Posts made by Jddt

The object is in the center of the slicer table, but when I export the g-code and upload and print the object prints of-center by about 80mm. I tried more than one slicer with the same result.

The motors started to work properly with a value of T5

What is the max T values you suggest to be safe?

@jddt Changed to 128 Micro Steps

Thanks for noticing the error in my calculation. I am using external drivers and are not using the M350 command.

Settings I am using now. Can the T setting influence the accuracy of my steps?

M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M569 P5 S1 R1 T2.5:2.5:5:2.5
M569 P6 S1 R1 T2.5:2.5:5:2.5
M569 P7 S0 R1 T2.5:2.5:5:2.5
M569 P8 S0 R1 T2.5:2.5:5:2.5
M584 X5 Y6 Z7 E8

I am using external drivers. All my final drive pulleys are HTD5 20 tooth. I do not get any consistency with the distance the axis move.

See calculations below.

When I completed the steps/mm calibration and I run code, like the homing code, then the distance is completely wrong.

Any advice.
Thanks

Does the M906 command to set the motor current work for external motors as well?

Hi. I am using an extension board to drive external stepper driver. M84 is set to S30 in the config file but the motors stays in idle mode even after some minutes, causing the motors to get hot, but when I execute the M84 command manually the motors is released.

Just can not get the motors to move.

See latest setup below. I am using DM542 Full Digital Stepper Drives, they require a pulse width of 2.5 2.5 us. Drive are set to 1600 micro steps.

; Drives
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M569 P5 R1 T2.5:2.5:5:0
M569 P6 R1 T2.5:2.5:5:0
M569 P7 R1 T2.5:2.5:5:0
M569 P8 R1 T2.5:2.5:5:0
M584 X5 Y6 Z7 E8 ; Apply custom drive mapping
M92 X34.6538 Y31.9881 Z79.97029 E209.21 ; Set steps per mm
M566 X900 Y900 Z12 E120 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000 Y6000 Z180 E1200 ; Set maximum speeds (mm/min)
M201 X500 Y20 Z250 E250 ; Set accelerations (mm/s^2)
M906 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

Please advise

Hi

What do you set the M350 parameters to if you use external drivers with there own micro-stepping?

Thanks

I am using the expansion board with external drivers.

As I am using a different configuration on my Z axis I need to add a brake to hold the Z axis in position if there is no output to the Z motor. Can a IO be configured on the Duet WIFI to be used to control an external brake/realay when there is no voltage send to the Z motor, will not hold the Z axis.