Thnks!

For my 3018 the $3=4 returned OK and Z axis god inverted.

@yippiez It could be the software or firmware, the easiest test is to use a terminal program to connect to the machine and see if it responds correctly to the probe.

You could use Grbl Controller or better still something like CoolTerm to connect with the machine.

If you send: G38.2 Z-10 F20

It will cause the probe to move down 10 mm at 20 mm/min, and when it makes contact you will get a response such as:

[PRB:0.000,0.000,-0.525]

Which means it found the probe at -0.525 mm.

The software would then set the correct Z value based on the thickness of the probe.

awesome

ورزش در خانه

@anzn Yes, T2Laser always works .

@bgagne If you have access to a 3D printer you can make one, I have not seen the mount to purchase.

@bgagne There's a menu for calibration, it just calculates and changes the Grbl parameters like you did manually. If you are loading G-code and not using T2Laser to generate it then any issues would be from Vcarve, but T2Laser can do 2.5D and 3D machining so for most things you don't need other software.

@walter76 If you are using all 3 switches on a single pin (obivously N.O. and in parallel) then config.h would look like this:

#define HOMING_CYCLE_0 (1<<Z_AXIS)
#define HOMING_CYCLE_1 (1<<X_AXIS)
#define HOMING_CYCLE_2 (1<<Y_AXIS)

and in CPU.map you need to set all to be the same pin:

#define LIMIT_DDR DDRB
#define LIMIT_PIN PINB
#define LIMIT_PORT PORTB
#define X_LIMIT_BIT 1
#define Y_LIMIT_BIT 1
#define Z_LIMIT_BIT 1

It will home Z, then X and then Y.. or change however you like and then compile to a Nano.

@advise Yes, it sends G-code but the wiring may not be the same as their offline connector.

@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.