Machine size question

New Home Forum Mostly Printed CNC – MPCNC Advice – MPCNC Machine size question

This topic contains 7 replies, has 3 voices, and was last updated by  Ron Millsap 4 weeks ago.

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  • #61943

    Ron Millsap
    Participant

    My build is 24×24 built to the recommended sizes using the calculator in the instructions. It also has functioning dual end stops.

    Why is it, if I move the x and y out to say 400,400, then zero it out and then try to home it, they gantry will move only to 100,100 then stop. If I home it again, it will then move to the limit switches. It’s like it thinks the machine is only 300×300.

    I looked at the marlin files but I didn’t see anything that was obvious to me.

    (BTW I’m a novice so don’t yell at me please.)

    #61944

    Mike
    Participant

    I think there is a limit setting in the firmware that sets how far it will move before it gives up on a home operation.

    1 user thanked author for this post.
    #61946

    Ryan
    Keymaster

    Mike is correct. I have not changed the default build size in the firmware. It is set to 200mmx 200mm. You can either change it or just home twice.

    Usually I am within 200mm of “home” so I rarely notice it. Easy enough to change.

    1 user thanked author for this post.
    #61947

    Ron Millsap
    Participant

    I think there is a limit setting in the firmware that sets how far it will move before it gives up on a home operation.

    Any idea what it’s called or where it’s at?

    #61948

    Ryan
    Keymaster

    Machine size, configuration.h, little past half way down.

    1 user thanked author for this post.
    #61949

    Ron Millsap
    Participant

    Machine size, configuration.h, little past half way down.

    Ah ! same as for 3D printing and bed leveling. Thank you.

    #61951

    Mike
    Participant

    I usually just manually push the carriage over toward  0 for the X & Y, that way the home function doesn’t have to “drive” so far.

    1 user thanked author for this post.
    #61980

    Ron Millsap
    Participant

    I usually just manually push the carriage over toward 0 for the X & Y, that way the home function doesn’t have to “drive” so far.

    Yeah, but I like doing techy junk.

    1 user thanked author for this post.
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