Wrong acceleration values when sampling at 800Hz

michele86

Hallo,

I'm new to this nice tool, so be patient if I'm asking something maybe stupid.

I just need to plot the acceleration changes. I am enabling only the accelerometer sensor with the app "MetaBase" and after the config phase I am capturing and sending the csv file to my compute (plotting the data on Excel).

Until lst week everything was working fine no matter sampling frequency I was using. Instead now if I chose a sample f <=100Hz everything works fine (I am able to see acceleration profiles coerent with the movement performed), using 200-400-800Hz I always receive the same data (x,y values almost null) and z almost costant to 1 (basically the data I would receive keeping the sensor still, whereas I am actually moving it).

I thought the only limitation with f higher than 100Hz is for displaying in real time values, why am i having problems also for the logging?

I already tried to unistall and install again the app. Andoird vs is 4.4.2

Thanks in advance for your help!

Eric

• What type of board are you using and what firmware is it running?
  
• Where you only using the MetaBase app the entire time?
  

michele86

Hi Eric,

I am using MetaHealth vs C (hw revision 0.3). Fw version 1.2.5

I am using only MetaBase and MetaWear apps.

Eric

MetaHealth board?  Or do you mean MetaWear C?

Hrm, this is an odd behavior given that everything was working before.  Can you try re-flashing the firmware with the MetaWear app and using a fresh coin cell battery?