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Speed of Robot

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speed = Axle_RPM * (Whell_Diameter * pi)

if your axle turns at 100RPM and wheel diameter is 2 inches

speed = 100 * 2 * pi
speed = 200 * 3.14
speed = 628 incher / minute

In ten seconds the robot would travel (628/60) * 10 or about 104 inches if there is no wheel slip.

Is that the sort of thing you wanted ?
 
3v0 said:
Is that the sort of thing you wanted ?


(No i think he is speaking about feedback from the motor to the micro controller to detect the robot's speed, and regulate it.. i think.)

You need what is called a shaft encoder, to count the revolutions of the motor, feeding it back to the micro controller to increase/decrease the power delivered to the motor, to acheive the required speed.

This article may help:
**broken link removed**
 
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