@stijnpeeters where do you need to change the settings in windows? I am having the exact issue you describe.

@Miquelin Those instructions only work if the Nano has a working boot loader. If it is corrupt or missing you won't be able to upoad via USB, it requires an AVR programmer (or an Arduino devices configured as such).

@hami Correct. 1/16th microstepping is going to be smoothest but also the lowest torque. Full mode would have maximum torque but is very rough stepping. Resolution and feed rates are also considerations but this also varies depending on the drive mechanism (e.g. ballscrews improve performance but cost more and may need higher torque).

@maoxiankou5 The standard driver (L4988) is for bipolar motors, what you have sounds like a unipolar motor.

https://learn.adafruit.com/all-about-stepper-motors/types-of-steppers

You can use a unipolar motors as a bipolar, just use the 2 coils (outside taps), this configuration provides increased torque but since your axis has such a fine leadscrew that is likely not required so they went with the simpler unipolar configuration.

I would recommend using the standard drivers and bipolar connection.

@alkassab This thread is in the EleksMill section and discussion about Eleksmaker A3 Pro laser so I'm not really sure what machine you have. Elekscam is obsolete software and only works with the old Grbl 0.9, but if you have a servo then Grbl 0.9 would be correct as it can easily switch from servo to laser.

@maoxiankou5 You overloaded the coil with twice it's current limit and are surprised that it failed?

If the stepper current driver is correctly set for the motor there would not be any problem. The standard drivers are only rated for 1A without heatsink and fan so you probably damaged those as well.

@ElleRt55 That looks normal, it's an anti-backlash nut. The split halves are kept apart with the spring, you are putting more force that the spring so overloading the axis.

@hami 0.6V should not cause any overheating, even on a long job but it's higher than typical which would indicate higher mechanical friction.

@michael2019 Yes. You can set a Z-Safe height.

It will retract to the Z-Safe plane before moving from one path to another, you can use this to avoid clamps etc.

@marcoo said in Co2:

Posso usare t2laser per laser ço2 cinese 40w ?

I'm not sure what this has to do with EleksMill, but yes it's possible.

T2Laser outputs G-code (Grbl based is recommended) so any controller that supports this standard will work. The Chinese K40 machines use proprietary cards but you can swap them with an Eleks or other controller that supports G-code.

@icejoker The power switch?

No, The mechanics are smooth. I have already found a replacement, and that works fine. Thanks.

@swarfmaker T2Laser will generate 2.5D or 3D G-code and run the machine (no other software required).

You can use any image, as a quick example I loaded a jpg and inverted to make it a positive.

Note: The 3D simulation was done using ncviewer (the viewer in T2Laser is 2.5D only)

@bug You need to use X, Y1 and Z. Y2 is a reversed output of Y used for machines with dual Y motors.

@Zax Thank, I will try and out and let you know if I get it working.

@amirazimi.y The absolute accuracy of the machine is 2.5um but due to the use of a pinion gear and belt on the X-axis it's positional accuracy is significantly lower, around +/-12.5um or 25um total. This will depend on bit loading and other factors, so for PCB drilling (no side loads) you could well achieve 5um accuracy.

In any case those 50um spaced holes would have a 10% tolerance (best case) which should be acceptable.