View Single Post
  #5   Spotlight this post!  
Unread 16-02-2012, 03:39
wireties's Avatar
wireties wireties is offline
Principal Engineer
AKA: Keith Buchanan
FRC #1296 (Full Metal Jackets)
Team Role: Mentor
 
Join Date: Jan 2006
Rookie Year: 2004
Location: Rockwall, TX
Posts: 1,169
wireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond reputewireties has a reputation beyond repute
Send a message via AIM to wireties
Re: ADXL345 - too noisy

Quote:
Originally Posted by EricVanWyk View Post
If I recall correctly, the zero-g drifts while it is coming up to temperature. However, I thought that had more of an impact on the gyro than the accelerometer. Does it stabilize eventually?

How does the measured noise compare with what the data sheet indicate?

Great question - I'm not sure how long it takes to come up to temperature. We'll try to determine that - thanks for the input. Maybe we can read the temperate sensor on the gyro and compensate. The noise is much more than the data sheets indicates but we are pretty sure most of it is real. The sensor is fine, the robot is just a nasty mechanical environment.
__________________
Fast, cheap or working - pick any two!
Reply With Quote