View Single Post
  #160   Spotlight this post!  
Unread 04-09-2014, 13:36
cjl2625's Avatar
cjl2625 cjl2625 is offline
apel py
AKA: Cory Lynch
FRC #2067 (Apple Pi)
Team Role: Programmer
 
Join Date: Jan 2013
Rookie Year: 2013
Location: Guilford, CT
Posts: 412
cjl2625 is a splendid one to beholdcjl2625 is a splendid one to beholdcjl2625 is a splendid one to beholdcjl2625 is a splendid one to beholdcjl2625 is a splendid one to beholdcjl2625 is a splendid one to beholdcjl2625 is a splendid one to beholdcjl2625 is a splendid one to behold
Re: Penalizing mecanum wheeled robots durring alliance selection.

About the gyros:
In our swerve drive, sometimes I'll turn on the robot and the gyro might start drifting at 3 deg/sec at times. Even when it doesn't drift this bad, it accumulated quite a bit of error in a match. This seems inevitable; we've replaced the gyro many times.

We have a gyro reset button, and I end up calibrating the gyro many times in match. Even with the reset, I sometimes find myself driving with 25+ degrees of error.
Somebody above said that this was impossibly disorienting, but I find it manageable.
I got used to gyro inaccuracies after some practice.

Nevertheless, we're determined to improve the system. We are going to try using two gyros, one mounted upside down. 1717 does this and says it helps a lot.

Even if I had to deal with gyro drift forever, if still greatly prefer field centric over robot centric
__________________
Head Programmer / Driver
Reply With Quote