Hi Mark, I second Paul Henning, here in Europe we use officially the SI standard, does mean m/s and hPa!
Privately used other units are another thing like km/h or units Beaufort and mb (millibar), but not official. If possible use always the international SI units and as personal choice km/h, hPa and millibar are anyway same numbers. Regards Arnold Am 24.05.2014 03:16, schrieb Mark Sims: > I am building a weather sensor that includes a ultrasonic anemometer to > measure wind speed, direction, and air temperature. It uses 4 cheap ($1 > each) HC-SR04 ultrasonic rangefinder modules that output a pulse width > proportional to the time of flight of the sound signal (topic is time nut > related since it simultaneously measures the speed of sound in 4 directions > to a pretty good accuracy/resolution using a cheap-ass microprocessor - > ATMEGA328 (like and Arduino)... and does so wbbithout using any > counter-timer channels). > Now the question... I would like it to be able to output data in imperial or > metric units. In what units is the typical wind speed reported (meters/sec, > km/hour, ?). Also air pressure (millibars/hectopascals/pascals/?). > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
