downloading data with USB
When I use the sensors in logging mode I usually do quite long tests (more than 1h). Downloading the data, the time is almost double the time of the test (I sample accelerometers and gyroscopes at 100 Hz). I would like to know if there is a way to download them faster.
To do this I tried to connect the sensor via usb (I saw that there is the new function for MMS with python scripts). However every time I connect the sensor it takes more than a minute to connect and when disconnected it is no longer detected by bluetooth (I was able to connect only after doing 2 resets manually and this method does not always work). Also, even with USB the data download time is similar to bluetooth. can you tell me if I'm doing something wrong ?
Comments
[even with USB the data download time is similar to bluetooth]
I have found similar time constraints with USB download, which doesn't make sense to me either. I have another comment open for mbientlab team @Laura here https://mbientlab.com/community/discussion/4131/mms-usb-log-download-speed-100-samples-second#latest.
It appears that firmware needs to be 1.7.0 for USB download to connect and actually work.
Correct. 1.7.0 is required.
You need the latest Python SDK as well.
Our sensor doesn't work like a USB flash device, USB is more like a serial port and so it's a bit slower.