mini ir probe - G33 fails

boelle

i got one of these IR probes and it works fine with my bed

when i run G33 i get a fail when its 75% done, but it does not say why :-/

my config is here: https://pastebin.com/7PwY7yQs<br/><br/>i have manuel tested that my probe can reach the points i have defined

using the latest DEV downloaded today - the machine is NOT an delta, i just use G33 so i can store my beds disortion in eeprom and only do an G33 every other week

what could be wrong?

boelle

tried to run it again... it stops the same place

X:14.57 Y:42.35 Z:30.000 E:0.0000

boelle

i tried to run it one more time just to check if it fails consistent... it does

Repetier

What is the full output and what is the test area you want to measure?

boelle

full output? i want to probe the whole bed

that is why i attached my config just in case i screwed up the config

19:51:51.501 : Z-probe:12.617 X:83.98 Y:39.43

19:51:51.505 : Error:Stopping distortion measurement due to errors.

19:51:51.510 : RequestStop:

19:51:52.380 : T:24.51 /0 B:25.00 /0 B@:0 @:0

19:51:52.799 : fatal:G33 failed! Printer stopped and heaters disabled due to this error. Fix error and restart with M999.

19:51:52.807 : TargetExtr0:0

19:51:52.873 : T:23.54 /0 B:25.58 /0 B@:0 @:0

19:51:52.873 : wait

19:51:53.432 : T:24.27 /0 B:25.00 /0 B@:0 @:0

19:51:53.867 : wait

19:51:54.534 : T:24.27 /0 B:24.86 /0 B@:0 @:0

19:51:54.870 : wait

19:51:55.630 : T:24.27 /0 B:24.86 /0 B@:0 @:0

19:51:55.874 : wait

19:51:56.729 : T:24.27 /0 B:25.00 /0 B@:0 @:0

19:51:56.873 : wait

19:51:57.828 : T:24.27 /0 B:25.00 /0 B@:0 @:0

19:51:57.877 : wait

19:51:58.876 : wait

19:51:58.928 : T:24.15 /0 B:25.00 /0 B@:0 @:0

19:51:59.879 : wait

19:52:00.024 : T:24.15 /0 B:25.00 /0 B@:0 @:0

19:52:00.883 : wait

19:52:01.128 : T:24.15 /0 B:24.86 /0 B@:0 @:0

19:52:01.882 : wait

19:52:02.225 : T:24.51 /0 B:25.12 /0 B@:0 @:0

19:52:02.886 : wait

19:52:03.326 : T:24.51 /0 B:25.35 /0 B@:0 @:0

19:52:03.889 : wait

19:52:04.425 : T:24.51 /0 B:25.23 /0 B@:0 @:0

19:52:04.888 : wait

19:52:05.520 : T:24.51 /0 B:25.23 /0 B@:0 @:0

19:52:05.782 : N19 M99918

19:52:05.782 : N1 M110*34

19:52:05.786 : ok 19

19:52:05.790 : DebugLevel:6

19:52:05.790 : info:Continue from fatal state

19:52:05.790 : ok

19:52:06.622 : T:24.51 /0 B:25.23 /0 B@:0 @:0

19:52:06.782 : N1 M11034

19:52:06.782 : N1 M110*34

19:52:06.782 : N1 M11034

19:52:06.782 : N1 M110*34

19:52:06.782 : N1 M11034

19:52:06.782 : N1 M110*34

19:52:06.782 : N1 M11034

19:52:06.782 : N1 M110*34

19:52:06.782 : N1 M11034

19:52:06.782 : N1 M110*34

19:52:06.784 : ok

19:52:06.788 : ok

19:52:06.792 : ok

boelle

its one of those mk42 beds like on the prusa mk2, only i have mounted it on a mendel90

it has a mat black surface like recommended for these ir probes... only in the corner there are some white logos to prevent stupid people from getting burned... on top i have a PEI sheet

i have tried to use a black permanent marker to cover those logos to see if it makes a difference..

boelle

that did not help anything, and i have no clue whatsoever why it fails

it does about 75% of the 22x22 probe points and then fails

MartinH

I dont think your P1 P2 Y probing positions are reachable.
You have a Y min= 23.5
You have probe Y offset=28
You min P1 P2 Y =28-23.5 = 4.5

Allso, looks like you have coma's instead of fullstop in the bed dimension settings (not sure if this may cause errors).

boelle

hmm... you might be on to something

it fails arround those positions anyway

when homed the nozzle is at Y-23.5 and the probe is then at Y4.5

since this is an IR probe it can be picky about things and give false signals... just as a test i have placed some black duct tape arround the board as to give it tunnel vission downards and to minimize ir light going direct to the board

22x22 points take a long time but so far it looks good

boelle

ohh... about the comma's

i tried to replace them with periods in the online config tool but it seems to replace them back to comma's

if my current test runs good i will try and replace the comma's back to periods once more

and from there slowly enlarge my probe field so i get as close to the border i can

current settings are: https://pastebin.com/WT3G7ytj

boelle

the black duct tape helps

but it still fails near the end.... it could have been nice that the error box in repetier host told why it failed

was it because it could not reach the next point or was it something with the probe trigger

boelle

a side thought.... if i did enter wrong probe pos would the arduino ide not throw an compile error?

or would it in fact start to probe and fail when it tries to go to the pos?

then its strange as the fail happen only when it goes in the x direction... never when it goes from one y pos to the next... i could understand if the fail happen at the last point on X before it goes to next line on Y and starts over...

hope that made sense

boelle

first success....

i lowered number of points pr axis to 11 and it worked, will repreat 2 mor times to see if it is a success each time

after that i will try and expand the area so i get closer to edge

boelle

hmm... after that success run i tried to home the axis as i wanted to try the build heightmap feature

it did home but it then it tried to home again without respecting the endstop... what a loud noise

i do have a few older versions of the dev firmware but i doubt it will change anything

boelle

repetier host crashed during the build of heightmap... but it was just for the fun of it

now i have enlarged the area just a bit and it had one fail... on the 2nd attempt now

is there any setting i can use to make it a bit more imune or forgiving to false triggers? like more probe repeats ??

MartinH

Glad your making progress, i have read , this is a downfall of using an IR probe,you get false reflections,maybe a matt black surface would be better.
I know on the reprap forums, ppl have tried painting the underside of their glass bed with black paint.
As a side note,maybe 22x22 probe points is too much for the memory available in eeprom, i would try 6x6 and work up from there if successful.

boelle

my bed is matt black with a PEI sheet over it (the bed is the same as on prusa mk2, but just mounted on a mendel90 instead)

right now testing with 11x11 points but will lower it and try again

boelle

oh btw.... when i used a clip on probe with a micro switch 22x22 worked fine

its just a pain to use since i have to remove the hotend while i use it (takes up to much space) and the downside to that probe is that i cant get close to the edges...

the ir can get alsmost to the edge and i have checked with manual moves that i can to the points i have in the config.

more laters

boelle

more testing...

there are one corner where it triggers early for some reason... its the same every attempt so i would rule out false triggers

sadly that corner is the first point for the last row so i dont know if the rest of that row is ok

there is about 12mm difference on that corner and the only numbers i can think of is that it goes up 10mm between probe points and i have set it to go up 2mm to untrigger the probe

the 10mm is also time consuming so i will try and lower that to like 1 as it would allready go up 2mm to untrigger and 1 extra is plenty in my case

also placed a kitchen towel arround the bed at that corner to rule out that the surrounding machine parts reflects ir