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Unread 20-01-2011, 16:29
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Alan Anderson Alan Anderson is offline
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Re: Mecanum - Cartesian problems

Quote:
Originally Posted by ThisIsSparta View Post
...when we tried to put a servo on another axes, it didnt even register...
A servo requires power in order to work. Until you put a jumper on the "servo power" pins by the PWM output connector, the Digital Sidecar will not supply that power.

As for your axis confusion, you should probably start at the beginning. Make sure your 4 Motor Drive is opened with all the right PWM signals going to each corner of the robot. Make sure your motor controllers are actually wired with those PWM signals. Put the robot up on blocks and verify that each motor goes in the direction you expect when you drive forward and reverse. If some don't, use the "invert" options on the Drive Open appropriately to make them do what they should. Double-check that you have the wheels mounted correctly (the rollers should make a diamond pattern on the carpet, not an X).

Then try it again. If it doesn't work as you expect, don't just start changing things without thinking them through. Post your results here and let someone see if there's an obvious answer to your problem.
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