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  1. #621
    Quote Originally Posted by f750 View Post
    I have built a machine following this and the Joe Harris build. I am using the same BOB and having read all the way though my question is, I am using a dual ball screws and could you confirm the wiring on the inputs for the limit switches.

    Cheers Tony
    Click image for larger version. 

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    I'm going to assume you want to use the limit switches as home as well.

    What software are you using on the computer?

    Do you want to dual home the gantry?

    How many home switches do you have?

    On that 5 axis BOB I have P12, P13 & P15 you would normally use for X, Y & Z limits in linuxcnc or Mach 3 you can also assign these pins in software so what matters is you're wiring matches how you assigned the pins.

    If you want dual homing you can share the input as long as it's not the same axis. Needs to be set in software. You can also use the p11 tool setting as another axis.

    Good good you were following Joe's Build too lol, I'm kind of the Benny Hill of mycncuk lol but with worse music and uglier women ;)
    Last edited by Desertboy; 18-11-2018 at 08:17 PM.
    http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm

    If you didn't buy it from China the company you bought it from did ;)

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  3. #622
    f750's Avatar
    Lives in uherne bay, United Kingdom. Current Activity: Viewing Has been a member for 8-9 years. Has a total post count of 6. Received thanks 3 times, giving thanks to others 0 times.
    Cheers for the reply,I am using Mach3 as my software and have the machine working on it. I am at the stage of fitting the limit switches, I want to do dual homing on the gantry and keep the tool setting function.

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  5. #623
    Quote Originally Posted by f750 View Post
    Cheers for the reply,I am using Mach3 as my software and have the machine working on it. I am at the stage of fitting the limit switches, I want to do dual homing on the gantry and keep the tool setting function.
    you have 3 inputs pins and 4 inputs X, Y1, Y2, Z

    Something like
    P12 X
    P13 Y1
    P15 Z & Y2 set as shared. Since you use Z the least seems the simplest solution. Setting the pins in Mach 3 should be easy but I don't use it so you'll have to ask others.

    There's a good forum for Mach 3 as well for setting up.
    Last edited by Desertboy; 18-11-2018 at 08:41 PM.
    http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm

    If you didn't buy it from China the company you bought it from did ;)

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  7. #624
    Click image for larger version. 

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    Bought some kit, also got a grinder and an impact driver coming.

    https://www.powertoolmate.co.uk/


    Got lucky they sent me the case for drill and impact driver (I only bought the drill) and then I bought the impact driver without case so it worked out.

    Over £200 cheaper than buying from screwfix for the drill, batteries, saw, impact driver & grinder including the VAT.
    Last edited by Desertboy; 24-11-2018 at 12:36 PM.
    http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm

    If you didn't buy it from China the company you bought it from did ;)

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