Autoleveling Feature Problem

eggi89

Hello guys,

i am struggeling to get my Autoleveling Feature correctly setup.

My printer is a Prusa i3 Rework (Cartesian).

1) This is how my G-Code looks like:

M107

M190 S105 ; set bed temperature

M104 S235 ; set temperature

G28 X0 Y0 ; home X Yaxis 

G32 S0 ; autobed leveling

M109 S235 ; wait for temperature to be reached

G21 ; set units to millimeters

G90 ; use absolute coordinates

M82 ; use absolute distances for extrusion

G92 E0

G1 Z0.000 F7800.000

When i start the print, the first layer is not sticking to the bed. I already printed a lot of stuff before i had the sensor.

So there are no issues with adhesion or something. Also the bed is quite good leveled. Any ideas? 

2) The G-Code G28 X0 Y0 is moving down the z-axis after X/Y are homed. This could be dangeours if the nozzle is too close to the bed.

Any suggestions? Thanks in advance!

Regards,
Markus 

eggi89

This is how my configruation looks like: 

// #################### Z-Probing #####################

#define Z_PROBE_Z_OFFSET 0

#define Z_PROBE_Z_OFFSET_MODE 0

#define UI_BED_COATING 1

#define FEATURE_Z_PROBE true

#define Z_PROBE_BED_DISTANCE 5

#define Z_PROBE_PIN 18

#define Z_PROBE_PULLUP false

#define Z_PROBE_ON_HIGH true

#define Z_PROBE_X_OFFSET 31

#define Z_PROBE_Y_OFFSET 10

#define Z_PROBE_WAIT_BEFORE_TEST 0

#define Z_PROBE_SPEED 2

#define Z_PROBE_XY_SPEED 150

#define Z_PROBE_SWITCHING_DISTANCE 1.5

#define Z_PROBE_REPETITIONS 2

#define Z_PROBE_HEIGHT 0

#define Z_PROBE_START_SCRIPT ""

#define Z_PROBE_FINISHED_SCRIPT ""

#define FEATURE_AUTOLEVEL true

#define Z_PROBE_X1 5

#define Z_PROBE_Y1 5

#define Z_PROBE_X2 125

#define Z_PROBE_Y2 5

#define Z_PROBE_X3 70

#define Z_PROBE_Y3 170

#define BENDING_CORRECTION_A 0

#define BENDING_CORRECTION_B 0

#define BENDING_CORRECTION_C 0

#define FEATURE_AXISCOMP 1

#define AXISCOMP_TANXY 0

#define AXISCOMP_TANYZ 0

#define AXISCOMP_TANXZ 0

eggi89

Nobody? 

Repetier

What homing order do you use in firmware. Normally z is not homed if not said to do so.

Regrading your autolevel - what is the problem and why do you autolevel every print. If it changes all of the time ok. But you never said what is wrong after autoleveling. If it is just the distance you need to change z probe height with the difference of the height error.