Tested MetawearR but it lost lots of data

Alan

Hi,
We tested MetawaerR to keep streaming 9-axis data for 22 hours in the Windows app, all the sensors were at the 25 Hz sampling rate, but it only got roughly 76k data in each sensor at the end. In the csv file, it showed that it stop received data for a long time and received the data again.
It seems like lose many of the data, do you know how to get data reliable in 24 Hr?
We are building smart toys that can track children's motion, and we want to use your Metawear sensor to get the raw data.
Using those data to estimate the relative position/ trajectory, if you have any similar experience about this, could you please share to me?

Eric

• Post data showing the data loss
• What do you mean by "tested MetaWear R"?

Alan

• I missed the data first time I collected, I tested again. Compared to the samples I got and the sampling rate, I think this time looks more make sense.
• I used Metabase app Windows version connect to MetaWear R and get 9-axis data.
• I want to use Raspberry pi 3B as a hub to collect and save data. Recently I based on pymetawear, but I found out that Metahub also has Metabase app install in Raspberry PI. Is there any way to install Metawear app on my Raspberry Pi? Because I didn't see how to get the app on your tutorial ( https://mbientlab.com/tutorials/MetaHub.html ).
  Thanks,

Eric

• Where should I be looking in the CSV files for the data loss?
• Yes, I know you were using the windows app. That does not fully answer my question. I need the steps to reliably reproduce the issue.
• That version of MetaBase is only for MetaHub buyers. Since you are a MetaHub owner, contact support to see if they can provide an image.