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[Jacopo Pianigiani]

Posted on April 03, 2017 at 12:56Apple watch accelerometer axis range

Hi good morning,

I'm developing an apple watch health care application. After a search i discover an ST microelectronics accelerometer sensor mounted on a system on a chip internally.

Here there is the sensor data sheet: 

http://www.st.com/content/ccc/resource/technical/document/datasheet/a3/f5/4f/ae/8e/44/41/d7/DM00133076.pdf/files/DM00133�

I want to know one only thing: Which is the full scale range ? I read the data sheet but i've found 4 differents range for range on axys (2G, 4G, 8G, 16G)!

I'm not very expert with data sheet reading, someone can help me ?

Thanks in advance, have a good lunch!

#applewatchaccelerometer #fullscalerange #accelerometer

[Miroslav BATEK]

Posted on April 04, 2017 at 18:06

I don't have any experience with applications for Apple Watch, but the range can be changed dynamically during sensor operation by operation system. I assume it is transparent for the application and the OS should provide directly acceleration value in g or m/s2 to your application.

[Jacopo Pianigiani]

Posted on April 07, 2017 at 12:17

Yeah I know the Sensor is programmable, but the built in sensor inside the Apple Watch is not programmable from external, so it is set to a specific range. 

I don't know which is the range maybe I should to write to support center to know it? 

Thank you for reply