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???
01/26/05 15:59
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 		 #85827 - You got it.
Responding to: ???'s previous message
Wong said:

That means a port doesn't enough for driving the motor?


You got it. For driving stepper you will need to use some sort of buffering circuit that can source and sink current enough for driving your stepper.

If you are not planning to operate the motor at high RPM you can use a non-chopper drive say built with a PUSH PULL driver such as L293D.

For high RPM stepper operations you need to use a chopper drive check out the datasheets of L297 and L298D for more information on chopper drive application circuits.


Regards,
Prahlad

List of 42 messages in thread
TopicAuthorDate
Question about Step motor, thanks            01/01/70 00:00      
   Get your thinking hat on            01/01/70 00:00      
      Detail            01/01/70 00:00      
         Are we nearly there yet?            01/01/70 00:00      
            look here also            01/01/70 00:00      
               checked..            01/01/70 00:00      
                  You got it.            01/01/70 00:00      
                     I have got it.            01/01/70 00:00      
                        I have studied some example..            01/01/70 00:00      
                           Why?            01/01/70 00:00      
                              Because...my supervisor            01/01/70 00:00      
                                 How about this design?            01/01/70 00:00      
                                    Maybe this also will help            01/01/70 00:00      
                                       This website is really useful            01/01/70 00:00      
                                    I doubt if it will fly            01/01/70 00:00      
                                       Thanks            01/01/70 00:00      
                                          do not forget            01/01/70 00:00      
                                             If i use an IC now            01/01/70 00:00      
                                                Saa 1027            01/01/70 00:00      
                                                   ULN2003?            01/01/70 00:00      
                                                      it must be your teacher            01/01/70 00:00      
                                                         No, is my supervisor            01/01/70 00:00      
                                                            unipolar/bipolar.            01/01/70 00:00      
                                                               4            01/01/70 00:00      
                                                                  stepper motors            01/01/70 00:00      
                                                                     not clear            01/01/70 00:00      
                                                                        4 lead motor            01/01/70 00:00      
                                                                           but            01/01/70 00:00      
                                                                              8 lead steppers            01/01/70 00:00      
                                                                                 DC drives            01/01/70 00:00      
                                                                              Unipolar / Bipolar            01/01/70 00:00      
   This might help            01/01/70 00:00      
   I had the same problem            01/01/70 00:00      
      Toasters            01/01/70 00:00      
         Toasters            01/01/70 00:00      
   PWM to drive the stepper motor            01/01/70 00:00      
      that is wrong            01/01/70 00:00      
         PWM Steppers ?            01/01/70 00:00      
            it's tough to google on 297            01/01/70 00:00      
               Brought to you by the letter L            01/01/70 00:00      
                  Try to check out this site            01/01/70 00:00      
   It is Impossible            01/01/70 00:00      

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