looking for someone with a geetech G2S or other delta that has this firmware working

spikey1973

Hey Guys,

I am the owner of a Geeetech G2S (dual extruder) and have been able to get my printer working.. from the start i had one problem after the other.. Finally i had the hotend break off..
At this point i desided to upgrade the hot ends.. I build in E3D v6.
Recently i also changed the A4988 driverlooking for someone with a geetech G2S or other delta that has this firmware workings for DRV8825 drivers and set the jumpers for 1/32 steps. (changed the towers steps per mm) from 80 to 160 and the extruder from 93 to 186)

I tried to adjust the positions of the hotend in the program which seemed to be oke. but had some other major problems getting to work with repetier host.

So basically what i am looking for is someone who's got his delta printel (preferrably a G2s) working that can guide me though a little so i can find out if there is a hardware or just setup problem.

Any help would be much appreciated.

Hope to hear soon.

spikey1973

ps: geetech G2S with GT2560 mainboard

i did find these links
http://reprap.org/wiki/File:Delta_Rostock_mini_G2s_MOD_Repetier_0.91_Configuration.h https://www.thingiverse.com/thing:1301129 but it didn't help

Repetier

It is not very helpful to say you have problems without saying which problems exactly. Forum is full of solutions to problems, so how should we know?

spikey1973

the problem is that there are many problems and it seems nearly impossible for me to differentiate.
I tried going for it problem specific but that led to no improvement.

Thats why i'm asking for someone who works with the same printer and same software to it will make it easier to see why what is happening.

Buty there are calibratrion, homing and positioning problems.

spikey1973

Anyway oke.. I'll try to start from the beginning then again.
software:
Repetier host - 2.01
Repetier firmware - 0.92.9

Firmware config files:
https://www.dropbox.com/s/crky5jdcss880sk/Configuration-2017-05-28.h?dl=0 https://www.dropbox.com/s/vchnk2e4s4lvutb/config-2017-05-28.json?dl=0 Host settings according to:
https://www.youtube.com/watch?v=VCa_Bvx8OWs at this moment the first obstacle i run into that when i manually upper and lower all three carriage go up and down neatly, but when i try to home only the front left carriage (X -pillar?) moves.. (untill it crashes the pillar)
when it is high enough that it will hit the endstop before it crashed the pilar it reacts as it has homed, but none of the others pillars have moved / homed yet)

any help on this issue and following problems are very much appreciated.

Kind regards

Matthieu

Repetier

To be sure, moving z moves all three or x,y, z move the matching pillar? In latter case you need to slect DRIVE_SYSTEM DELTA to tell firmware you have a delta.

Other possible reason is crosstalk so endstops trigger as soon as you start the move causing the 2 to stop immediately. Or endstops are configured wrong. M119 should show x,y and z max endstop with L when untriggered.

spikey1973

Oke this i should've been able to figure out myself. apparently the connections of the endstops wires that connect to the mainboard were not functional anymore, leaving a bad contact.. this is the last place where i'd expect problems from and this could be also the 'cause' of more than this problem and might also be the 'cause of many ghostly problems i had before.

I'll continue now with the calibration now but this all will take me a few days to do good. after wich i will continue with bed calibration with the probe.

anyway, thanks a lot for the help in this first stage.

Greatz, Matthieu

spikey1973

one odd thing though. I did a quick determination of the Z-length and set is as 180.68 in repetier-host : Home Z: 180.68 (is this correct? it was Max in the older version, seems like a risk for error when by accident different values are entered) Printable Height: 180.68 Repetier Firmware: Z-max-lenght: 180.68

but when i home the printer shows 180.681 it might not make much of a difference but i don't understand where that .001 comes from. as i triple checked the set values..

Greats Matthieu

Repetier

Firmware uses steps as resolution so converting back gives rounding errors in float. Do not think about that.

spikey1973

oke thank you !

spikey1973

Oke, it really seems like the bad contacts were really the main problem here.. so i did my basic calibration and i now started to do the bed height mapping.

did it already once.. and i also tried with more measure points. (10x10)
strangely enough the first time it looked like something went wrong with the first measure point (being +/- 26mm ) instead of the normal +/- 182 mm.

for one strange reason it lowers to an extreme right point to what i interpret as approx 25 mm above the bed and then comes back (less extreem, but still) right and lowers to test the bed..

but in the measurement it takes this 26 mm instead of the 182, which it is supposed to be.

anyway.. something clearly goes wrong..

