Dc42 ir probe on the way

Torro

19:54:37
G32
Manual corrections required: 0.00 turn up (0.00mm) 0.01 turn up (-0.01mm) 0.22 turn up (-0.11mm) 0.53 turn down (0.27mm)

19:53:32
G32
Manual corrections required: 0.00 turn up (0.00mm) 0.12 turn down (0.06mm) 0.07 turn up (-0.03mm) 0.38 turn down (0.19mm)

can´t get it better

Torro

next round

Did another G29, added G29 S1 in config.g
in DWC, mesh compensation in use.

at Xmax Z0, paper is loose. babystepping offset -0.1 paper is gripped
at Xmin Z0, paper is gripped, Z+0.15 papier is loose.
in the middle of the bed, where G30 in homeall.g is done, the distance from the nozzle to the bed is fine.

no compensation. should it compensate already at this time?

just to test, i added X0 Y0 Z1 to the M558 command

M558 P1 X0 Y0 Z1 H5 F120 T6000 A3

still no compensation.

did a macro with

G30 S-1
G1 Z10
G30 S-1
...... repeated 10 times

to check, if the probe is ok. i´m getting results between 0.356 and 0.363mm @Xmax and 0.325 and 0.331mm @ Xmin

Torro

this is from M122

Bed compensation in use: mesh
Bed probe heights: 0.000 0.000 0.000 0.000 0.000

What is meant by "bed probe heights"?

dc42

Ignore the bed probe heights, thay are the heights of the first 5 points that you probed using G30 commands (normally in bed.g).

Do you have bed compensation taper enabled? Having it enabled and set too low can cause first layer problems.

Torro

it was not enabled. tried M376 H10 and have the same problem.

Torro

i have to print some parts, so i loaded the "old" config.g and leveld like before.

is there a way to configure the printer like it is now and i can play around with the probe?

that´s the "old" config.g before the probe came.

Endstops
M574 X1 Y1 S0 ; Set active high endstops

; Z-Probe
;M558 P0 H5 F120 T6000 ; Disable Z probe but set dive height, probe speed and travel speed
;M557 X14:13 Y14:195 S20 ; Define mesh grid

dc42

When you enable the height map (G29 S1), if you send G1 X commands to do left/right moves, can you see the bed dropping when you move the carriage to low X and rising when you move it to high X?

Torro

No, there is no movement.

Z0 @ Xmin pushes the nozzle in the bed, Z0 @Xmax is too far away. When i use babystepping to get the nozzle to the correct distance, i have an offset of about 0,2mm. In the middle of the bed, it's fine.

dc42

@Torro, did you resolve this?

Torro

no, the probe seems to have problems with my bed surface.
i gave up the leveling.

dc42

@torro said in Dc42 ir probe on the way:

no, the probe seems to have problems with my bed surface.
i gave up the leveling.

If it's a transparent surface then the IR probe doesn't give good results unless the underside of the transparent surface is black and the top surface is clean (not coated or scuffed).

gregspruce

@dc42 I'm having that issue with a PEI sheet unfortunately. I'm going to try to find a way to get a superthin, or at least even, coat of hairspray or something over it to get a decent height map generated.

Torro

It's not transparent and not shiny.
the probe measures different trigger heights at different positions.

dc42

PEI is transparent to near IR light.