Gyro problem, please help!

[Gigakaiser]

Gyros tend to drift, but not by large amounts. Make sure your robot isn't moving when you power on to minimize the drift. We've found that the normal gyro drift doesn't affect us much during autonomous, and during teleop we always use offsets rather than absolute angles when giving gyro-based commands. (ie. use the current gyro angle + some offset rather than using an absolute angle)

[zatch bell stev]

What do you mean by offset ?

[Gigakaiser]

Originally Posted by zatch bell stev

What do you mean by offset ?

For example, if you know the robot is straight and you want to turn 30 degrees (but your gyro drift is adding up), you could turn to gyro.getAngle() + 30.0. Another solution, as MagiChau wrote, is to reset the gyro if you know where your robot is pointed.

[zatch bell stev]

Originally Posted by Gigakaiser

For example, if you know the robot is straight and want to turn 30 degrees (but your gyro drift is adding up), you could turn to gyro.getAngle() + 30.0. Another solution, as MagiChau wrote, is to reset the gyro if you know where your robot is pointed.

I already written a program for that but never get to test it because our robot is packed up and only thing i could access from our lab is bunch of sensors and a crio. does is work properly when you use it like that ?

[zatch bell stev]

Originally Posted by Gigakaiser

For example, if you know the robot is straight and you want to turn 30 degrees (but your gyro drift is adding up), you could turn to gyro.getAngle() + 30.0. Another solution, as MagiChau wrote, is to reset the gyro if you know where your robot is pointed.

public void operatorControl() {

double lastAngle = 0;
double newAngle =0;
double realAngle = 0;
gyro.reset();
while (isEnabled() && isOperatorControl()) {
double move = y.getY();
motor.set(move/5);

if (move > 0.01 || move < -0.01) {
newAngle = gyro.getAngle();
lastAngle = realAngle;
} else {
realAngle = newAngle + lastAngle;

gyro.reset();

}

System.out.println(realAngle);
System.out.println(move);
Timer.delay(0.05);

}
}
do you think this will work ?

[Tom Line]

Zach, 1 degree every 1-3 minutes is actually good performance from the KOP gyro. As far as I know, you're not going to be able to improve on it substantially.

Perhaps you can tell us the application. I can't think of many applications for a gyro that would be messed up by 1 degree over the course of the match.