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Thread: Parallel Port Problem

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  1. 03-10-2009, 08:25 AM #1
    willing
    willing is offline Registered
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    Aug 2006
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    Parallel Port Problem

    I am using a simple, cheap motor controller-driver and I can't get the Z axis working. When checking the input voltages from the LPT Port, I am getting a negative voltage when trying to step. I have Z axis set on pins 6 & 7. Do not have this problem with the X & Y axis, they both work fine. I have tried this on 2 different PC's and get the same result on both of them. I don't have all the grounds(18-25) on my breadboard, but do have it on my controller board. Is this a ground issue, or something else? Any help would greatly be appreciated.
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  2. 03-21-2009, 02:40 AM #2
    oletimer
    oletimer is offline Registered
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    Mar 2009
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    Could be a compatability issue, try going into properties and changing to windows 2000,, I have found this to work in the past...
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