Weird jumps and erratic circles

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  • September 10, 2013 at 9:00 am #4498
    Makerboost
    Member

    Hi,

    I’ve got a TinyG v8, firmware 0.95, build 380.02 with latest tgFX binaries. (master build?)

    Today I noticed erratic behavior while routing some HDPE.
    The spindle made a tiny arc instead of a big one and traversed to the arc end point through the material.

    I can reproduce it almost every time, although in the beginning it was a bit erratic. This happens even though I have inhibited all my axis.
    I’ve checked my stepper motor shielded cable and grounding, and it seems to be fine.
    I’ve read a few posts about similar problems on this forum, and I’ve tried to mess with the serial connection, heat sinks, ferrite beads and so on.

    Could anyone try my G-code and see if they get the same problem?

    Screenshot

    G-Code

    • This topic was modified 11 years ago by Makerboost.
    September 10, 2013 at 10:50 am #4500
    Makerboost
    Member

    I noticed I was using the 32bit version of tgFX on my Windows 7 x64 machine. I have installed the latest 64bit version, so I tried that instead.

    The UI is very laggy, but the program works.

    I also tried adjusting the pots up a little on every axis to see if that made a difference.

    Will let you know how it goes.

    September 10, 2013 at 11:27 am #4501
    Makerboost
    Member

    No change. After running for a couple of minutes, it buried itself into the material with a sudden traverse. Seems like it just skipped a bunch of G-code steps.

    Tried a new fresh computer, fresh install of tgFX, newest FTDI drivers with the XON-XOFF bugfix, and it’s even worse.

    Check this screenshot out.

    September 10, 2013 at 12:36 pm #4502
    Makerboost
    Member

    Disconnected all cables, soldered the limit grounds to common wire that I connected to the TinyG. Put ferrite beads on all 5v cables.

    Found stepper motor cable that wasn’t inserted correctly into screw terminal. It was underneath instead of inside the fixture. Fixed.

    Connected and tried the g-code file once more, but it failed at the same place as before. Around line 40-45.

    September 10, 2013 at 2:15 pm #4505
    Makerboost
    Member

    Flashed the new 380.05 (0.96) firmware, can’t connect with tgFX any longer. Stuck at “Getting TinyG Firmware Build Version….”

    Connected with CoolTerm, set up all correct values, ran the g-code file without any problems.
    Going to run it 10 more times before I trust it.

    September 10, 2013 at 4:54 pm #4507
    Makerboost
    Member

    Ran it 3 times, all without problems.
    4th time I cut my piece, came out fine.

    I still have to run more tests, but it seems like the firmware flashing helped. Too bad about tgFX, I really liked that UI.

    September 11, 2013 at 8:05 pm #4515
    Riley
    Keymaster

    This is fixed in the windows 64bit “experimental” directory. Its a “one off buffer issue”

    I have NOT created new builds for win32 or osx. I will very soon.

    Riley

    September 21, 2013 at 9:46 am #4561
    Makerboost
    Member

    Just wanted to let you know that I’ve been running fine for a while with Coolterm, but I can’t try it out in tgFX until it recognizes the new firmware version.

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