Z-Probe on Delta (Hexagon V2) wrong Z-High after Probing

cradi

Hello,

i want to enable Z-Probing in Repetier 0.92.8

I have installed x,y,z max Switches for Homing. It works well.

If i use G32 to probe the bed everything is fine, i get three points. But after that, my Zmax hight isn't correct.

Z_PROBE_BED DISTANCE 10

After G32 the Log says Printer hight is 445.82, but it is about 24.4 mm too much.

Where is my mistake?

Regards Christian

cradi

i must add some Informations:

I use an Z-Probing with FSR Sensors. So i have no Distance between Nozzle an Sensor.

cradi

sorry, my Firmware Version is the actual Version 0.92.9

Is it helpful to use the dev Version?

Repetier

This error might come from bed coating or z probe height. Coating should be zero and z probe height 0 or a small negative value if bed bends until triggering force is reached. These determine z height after probing.

cradi

Hello,

please have a look at my configuration.h

https://dl.dropboxusercontent.com/u/28536763/Configuration.h

An here is the log from my calibration. I do the same steps as in your video shown.

< 07:19:56: FIRMWARE_NAME:Repetier_0.92.9 FIRMWARE_URL:https://github.com/repetier/Repetier-Firmware/ PROTOCOL_VERSION:1.0 MACHINE_TYPE:Delta EXTRUDER_COUNT:1 REPETIER_PROTOCOL:3

< 07:19:56: Printed filament:135.63m Printing time:1 days 17 hours 57 min

< 07:19:56: PrinterMode:FFF

< 07:19:56: DebugLevel:6

< 07:19:56: DebugLevel:6

< 07:19:58: Info:Autoleveling disabled

< 07:19:59: SelectExtruder:0

< 07:19:59: X:0.00 Y:0.00 Z:445.800 E:0.0000

< 07:19:59: Info:Autoleveling enabled

< 07:24:11: Info:Autoleveling disabled

< 07:24:12: Tower 1:160

< 07:24:12: Tower 2:161

< 07:24:12: Tower 3:0

< 07:24:13: SelectExtruder:0

< 07:24:13: X:0.00 Y:0.00 Z:445.800 E:0.0000

< 07:24:59: Z-probe state:L 

< 07:25:08: Z-probe state:L 

< 07:25:16: Z-probe:34.43 X:0.00 Y:0.00

< 07:25:28: SelectExtruder:0

< 07:25:28: X:0.00 Y:0.00 Z:445.800 E:0.0000

< 07:25:59: SelectExtruder:0

< 07:25:59: X:0.00 Y:0.00 Z:445.800 E:0.0000

< 07:26:03: Z-probe:34.39 X:20.00 Y:20.00

< 07:26:08: Z-probe:34.63 X:90.00 Y:20.00

< 07:26:13: Z-probe:34.50 X:-20.00 Y:-90.00

< 07:26:15: plane: a = 0.0035 b = -0.0023 c = 34.3631

< 07:26:15: Transformation matrix: 0.999994 0.000000 -0.003529 0.000008 0.999997 0.002304 0.003529 -0.002304 0.999991

< 07:26:15: CurrentZ:34.50 atZ:35.00

< 07:26:15: Z after rotation:35.00

< 07:26:15: Printer height:445.30

< 07:26:15: Info:Autoleveling enabled

< 07:26:15: X:-20.12 Y:-89.92 Z:34.636 E:0.0000

< 07:26:15: Info:Autoleveling disabled

< 07:26:19: SelectExtruder:0

< 07:26:19: X:0.00 Y:0.00 Z:445.300 E:0.0000

< 07:26:19: Info:Autoleveling enabled

 

The Problem after G32 S2 is, the printer high. It is too high, so every following command fails with a damage in the bed. 

Regards Christian

Repetier

Z_PROBE_BED_DISTANCE 0

should be 5mm or so. It's how much it goes up. You z probe height is set 0.1 and should be 0.

That said, check which values are in eeprom that get really used. I think there you have different values.

cradi

Hello,

ok many thanks, now i get it run. auto leveling is now korrekt. There was a wrong value in the eeprom for Z_Probe_High.

Next step is Distortion_Correction in your Video.

G29 measure only three points and give a average height. In the video it measure more Points, In configuration.h ist the Value 5

My configuration.h is now this one.

https://dl.dropboxusercontent.com/u/28536763/Configuration.h

Many thanks for the support.

Regards

Christian

Repetier

G29 is now G33

and you have not compiled distortion correction, see

#define DISTORTION_CORRECTION 0
#define DISTORTION_CORRECTION_POINTS 5
#define DISTORTION_CORRECTION_R 100
#define DISTORTION_PERMANENT 1
#define DISTORTION_UPDATE_FREQUENCY 15
#define DISTORTION_START_DEGRADE 0.5
#define DISTORTION_END_HEIGHT 1
#define DISTORTION_EXTRAPOLATE_CORNERS 1
#define DISTORTION_XMIN 10
#define DISTORTION_YMIN 10
#define DISTORTION_XMAX 190
#define DISTORTION_YMAX 190