[aprssig] Cool new sensor

Scott Miller scott at opentrac.org
Tue Mar 24 22:07:13 CDT 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.

Scott
N1VG

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
> KC5EVE
> 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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