Salve Richard! On Tue, 12 Dec 2006, Richard Franks wrote:
> On 12/12/06, Robert Michel <[EMAIL PROTECTED]> wrote: > >Doing distance messuring with ultrasonic? > >;)) > >40kHz example: > >http://www.parallax.com/dl/docs/prod/audiovis/Distance28015.pdf > > Interesting article... 3.3m ping is not insignificant, especially in > dark/smoke-filled environments. I think longer distances should be possible as well, especialy with software calculations :) - e.g. how far away is the front of that building... To have accurate distance messuring a themomether could help... but knowing a distance - e.g. the hight of a room, sound could be used for doing temperature messuring - as an integration of all temperatures between device and refeletor (or sender and receiver). That would make possible to put the Neo1973 on a table and track the temperature - in case of changing, it could give an alarm = very simple fire alarm. Not soooo good, because the smoke/fire gas COx are very dangerous and they could come into the room without changing the temperatur sinificant - but just as an idea. The other idea would be to make noice with the sound of male mosquito to adduct female mosquitos - I haven't yet a clue how that would help against them (together with a candel to burn them *g*).... But how to build a room scanner with moving the Neo1973 with your hands? The vibra could give you a timing how fast you should rotate your hand from right to left... and the result could be calculated as simple room-print? A combination with an acceleration sensor would give some nice potential. Greetings, rob _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
