Yoram,
I wouldn't advise one 3977 output to two motors. A biploar driver chip supplies the motor voltage unlike a uniploar which most of the time just switchs the ground side. You really ought to use on driver per motor. You can parallel the inputs. i.e. one step signal from the pc wired to two step inputs on two driver boards.
Phil
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Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
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