Mechanum Wheel Sizes

[efoote868]

Originally Posted by nxtsoccer

As I said, the team is very new to this stuff... how would a gyroscope help with a mecanum wheel drive?

Using a gyro allows you to do something called "field centric drive". Basically, if the robot is in front of you and you push your joystick forward, the robot moves away from you regardless of how it is spun.
In effect, the robot has no front.

This is probably the most useful sensor to use for mecanum wheels. I'd strongly recommend it ahead of encoders and accelerometers.

Also, as far as ramps and inclines go, mecanum wheels perform just fine. In 2006, our robot could climb the diamond plate ramp and get on the platform.
In 2010, our robot could climb over the carpeted bump.
In 2012, our robot could climb on the bridge.


Right now is the time to experiment with drive trains. If you have the time and the money, try building a 6 wheel drive and build a mecanum drive. Learn how to use gyros, accelerometers, and optical encoders. Figure out how to do a good job building each, and experience the strengths and weaknesses of both.

Then, when it comes time to pick a drive train, you won't be second guessing yourself.