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Limit Switches

Discussion in 'CNC Mills/Routers' started by canonman, Mar 15, 2020.

  1. canonman

    canonman New
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    how many Limit Switches do I need, is 3 enough 1 on each X Y and Z. ?
    Also do #i need a certain type of wire
    Sorry but I'm not great on electronics
    Thanks
     
  2. Rob Taylor

    Rob Taylor Master
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    One each for homing (so the machine knows where it is). Two each for limits (so the machine doesn't crash into the ends).

    You can do homing + "soft limits", where you tell grbl how big the machine travels are, and it refuses to run g-code that goes outside of that volume. Works pretty well, I'm sure many people run that way.

    Technically you can of course run without homing, limits, and/or soft limits, but you have to be very careful what you tell the machine to do and how you turn it on and off.

    Wires should be shielded, ferrited and ideally capacitor-filtered.
     
    Peter Van Der Walt likes this.
  3. canonman

    canonman New
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    Brill
    Thanks again
     
  4. Peter Van Der Walt

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

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  5. canonman

    canonman New
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    Thank you for your time, great members, get team
    Take care people
     
    MaryD and Peter Van Der Walt like this.

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