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 Robotics / 5590
  Re: motors
 
Hi, I found that one of my Mindstorms motors is a bit stronger than the other. The robot should go forward, but slightly diverts right. When I exchange the motors and nothing else, it diverts to the left. Does anybody else have similar experiece? (...) (25 years ago, 10-Jul-99, to lugnet.robotics)
 
  Re: motors
 
(...) Unfortunately, almost all of the motors are slightly uneven. Look up "adder/subtracter" or go back through the list to find mechanical solutions which allow your robot to go in a straight line regardless. The archives are at (...) (25 years ago, 12-Jul-99, to lugnet.robotics)
 
  Re: motors
 
(...) Out of the 6 motors that I own none of them rotate at the same speed. (URL) has some mechanical solutions (using an adder/subtractor) for solving this problem. Note that for many types of robots (line followers, etc) it really isn't a problem, (...) (25 years ago, 12-Jul-99, to lugnet.robotics)
 
  Re: motors
 
(...) That's just how mechanical parts are - all parts are slightly different. I've used a differential between the two motors, and then measured the position difference with a rotation sensor. In NQC I just make one of the two motors "float" when (...) (25 years ago, 18-Jul-99, to lugnet.robotics)

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