[Shimmer-users] Questions about gyroscope (9DoF shimmer)

[Jose F. Mingorance-Puga]

Hello,

Has anyone tried to change the sensitivity of the gyroscope (+-110
degrees from/to +-500 degrees) ? If so, would be great to know a working
example on TinyOS.

I am also curious to know, what is the reason behind using a one axis
gyroscope combined with a separate two axis gyroscope, instead of using
just one three axis gyroscope?


Sincerely,

Jose F. Mingorance-Puga

[Benjamin Kuris]

Jose,
Please review the manual, the sensitivity change requires you to move some
resistors on the board. The firmware doesn't change.

At the time of design three axis gyroscopes were not available. Also
Shimmer currently uses analog output gyros, and I don't believe three-axis
analog output parts are common.

While analog parts are more power hungry and lack variable embedded
LPF/interrupt generation, they offer a nice hardware-level abstraction--
meaning that all analog transducers behave in a similar fashion and silicon
from different vendors can be used without firmware changes.

-Ben


On Wed, Mar 6, 2013 at 4:10 AM, Jose F. Mingorance-Puga <

Post by Jose F. Mingorance-Puga
Hello,
Has anyone tried to change the sensitivity of the gyroscope (+-110 degrees
from/to +-500 degrees) ? If so, would be great to know a working example on
TinyOS.
I am also curious to know, what is the reason behind using a one axis
gyroscope combined with a separate two axis gyroscope, instead of using
just one three axis gyroscope?
Sincerely,
Jose F. Mingorance-Puga
______________________________**_________________
Shimmer-users mailing list
https://lists.eecs.harvard.**edu/mailman/listinfo/shimmer-**users<https://lists.eecs.harvard.edu/mailman/listinfo/shimmer-users>