Z-axis probs

[Dr_dre]

lo all,

ive got this weird problem i cant figure out.
the homing is working using the hall effect max. endstops.

after homing i want to use the z axes.
But whenever i want to move z axes the x and y motors are moving.

i cant troubleshoot z axes like this 🙂

im using arduino mega 2560 with ramp 1.4
compiled with 33 as electronics board.

Any help would be appreciated.

Cheers,
Dre

[Quentin Harley]

Hi Dre,

Did homing behave exactly the same as in the youtube video? If not, you may not be on the correct firmware… You need the armlevel branch of my for of Marlin to make it go.

If the firmware is correct, remember that the head is not at the zero position to start off with. Any Z movement with the arms in home position will cause the arms to move to the X0 Y0 position as well. This is because the arm movements are bound to the bed area by software.

To eliminate this, move to Center bed position first with: G1 X100 Y100 F10000

This assumes that you ran though the arm level calibration first of course.

Hope it helps,
Q

[Dr_dre]

it was a malfunctioning a4988 🙁 the same for the extruder.

Ive ordered 2 more 8825 for z and extruder. Do i need to change firmware for this ?
they both have 1.8 degrees stepper motors.

Cheers,
Dre

[Quentin Harley]

You won’t need to change anything in the firmware. You only need to double the steps per unit. (M92)

I run a couple of my machines on 8825 exclusively as well. They are better suited to the Morgan, even if it is a bit more expensive.

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