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Unread 29-02-2012, 19:49
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Re: Can't figuring out what's wrong. Please help.

Quote:
Originally Posted by Taylor View Post
Does the arm start (relatively) vertical, lower to horizontal, then lift back to vertical? Perhaps the motor isn't strong enough to lift the arm back up.
To elaborate,

Have you counterbalanced your arm?

Don't forget that when pushing something down, gravity works with the motor, but against you when pulling it back up. The same applies to any mechanism that works with gravity one way, and fights it the other way. Sort of like how going down stairs is easier than going up

If you haven't counterbalanced your arm, then that would produce exactly the type of behavior you describe.
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