[Shimmer-users] How to get Heart rate information from Shimmer sensor with BtStream

[Dang Thi Hai Ha]

Hi all,

I'm trying to monitor user's heart rate and GSR value using Shimmer
sensors. I have Shimmer sensors that are installed BtStream allowing to get
several kinds of values. I tested the python example to get GSR values and
range and it works fine. Now when I want to get heart rate information, I'm
kind of stuck!

I have some questions:

- First, BtStream seems to be able to get ECG Calibration values.
Basically, I calculate heart rate from the output of ECG values. So, this
ECC Calibration, is it the ECG values that we can use to calculate heart
rate? If yes, then what the DigitalHeartrate interface is for?

- Second, so I suppose I have to use ECG sensor to get ECG values to
calculate heart rate information. And suppose that my ECG sensor board is
installed BtStream. My question is which command should I use to get ECG
value? Is it GET_ECG_CALIBRATION_COMMAND ? And, how can I recover the
message received from the sensor? I mean, what is the structure of the
response package?

- Thirst question: can I use one sensor to get GSR and heart rate
values simultaneously? I would love to have that possibility but I doubt
it....

Thank you for your answers. :-)

Have a nice day!

Best,

Ha.