Mesh Grid - Result is not ok

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.

lui2004

@dc42 i will test it to load the highmap and to print

I have order PrintBite in Black Matt hope this will work with your mini ir

Thanks