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Per Westermark
06/17/12 10:37
Read: 538 times

#187754 - Slack? Power available from first tick?
Responding to: Hal Albach's previous message
If the number of steps "lost" had been varying a little bit, I would have assumed that there had been some slack in the system, so if the motor is moving the in one direction, and you then switch direction, a number of steps will be required to take up the slack before the motor finally starts to drive the mechanics in the different direction.

Another thing to consider - do you turn on/off the power supply to the motor? If you do, then your first steps could potentially be sent out without any power being available to drive the coils. And about 95 steps later, the power supply finally activates the power output after having validated the voltages (let's call it an internal "self-test").

List of 11 messages in thread
AUTOCUTTER      Manoj Wakdikar      06/08/12 11:23      
   so am I, reading the above      Erik Malund      06/08/12 12:15      
   Missed steps?      Per Westermark      06/08/12 12:18      
      Autocutter      Manoj Wakdikar      06/11/12 10:41      
         Have you tried lower speeds?      Per Westermark      06/12/12 05:26      
            regarding autocutter      Manoj Wakdikar      06/17/12 06:48      
               Need more info      Hal Albach      06/17/12 09:16      
               Need more info      Hal Albach      06/17/12 09:16      
                  Slack? Power available from first tick?      Per Westermark      06/17/12 10:37      
                     change speed      Maarten Brock      06/17/12 16:29      
   ??? re motor & driver      Hal Albach      06/08/12 14:25      

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