Gyro Sensor

Forum 2005-2010 (read only) Hardware Interfacing
1

I have a gyro sensor and am trying to use it to determine angular displacement. The basic equation i am using is:

degree=degree+(angv*time)
delay(time)

When it is in the 0degree position there is a slight drift which i expect. However, when i move the gyro a little and return it back to its original position the gyro returns some insane amount such as 3 degrees or even 5degrees. the drift at the beginning appears to be at an extremly slow rate therefore getting a reading of 5 or 3 degrees at an actual stable/0 degree position is crazy. I have no idea what is going wrong with this. It makes me wonder how on earth a segway doesnt fall over.

2

I think your problem might be the delay. You are probably missing some movement by not taking samples often enough. It's called sub Niquis sampling.

3

To save your googling frustration, it's "Nyquist"

4

Thanks, my spell checked didn't have that one. :slight_smile:

I did a quick web search with what I went with and did get reference to French mathematicians so it looks like other can't spell it either. :wink: