[aprssig] Cool new sensor

Scott Miller scott at opentrac.org
Tue Mar 24 23:07:13 EDT 2015

If it's a multi-axis magnetometer, that would probably be a better way 
to measure wind speed than the accelerometer.

I've been meaning to try 3D printing a clip-on cup anemometer holder for 
my phone.  The anemometers I've got have magnets to trip reed switches 
and could probably be picked up pretty easily by the phone's magnetometer.


On 3/24/2015 3:30 PM, Mark Cheavens wrote:
> So we stick in a weather vane, spin the device with a "prop" and use 
> the accelerometer to measure wind speed, the magnetometer to measure 
> wind direction..........
> (and of course we have pressure and temp)....Now how can we make it 
> reliable and in balance...
> Mark
> At 03:46 PM 3/24/2015, you wrote:
>> Every time I think things can't get easier... Digikey emails me with 
>> a new gem.
>> TI just came out with a little tag device with low power bluetooth. 
>> It has precision humidity, temp, pressure, three axes each of 
>> accelerometer, gyroscope, and magnetometer in a flat package smaller 
>> than a credit card powered by a button battery, for $45.
>> Free iOS and Android apps, cloud support included.
>> http://www.digikey.com/product-search/en?mpart=CC2650STK&v=296
>> Steve K4HG
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