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Grounding to VSS — Parallax Forums

Grounding to VSS

Tyler MeekTyler Meek Posts: 21
edited 2013-02-24 17:14 in BASIC Stamp
Is it safe to ground 12v that is being supplied to a stepper motor via a L293 to VSS on a Board of Education? I have attached the IC with labels

Comments

  • tonyp12tonyp12 Posts: 1,951
    edited 2013-02-24 13:01
    For the control signal to work, the L293's gnd and basic stamp gnd need to be connected (thin connection is better)
    bipolar.gif
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  • shimniokshimniok Posts: 177
    edited 2013-02-24 13:41
    If it helps, you aren't really grounding 12V, you're connecting grounds.

    If you have a circuit that operates at 12V, another at 5V, and one at 3.3V, their ground potential should all be the same: 0V.

    Grounding a 12V supply would make the magic smoke escape. :)
  • Tyler MeekTyler Meek Posts: 21
    edited 2013-02-24 17:14
    OK thanks guys
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