Subject:
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Getting the L297 into wave drive mode
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 17 Mar 2000 00:28:30 GMT
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Original-From:
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Sean Verret <verret@ee.IHATESPAMualberta.ca>
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Viewed:
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1924 times
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Hi I'm using the L297/L298 chip configuration to run 4-phase unipolar
stepper motors. Currently I'm driving them in half-step mode but I'm not
getting enough torque.. :( Has anyone successfully gotten the L297 chip
into wave drive mode? I believe I have a way to do it (which I'll explain
below) but I was wondering if anyone had done it an easier way?
The way i propose:
since the translator of the 297 needs to be in an even state i will reset
the translator putting it in state 1 and setting the half/full_bar mode
low, then when the clock changes the state of the translator to state 2 I
want to set the half/full_bar mode high. Now my question is do I want to
send the 4 signals (A,B,C and D) into my microcontroller and determine
what mode the translator is in and then have an output from my
microcontroller set the half/full_bar mode accordingly? or should I just
use a and/or/xor/nor/etc configuration to set my half/full_bar signal
accordingly?
Thanks
Sean Verret
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Message is in Reply To:
 | | Re: Non-polaroid Sonar
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| Hi Everyone! If anyone gets the interface to work, I'd love to post it on my site along with the appropriate references and credits. It would be neat if the sensor works with the HB! Good luck! (...) ______ ______ ---...--- |_ _| |_ _| Kam Leang | (...) (25 years ago, 16-Mar-00, to lugnet.robotics.handyboard)
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