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???
01/26/05 15:22
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 		 #85818 - Are we nearly there yet?
Responding to: ???'s previous message
I said:
Think about it:
  • How much current can a port pin sink?
  • How much current can a port pin source?
  • How much current does your motor need?

    • Wong Chi Fai said:
    Current consumption for driving the motor is 0.19A (at 5.0V)

    OK, so the motor needs 190mA - now consider the other two questions:
  • How much current can a port pin sink?
  • How much current can a port pin source?



    • 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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