1) the first measurement. '
2) when start at a lower point it starts at the middle in stead of the first point after which it goes to the second point. for the last row it repeats it's measurement at the centre one spot only.

also what i find odd also is that the carriages go all the way back up in between the measure point but doesn't actually home. Also at that point it has a small "jump" and then moves to the new position. this is what i believe the cause for the inaccurated hight mapping.

i'll add as much images of the situations as i can.

the first image is a normal start.
the second image is start from a lower point.

Roko

Just curious, I realize you want the bed map to look right, but how does it print?

Repetier

Please go down to Z10 before starting G32 or startign height map. If you start from top especially height map you get errors since you can not move to all xy positions at top without hitting endstops.

spikey1973

@ repetier: am not sure what z10 and or g32 are but i'll figure that out.
i indeed found the errors.. but when i started at a hight lower say a height @ 25 mm (Z25 ?) it had that end point error but i'll look into the z10 before i try something else.

@ roko:
I tried to print with my old setup.. did some calibration prints.. (square hollow tower, a temp test, and the little boat. the last one failed massively. from there on i eeded to clesn the hot end. broke it. changed it.. to the E3D v6 hot ends. and while i was working on the conversion i als changed the endstops to more sensitive hot ends and drv8825 stepper controllers) since then i ran into more strange errors and felt like i should run through a propper calibration before i went to the next level being printing, so i really have no answer for that.

Repetier

Z10 = Z position 10 - so I meant simply go to Z = 10 before doing the z probe stuff.

What is the endpoint error? You need to set probing reagon where you can reach it with probe of course.

spikey1973

sorry i didn't explain that properly..

when i started at lower (say z=25, haven't tried z=10 yet today) i found that (with a (quick) 3x3 matrix) it does the following.
1) measurement at centre point (in stead of intended point 1/9).
2) measure at normal measure point 2/9, followed by 3/9
3) measures the middle row correct (4-6/9)
4) measure 7/9 at the intended 8/9 point, followed by anther 8/9 (as it should and then stops (so no 9/9)

so really it measures only 2 correct in the first row, 3 in the 2e row and only 1 in the rd row.
i tried this twice..
but as i said it didn't start at z=10
i will try that tomorrow.. with a 3x3 matrix

Repetier

Z 10 or 25 makes not real difference. Did you mean with host or G32 as these are completely indiviual solutions with individual settings. For G32 it should do 3 rows if set as grid leveling. But Make sure to position points like in the image of the config tool and that eeprom has the right coordinates or you get a parallelogram with positions you do not expect and cause problems.

spikey1973

it was via host.

wasn't much aware of the G32 option.. just looked it up and went and go and tried it..
seemed to work. just didn't do the s2 setup to save in eeprom (didn't set that up).
also i will make try to make the grid a bit bigger.

but am not sure what you mean with "Make sure to position points like in the image of the config tool and that eeprom has the right coordinates" but i will look into it.

kind greats

Matthieu

spikey1973

did G32 S2:

the following are the results.

13:46:40.147 : plane: a = -0.0011 b = -0.0070 c = 25.4747

13:46:40.147 : Transformation matrix: 0.999999 0.000000 0.001085 -0.000008 0.999976 0.006971 -0.001085 -0.006971 0.999975

13:46:40.147 : CurrentZ:25.01 atZ:25.00

13:46:40.147 : Z after rotation:25.00

13:46:40.147 : Printer height:180.69

13:46:41.149 : Info:Autoleveling enabled

13:46:41.149 : X:45.03 Y:45.17 Z:24.550 E:0.0000

13:46:41.149 : Info:Autoleveling disabled

13:46:48.820 : SelectExtruder:0

13:46:48.848 : X:0.00 Y:0.00 Z:180.694 E:0.0000

13:46:48.848 : Info:Autoleveling enabled

still a 5 point matrix, but tried to increase the correction radius from 55 to 90.
but am not sure this actually worked (still to small when actually measuring)

also i would like that more matrix points
and know which values (names) to look for to calculate the actual: DISTORTION_UPDATE_FREQUENCY
max speed = MAX travel speed (X=Y=Z)?? and what is a good value.. it is now set as 400 with resolution at 160 and 1/32.
but where do i find updates per second?

also to store the transformation matrix in the eeprom should the eeprom mode be enabled (1 or 2) or can it be disabled)

Also is there a simple formula to calculate the correct, correction radius taking the platform diameter and correction points per axis. As this gets a lot more complicated when this will get more then (say 9)

Kind regards

Matthieu

spikey1973

more or less a bump post..

but i would really like to know what the correct settings are in the firmware (and host) so i can store the transformation matrix in the eeprom.

and how to make the matrix more precise if that would have any benefit...

Kind regards

Matthieu