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Limit Switches not working

Discussion in 'General Electronics' started by Keith Robinson, Dec 15, 2019.

  1. Keith Robinson

    Builder

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    Whenever I hit Home and the Z limit closes, the sequence shuts down. I have to disconnect, physically move the z axis off the limit and reconnect. If I move the X to the limit, it shuts my PC off, assuming it is overloading the USB connection due to a short. I have the ground to the common and the red to the NO pin. On the blackbox, I have them in the ground and power pins for each axis. The blackbox is not seeing the limits. I dont know where I am screwing it up. Please help.
     
  2. Gary Caruso

    Gary Caruso OpenBuilds Team
    Staff Member Moderator Builder

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    Hi Keith, make sure you are wired signal to ground, not ground to 5v.
    Cheers
    Gary

    upload_2019-12-15_21-2-3.png
     
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  3. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Project Maker Builder Resident Builder

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    GND and SIG please!
    V+ (Power) is for ACTIVE endstops that need power! Like Xtension limits, or Inductive Sensors. Always follow docs.openbuilds.com/blackbox for any wiring!
     
  4. Ron Smith

    Ron Smith New
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    Did you get your problem fixed?
     
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  5. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Did you double check your wiring against docs.openbuilds.com?
     

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