Mesh Grid - Result is not ok

AlexLin

But here you have only performed bed level with the leads crews. Not any mesh, i.e. G29. At least I don't see that in bed.g file.
There is something seriously wrong.... Why are the x and y coords of you sample points not in a grid? Isn't that that the plot straight from above?it must the perspective...
Why do you deploy for the ir sensor?

lui2004

Hi
Thanks for your answer

Also i have to add this code in bed.g

; mesh probe
G29 S0

My english is not The best can you give a advise

lui2004

i think i found the problem i have insert bed leveling with mesh

now i have only mesh

20.00,200.00,20.00,200.00,-1.00,40.00,40.00,5,5
0.015, 0.398, 0.325, 0.287, 0.205
0.322, 0.352, -0.173, 0.335, 0.265
0.342, 0.357, 0.882, 0.337, 0.280
0.305, 0.232, 0.317, 0.285, 0.305
0.168, 0.355, 0.245, 0.232, 0.385

my new config.g

; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2 on Sun Jan 13 2019 14:56:09 GMT+0100 (Mitteleuropäische Normalzeit)

; General preferences
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves

; Network
M550 P"AM8" ; Set machine name
M552 S1 ; Enable network
M587 S"WLAN-363335" P"luigello20101984" ; Configure access point. You can delete this line once connected
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S0 ; Drive 2 goes backwards
M569 P3 S1 ; Drive 3 goes forwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X100.00 Y100.00 Z400.00 E100.00 ; Set steps per mm
M566 X600.00 Y600.00 Z18.00 E300.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E6000.00 ; Set maximum speeds (mm/min)
M201 X1500.00 Y1500.00 Z100.00 E10000.00 ; Set accelerations (mm/s^2)
M906 X500.00 Y500.00 Z500.00 E800.00 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X-33 Y-10 Z0 S1 ; Set axis minima
M208 X220 Y220 Z240 S0 ; Set axis maxima

; Endstops
M574 X1 Y1 S0 ; Set active low and disabled endstops

; Z-Probe
M574 Z1 S2 ; Set endstops controlled by probe
M558 P1 H4 F120 T6000 ; Set Z probe type to modulated and the dive height + speeds
G31 P500 X0 Y0 Z2.180 ; Set Z probe trigger value, offset and trigger height
M557 X20:200 Y20:200 S40 ; Define mesh grid

; Heaters
M305 P0 T100000 B4388 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S130 ; Set temperature limit for heater 0 to 130C
M305 P1 T100000 B4388 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S275 ; Set temperature limit for heater 1 to 275C

; Fans
M106 P0 S0 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

; Automatic saving after power loss is not enabled

; Custom settings are not configured

; Miscellaneous
T0 ; Select first tool

bed.g:

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v2 on Sun Jan 13 2019 14:56:09 GMT+0100 (Mitteleuropäische Normalzeit)
M561 ; clear any bed transform
G29 ; probe the bed and enable compensation

My New Result Mesh:

Phaedrux

Does your bed surface have a bit of a reflectiveness to it? Can you try probing your bed with a piece of plain white printer paper on it? I'm thinking maybe the IR probe isn't getting a good reading from your bed surface.

lui2004

I have The buildtak Vertex

I will Test it tommorow

If its reflectiveness what i can use to probing?

Phaedrux

You can try adding an A and S parameter to your M558 command to try and increase probing consistency.

M558 A10 S0.003

this will cause the probe to probe up to 10 times if the consistency of two consecutive probe results are within 0.003mm of each other.

lui2004

Like this

M558 P1 H4 F120 T6000 A10 S0.003

Phaedrux

@lui2004 Yes

lui2004

Ok i i will test now

lui2004

with white printer paper i got

Error: Z probe already triggered before probing move started

with M558 P1 H4 F120 T6000 A10 S0.003

i got

20.00,200.00,20.00,200.00,-1.00,40.00,40.00,5,5
0.003, 0.548, 0.559, 0.647, 0.682
0.476, 0.589, 0.143, 0.761, 0.788
0.573, 0.633, 1.234, 0.772, 0.788
0.636, 0.613, 0.753, 0.771, 0.841
0.603, 0.835, 0.740, 0.761, 0.978

Phaedrux

@lui2004 said in Mesh Grid - Result is not ok:

Error: Z probe already triggered before probing move started

Try increasing your dive height perhaps? I'm not super familiar with the behaviour of the IR probes.

I can't tell from the number grid if that's an improvement or not. Does the image look more consistent?

Wyvern

Is there any direct lighting around your machine? is your machine around any natural (outside) lighting? I have read that florescent lighting and possibly LED lighting can cause issues.

lui2004

@phaedrux Hi

no the image is still the same nothing change

hope everybody can help me to solve

lui2004

@wyvern Hi

no, no direct lighting to the machine.

only normal natural lighting and no LED or somthing else

hope everybody can help me to solve

dc42

Are the thick whites lines on the bed in your photo part of the bed, or part of a print? If they are part of the bed then it's possible that you may get a different trigger height when you probe over them, compared to probing over the dark grey areas.

The only types of lighting that affect the IR sensor are direct bright sunlight (no clouds in front of the sun), and bright tungsten halogen light. If the sensor detects too much of either, the LED will blink rapidly.

UnderDoneSushi

@dc42 https://i.ytimg.com/vi/YGnV8EXvhzs/maxresdefault.jpg

It part of the logo, when I saw this I was going to assume it was causing problems. OP's probe also looks like it is over the edge of the bed?

antlestxp

its hard to tell but it almost looks like the logo is clear or doesn't have black. that will trip up an ir sensor

dc42

Yes, the probe points will probably need to be adjusted so that the sensitive area of the IR sensor (roughly under the cylindrical black capacitor) are never off the edge of the bed or over the white areas of the logo.

lui2004

Hi

Yes i found out The white areas are the problem.

I have tested with black matt paper the mesh is flat / green now.

How can i set new probe points only of The black bed for G29?

You have an example for me ?

Sorry my english is bad

dc42

The probing grid for G29 is defined by the M557 command. You would need to chose the X and Y spacings and the range to avoid the white logo.

Alternatively, if you can probe with a piece of black paper lying flat on the bed, do that. If the printer is mechanically stable, you shouldn't need to probe very often. For most prints you can load the height map produced by the last probing you did, by sending command G29 S1.