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SPEED CONTROL OF STEPPER MOTOR

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mushu_mist

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Hi Every Body,

I am trying to controll the Speed of the Stepper Motor Connected to PIC16F84A.I Have used 2 Switches. SW1 is used to select the Rotation Direction & SW2 is used to START/STOP the motor. As I am very much new to microcontroller I dont know how to Control the speed of the motor. I have attached my Code & ISIS design with this post. I have seen some sort of similat project on

http://www.massmind.org/images/www/hobby_elec/e_step.htm

Like this one I want to add A variable resistor with the PIC by which I can Controll the Speed of the Motor.


Interrupt is used here. But I dont get it. Please any one Help me to do it. Any help will be appriciated.
 

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