickly on my G1 phone and the response is pretty
> sloppy and dependent on what else is running on the phone. They are
> useful for their purpose but transferring signals isn't one of those
> purposes. 

I think Scott was talking about this:
http://jdesbonnet.blogspot.com/2011/05/arduino-to-android-io-on-cheap-aka-poor.html

Reading the fine article reveals that the guy was able to get about
7bps... *bits* per second.  Pretty low baud rate.  How long is the
typical APRS message?  A quick glance at aprs.fi shows at least one
message from MB7UIK that is 131 characters long.  That's about 19
seconds to transfer over the magnetometer.

Still, kind of cool.

	-jan-
-- 
Jan L. Peterson (KD7ZWV)