#define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 400, 94.69 }

I made myself a 3d printer, the printer print the first layer good, but then goes to far up like 1 cm or so.
I use a M8 rod for the printer. Below I have a piece of the program from the printer.
Please help me. Thanks in advance.


#define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 400, 94.69 }
#define DEFAULT_MAX_ACCELERATION { 2000, 2000, 100, 10000 }

#define DEFAULT_ACCELERATION 2000 // X, Y, Z and E acceleration for printing moves
#define DEFAULT_RETRACT_ACCELERATION 3000 // E acceleration for retracts
#define DEFAULT_TRAVEL_ACCELERATION 2000 // X, Y, Z acceleration for travel (non printing) moves


#define DEFAULT_XJERK 17.0
#define DEFAULT_YJERK 17.0
#define DEFAULT_ZJERK 0.4
#define DEFAULT_EJERK 1.0

It seems, you don't have microstepping jumpers under the Z-axis driver.

I would think that you have the wrong Z-Axis leadscrew numbers.

Take a picture of the Lead screw, and post, Unless you know what the lead is.
The lead is the distance traveled with one rotation.
A T8-8 lead screw will travel 8mm
A T8-4 lead screw will travel 4mm
a T8-2 lead screw will travel 2mm

// Typical stepper motors have 200 steps per full step/rev = 1.8°/step, so 1/16 microstepping = STEPS_PER_REVOLUTION_E = 3200
// X-Y Axis 3200, / 20 tooth, / 2mm pitch = 200*16 / 20 / 2 = 80 :: (STEPS_PER_REVOLUTION_X / IDLER_TEETH_X / BELT_PITCH_X)
// Z Axis 3200, / 1.25mm pitch leadscrew = 200*16 /1.25 = 2560 :: (STEPS_PER_REVOLUTION_Z / PITCH_OF_Z_ROD)
// Z Axis 3200, / 2mm pitch leadscrew = 200*16 /2 = 1600 :: (STEPS_PER_REVOLUTION_Z / PITCH_OF_Z_ROD)
// Z Axis 3200, / 4mm pitch leadscrew = 200*16 /4 = 800 :: (STEPS_PER_REVOLUTION_Z / PITCH_OF_Z_ROD)
// Z Axis 3200, / 8mm pitch leadscrew = 200*16 /8 = 400 :: (STEPS_PER_REVOLUTION_Z / PITCH_OF_Z_ROD)
// E-Axia 3200, / (11mm Gear OD * pi) :: (STEPS_PER_REVOLUTION_E * EXTRUDER_GEAR_RATIO / (PINCH_WHEEL_DIAMETER * PI))

Edited 1 time(s). Last edit at 12/28/2017 08:36AM by Roberts_Clif.

Thank you for your responds.
It is a T8-8 lead screw. I add a picture of the lead screw just to be sure.
What do I need to change in the software?

Thanks in advance.

What kind of controller are you using, If you are using a ramps 1.4 have you installed the jumpers.

Yes I have installed the jumpers on the ramp 1.4.

What slicer are you using.
Would you post your configuration.h file.
What are you using for stepper motors.

I use slice 3 and simplify 3D both does the same thing.
I put the whole program in the attachments. I hope you find the problem.
The stepper motor that I am using is 17HS4401

Thanks in advance, you are the best.

Sorry to say but you only attached Marlin.ino

Ooops I am sorry.
I copy and past it in this file.

I thought that this was correct

#define Z_MIN_PROBE_ENDSTOP_INVERTING false // set to same logic as "Z_MIN_ENDSTOP_INVERTING".

[github.com]

Never changed this settings in RC8 and they worked fine. When I upgraded to Marlin 1.1.5 they had to be the same before if work function correctly.
Also required

//A Fix-Mounted Probe either doesn't deploy or needs manual deployment.
#define FIX_MOUNTED_PROBE

Edited 3 time(s). Last edit at 12/30/2017 11:00AM by Roberts_Clif.

Thanks it was “// set to same logic as "Z_MIN_ENDSTOP_INVERTING” . It works just fine now thanks a lot.
And happy 2018