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  1. 14-10-2013 #1
    irving2008's Avatar
    Lives in NW London, gateway to A1 & M1, United Kingdom.
    irving2008
    Last Activity: 17-03-2017 Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 2,849. Received thanks 179 times, giving thanks to others 5 times. Referred 6 members to the community.
    You should connect the scope ground to PIC 0v and then probe the PIC output and/or the driver input PUL- assuming PUL+ is connected to +5v
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  2. 15-10-2013 #2
    EddyCurrent's Avatar
    Lives in West Cumbria, United Kingdom.
    EddyCurrent
    Last Activity: 2 Weeks Ago Forum Superstar, has done so much to help others, they deserve a medal. Has a total post count of 2,203. Received thanks 278 times, giving thanks to others 110 times. Is a beta tester for Machinists Network features.
    Maybe it's to do with parasitic capacitance at the PIC output so perhaps some kind of buffer stage would help ?
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