Hi Jong, Your advice worked. With single accelerometer I am able to get 2048 Hz. Reducing the number of sensors to accelerometer and gyroscope I am able to get 512Hz, which is sufficient for my application right now.
Thank you. best, Shri On Tue, Feb 10, 2015 at 10:20 PM, Jong Chern <[email protected]> wrote: > Hi Shri, > > Unfortunately with the number of sensor channels and the sampling rate you > are using this wont be possible. > > There are two limiting factors. The first is the Shimmer baud rate. The > default baud rate is 115200, I would suggest increasing it to 230400, you > should be able to do this using Shimmer Capture which can be found here > <http://www.shimmersensing.com/support/wireless-sensor-networks-download>. > > The second limiting factor is your Android device (*not being able to > consume data fast enough causing a bottleneck which results in dropped data*). > This probably varies across Android device. > > My advice will be to increase the baud rate, reduce the sampling rate, and > reduce the number of sensors (e.g. choose a single accelerometer). I hope > that help. Please do note hesitate to contact Shimmer > <http://www.shimmersensing.com/support/wearable-sensing-support/>if you > require further technical assistance. > > Best regards, > Jong Chern > > > > > > On 10/02/2015 00:57, Shrirang Mare wrote: > > Hi Jong, > > I have Low noise accelerometer, wide range accelerometer, gyroscope, and > magnetometer enabled. I also have enabled battery voltage. > > thanks, > Shri > > On Feb 9, 2015, at 5:37 AM, Jong Chern <[email protected]> wrote: > > Hi Shri, > > Sorry to hear about your troubles. May I ask as to what sensors you have > enabled on your Shimmer device? > > Best regards, > Jong Chern > > On 09/02/2015 04:05, Shrirang Mare wrote: > > > I can't seem to get data from Shimmer3 at sampling rate higher than > 340Hz. > > I configured my Shimmer3 using the ShimmerCapture Android app and set > the sampling rate to 1024 but the data being saved to the file is at about > 341Hz. When I set the sampling rate of the Shimmer3 to 512Hz, it actually > logs data at about 256Hz. > > Any ideas on how to get higher sampling rates on Shimmer3? I am looking > to get 1024 Hz. > > I have another Shimmer3 and I tried sampling at 1024 and 2048Hz on it > too but I get about 400 and 450Hz sampling rates. Or is it that both the > Shimmers have some hardware problem? Any ideas on what might be wrong or if > I'm missing something. > > The Shimmer3 is running BT_Stream firmware version 0.5 > > thanks, > Shri > > > _______________________________________________ > Shimmer-users mailing > [email protected]https://lists.eecs.harvard.edu/mailman/listinfo/shimmer-users > > > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2013.0.3495 / Virus Database: 4257/9077 - Release Date: 02/08/15 > > > _______________________________________________ > Shimmer-users mailing list > [email protected] > https://lists.eecs.harvard.edu/mailman/listinfo/shimmer-users > > > > > _______________________________________________ > Shimmer-users mailing > [email protected]https://lists.eecs.harvard.edu/mailman/listinfo/shimmer-users > > > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2013.0.3495 / Virus Database: 4257/9082 - Release Date: 02/09/15 > > > > _______________________________________________ > Shimmer-users mailing list > [email protected] > https://lists.eecs.harvard.edu/mailman/listinfo/shimmer-users > >
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