Quote:
Originally Posted by PhilBot
I'm having reasonable sucess using the Gyro to drive straight (for autonomous mode), but forget about using it after quick turns.
After a fast turn I need to wait for the gyro rate to drop to zero before locking in a new heading. This makes the robot look like it's having a momentary brainer... but then it takes off again, and drives straight.
Phil.
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The KOP gyro has a maximum number of degrees it can turn in one second before it 'overflows' and loses accuracy. To the best of my knowledge, this value is ~85 degrees in one second for the KOP gyro. If you try turning 180 degrees in one second, you will overflow the sensor and drastically lose accuracy. (This is the same as exceeding the +1G acceleration on the accelerometer.)
For use of the gyro with our drive-train on our robot this year, we purchased an additional gyro with a maximum turn-rate of 300 degrees in one second from
Spark Fun Electronics. (Which has tons of great sensors, BTW.) Seeing how our drive-train this year is geared for 9 ft/sec at 85% of the CIM motor free speed, the increased turning-rate of this additional gyro was much appreciated.
