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Ox with Gecko Controller and CNC Linux

Discussion in 'CNC Mills/Routers' started by Bmoz, Jun 7, 2014.

  1. Bmoz

    Bmoz New
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    Bmoz published a new build:

    Read more about this build...
     
  2. Tweakie

    Tweakie OpenBuilds Team
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    Excellent work @Bmoz :thumbsup:

    Thank you for sharing the information. It is nice to know that LinuxCNC is so easy to get up and running from a standing start and it looks like you are now well on your way towards a fully functional machine. ;)

    Tweakie.
     
    Bmoz, KerryH and mybuild14 like this.
  3. KerryH

    KerryH New
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    Looking forward to seeing this build progress!
     
    Bmoz likes this.
  4. Bmoz

    Bmoz New
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    Thanks guys1
     
  5. Seul Kee

    Seul Kee New
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    Since I also want to use LinuxCNC for my build, your info is very helpful and timely.
    If possible, please provide some more details regarding the motor control.

    I would like to know how you would connect the Gecko driver with the Synthetos 3 axis
    driver board you mentioned in your BOM.

    I am thinking about using Beaglebone Black as my Linux computer.

    Thanking you in advance!
     
  6. Bmoz

    Bmoz New
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    If you use the gecko g540 no other driver is necessary. I scrapped that board and forgot to remove it from the BOM.

    What are you building?
     
  7. Bmoz

    Bmoz New
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    Tomorrow I will try to make a video of the software setup
     
  8. Seul Kee

    Seul Kee New
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    Thanks for your clarification. I thought it was rather confusing that you are using G540
    and Synthetos.

    I am waiting for the parts for building an OX-like CNC router which can handle 4' x 4' panels.
    That is why I am very interested in your build.
     
  9. Jason Broadwell

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    I built an original OX years ago, had trouble with the settings but managed to get it close enough to cut signs and things that didn't need precision.. I worked out 200 steps per rev, G540 driver microstepping = 10, openbuilds 20T pulleys and plugged in 20:1 in the pulley teeth setting, gt2 belt, this gives me 50 for the mm/rev right? unless I put in .5 I don't even come close to the 15mm test (travel length) I know I'm not smart enough for this kind of thing but that has never stopped me before :) I would really appreciate any insight, I know there is tons of info out there but I always come back to these settings.
    One revolution of a 1.8┬░ stepper is 200 steps * 10 = 2000 steps/revolution.
    For GT2 (2mm) belt and a 20 tooth pulley 1 revolution = 2 * 20 = 40 mm/revolution.

    2000 steps/revolution * 1 revolution/40 mm = 50 steps/mm. If this is correct any idea why only a few mm of travel in the axis test window set for 15mm? I saw that you used a G540 and linuxcnc and thought it was worth a shot.
     

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