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Thread: bought a used 48" X 48" X 5" used router table

  1. #37
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    Default Re: bought a used 48" X 48" X 5" used router table

    Quote Originally Posted by travis_farmer View Post
    Attachment 364640

    the camper is mostly demo'd, and it is still a rather tight fit around my CNC.

    sadly, today while cleaning up, somehow a staple found it's way onto the breakout board on my test rig (seen on top of the router table). when i powered up the rig later to test the limit switches that came with it (X and Y work, Z is constantly open), i found that the CNC would no longer move. i had not yet connected the limits, and it worked like this previously.

    i had purchased a couple cheaper breakout boards, so all is not lost. the problem is that the backup breakout boards are common VCC, where the one on my test rig was common ground. no real big deal, just that i have to re-wire my drivers.

    note to self, cover the CNC controller when doing demo on the camper.

    ~Travis
    I had aluminum swarf get into one of my older drive boxes and killed it, so I know the feeling.... Looks like you're making good progress otherwise.



  2. #38
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    Default Re: bought a used 48" X 48" X 5" used router table

    Well, i changed out the breakout board, finally. though movement in one direction via LinuxCNC is smooth as silk, but it is jittery in the other. i suspect it is either the timing being sent to the drivers, or the wrong microstepping setting on my drivers (i went with the cheap ones, HY-DIV268N-5A, from china) it was previously smooth with the stepper drivers, using the other breakout board, so i am leaning toward either the drive timing, or my cheap drivers crapped out in the meantime.
    another symptom is the steppers buzz when the drivers are disabled (machine off in LinuxCNC).

    would it be so simple as noise? it all worked fine, before the staple landed on the previous breakout board.

    ~Travis

    rebuilding a 48" X 48" X 5" (work area) router table.
    ReBuild not yet started.


  3. #39
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    Default Re: bought a used 48" X 48" X 5" used router table

    UPDATE:

    if i jog through all Axis with the LinuxCNC jog controls, or my XHC-HB04 pendant, it works smooth in one direction, and noisy in the other. after returning to a different axis, it is very noisy, and the axis just make noise, with no movement. i wonder if it is a software issue, with LinuxCNC, or even with my computer hardware. i will post on the LinuxCNC forum and see if they have an idea.

    ~Travis

    rebuilding a 48" X 48" X 5" (work area) router table.
    ReBuild not yet started.


  4. #40
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    Default Re: bought a used 48" X 48" X 5" used router table

    looks kinda like my cheap Chinese drivers are not supplying enough current for the steppers to move smoothly, so they keep stalling at the slightest hint of resistance. all to save a few bucks...
    I will be buying the Leadshine drivers recommend previously...

    ~Travis

    rebuilding a 48" X 48" X 5" (work area) router table.
    ReBuild not yet started.


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