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Type: Posts; User: hfjbuis

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  1. Re: CNC 3018 Pro Problem With Z-Probe/Heightmap

    I am not familiar using candle but if candle doesn't report the error, you could connect a serial terminal program like the build-in one from Arduino and run the probe command by hand. That way you...
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    Re: 3040 Out of Storage Won't Budge

    If the stepper is locked during moves and unlocked during idle, the enable pin is connected the right way. Check this first.

    the grbl settings must match your driver and cnc capabilitys.

    Note...
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    Re: Arduino Uno - CNC Shield v3 - Ramps etc

    You need 2 axis and each axis connected to 2 drivers.

    Than you could do with a:

    a 2 (or more) axis board and 4 external drivers.
    a board capable of 2 pairs of ganged drivers. @philba can...
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    Re: Arduino Uno - CNC Shield v3 - Ramps etc

    Are you sure you need 4 axis, isn't 1 axis moved by 2 steppers. If that is the case, you need 3 axis and 1 axis controlling 2 drivers (1 motor ganged).


    Using step stick drivers and a...
  5. Re: CNC printer moving twice the distance of design

    You could start using UGS or another gcode sender to move a "known distance" and then measure the actual distance moved. If the distance moved is not correct, your steps/mm setting in the grbl...
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    Re: Gcode or Javascript center probe script

    You could probe in 2 directions and use the mean value of the to probe positions to find the center.
    Grbl can only execute the probe movement and report the position found.

    This task is normally...
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    Re: Backlash inconsistent

    It is possible, the deceleration causes the backlash to "disappear" at higher feed rates. This is possible if the drag/friction in one direction is higher than in the opposite direction.
    You could...
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    Re: Backlash inconsistent

    I suspect:

    if you measure at 10 mm per minute and at 3000 mm/min, the difference will be larger.
    if you measure in the mid of the router table or at the side, the difference is larger in the...
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    Re: Backlash inconsistent

    I assume you measured the backlash by measuring dimensions of the part. If you run at different feed rates, the cutting forces are different. This results in different flex (machine, router bit,...
  10. Re: Bad Limit Switches causing random behaviour

    Your limit switch must clear when the actuator doesn't touch it any more. If not, it may be influenced by magnetic fields like a stepper motor moving towards the switch. Increase the pull off until...
  11. Re: GRBL alarm 8 after the first hit on X limit switch

    This means that after retracting, the limit switch is still active.
    Increase the retract distance (pull off distance) ($27 on grbl)
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    Re: Question about GRBL Arduino CNC systems.

    You could use standard grbl (or any other type) for the cnc controller and a second controller as front end. You can protect your software for this second controller the way you like. Doing this, you...
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    Re: Setting Micro Stepping in UGS

    UGS doesn't need to know this information because it gets the actual positions in mm from the grbl controller.
    All configuration is done in the grbl controller. Set the "X-axis travel resolution in...
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    Re: GRBL 1.1 Stepper motor won't move

    These low values are to prevent stalling the stepper, just to make sure the stepper will turn when receiving a pulse. If you set the scope trigger to normal, the scope will catch these pulses. If...
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    Re: GRBL 1.1 Stepper motor won't move

    The link I provided is the grbl-mega site. On the page there is a green "Clone" button you can use to download a zip file containing the latest stable release.


    Depending on your wiring, it could...
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    I am not behind PC at the moment! Search for...

    I am not behind PC at the moment!
    Search for grbl mega on GitHub.

    I will look at the link later this evening
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    Re: GRBL 1.1 Stepper motor won't move

    The good thing, it shows grbl is running and doesn't report any errors.

    If you flashed the last grbl-mega version, it should show 1.1g and i know you did set it up the right way.


    that should...
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    Re: GRBL 1.1 Stepper motor won't move

    This is strange but it helps!

    The Arduino IDE is quit tricky if you have multiple versions of the same software. You have to remove all the previous grbl software (not just overwrite), install...
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    Re: GRBL 1.1 Stepper motor won't move

    delete the grbl directory in your libraries directory that is located in your sketch directory
    place the grbl mega directory in your libraries directory
    upload the sketch again.

    if that doesn't...
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    Re: GRBL 1.1 Stepper motor won't move

    Inverting the step pulse $2 and the step direction $3 has no influence on "not stepping". If your drivers require inverted logic, changing the enable pin $4 from 0 to 1, could solve the problem. If...
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    Re: GRBL 1.1 Stepper motor won't move

    My guess is you are using a shield (RAMPS) that has a different pin mapping. If so, you need to change some compiler options in file config.h and flash the mega using this modified version.

    In...
  22. Re: New build - X & Y axes intermittently not moving

    I use TB6600 drivers on 2 lathes. I run them not higher than 24 volts to avoid losing steps due to electric resonance. All other options for better drivers like leadshine, will cost quit a lot more....
  23. Re: New build - X & Y axes intermittently not moving

    If your are using DRV8825 stepstic drivers, Your stepper current, probably 3A or more, is way to large. The driver gets to warm and turns off to prevent damage.

    You could use external drivers (my...
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    Re: grbl 1.1 For A 3018 CNC Router

    You can find the original grbl 1.1G version here https://github.com/gnea/grbl , it is for an Arduino Uno based controller. If you have an Arduino Mega controller you will find the original grbl 1.1G...
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    Re: GRBL 1.1 Stepper motor won't move

    Nothing is so difficult to solve than a hardware problem if you don't have the tools to diagnose and some spare parts to exchange.
    I hope you get a new properly working board.
  26. Re: No LIM status. Unable to troubleshoot limit switches

    Could be, a RAMPS shield doesn't support hardware limits due to the pin mapping RAMPS choozed. I have a (2) Keyes Uno cnc shield where the step and enable pins are swapped, etc.
    If you have...
  27. Re: No LIM status. Unable to troubleshoot limit switches

    What CNC shield are you using?
  28. Re: No LIM status. Unable to troubleshoot limit switches

    To enable the limit switches do the following:



    Enable hardware limits (set $21 to 1)
    For normally open sensors (NO) set $5 to 0
    For normally closed sensors (NC) set $5 to 1 and connect...
  29. Re: Temperature Control - For High Precision Milling (Protective Housing)

    Like already said, use a lot of coolant. Cooling is more difficult and more expensive than warming up. Consider keeping the coolant at a relative high temperature like 35° C. Adjust the milling...
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    Re: GRBL 1.1 Stepper motor won't move

    Have you checked the wiring (cable) between the stepper and the driver, are the coils connected OK?

    1A and 1B should be connected to one coil and 2A and 2B should be connected to the other coil....
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