Salve! Could the multi-touch sensor be used as light sensor? Would it work in two direction (two sides of the display with on corner) even better 2D (4 sides of the display)?
Then no additional sensor would be necessery (instead of the additional sensor would be less power consumpting) and the direction where the most light came from could be used as well: Hold the Neo1973 into direct sun light. Based on the time (and longitude informaion) it could be used as sun-compass. Hacking the multi-touch sensor software for rotating maps - such a sun compas would let routate the map automaticaly in North-South direction (the same as a electronical compas would work) The sun compass could use to calibrate or check the magneticaly one. Or use it as Sextant :) Hang up your Neo1973 and fix it vertical with sun on your display. Calculate the cenit position and time for the sun. Messure the time between sunrise and sundown and use this for calculating time or/and position. When the sensor is sensitive enough - do it with the moon as well. In case that the multi-touch sensor isn't sensitive enough - use two seperate light sensors. And when you know your position and time with AGPS, the two high sensitive light sensors could use to calculate the inclination. A third (or more) high sensitive sensor could help to use the sun compass in all ways you hold your Neo1973 into the sun. To do some old style navigation with the neo would be - fun - instructive (to learn to navigate without GPS) - and would be a fall back in case that GPS is switched of Wish you to have sun this weekend! rob _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/cgi-bin/mailman/listinfo/community
