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Re: Is it possible to allow homing of Z axis only with hot nozzle?

April 12, 2020, 7:14 am
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the bltouch has a extendable probe that is reasonably long...

It sounds like you need to move you bltouch lower so that the probe extend much lower that the nozzle, not just a mm or so.
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Re: Is it possible to allow homing of Z axis only with hot nozzle?

April 12, 2020, 8:39 am
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That's a good point, thanks.

But nevertheless this could happen in an unlucky situation.
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Marlin 2.0.5.3 won't home properly

April 12, 2020, 12:12 pm
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I bought an SKR v1.3 board a while ago and I got some time now to upgrade my printer. I bought the TMC2208 drivers with it. I am able to get most of the configuration working except for homing. I have enabled individual homing in Marlin. I'm using an inductive probe for homing my Z-axis.

I can home the X and Y properly but while I home Z, this is what happens (listen to that awful grating noise just before Z homing starts). `Z_SAFE_HOMING` is enabled and is set to move the X and Y to the middle of the bed and then home Z (the default state in configuration.h). The full configuration is available here. configuration_adv.h is available here. What am I missing here?

I should also mention that I have de-soldered the R11 pullup resistor for Z-min endstop from the board.
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More decimal on lcd display for step

April 12, 2020, 5:05 pm
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Hello everyone,
I'm a beginner on Marlin firmware,
I finally received my skr e3 motherboard on an ender 3,an I have a problem to the step.
I can enter the steps / mm only at one digits (80,x) before on the last fw I had two digits after the decimal point(80,xx) , or it must be reconfigured to have availability on the screen?
I want to configure the step on the screen.
My pc is not near to my ENDER3, I don't have an octoprint.
Thanks!
Sorry for my bad english... I am french B)
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Re: More decimal on lcd display for step

April 13, 2020, 1:04 am
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Re: linear advance settings

April 13, 2020, 7:44 am
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Can you tell me the relationship between acceleration and linear advance? If I increase acceleration how does that affect LA? I have the same question for Ejerk. I've seen some posts that say LA and s curve acceleration are incompatible. I've tried with scurve enable and disabled and can't see any difference between the two.
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Marlin 2.0.5.3 Viki2 Blank Display

April 13, 2020, 9:35 am
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Hello Everyone,

I am having issues getting an Airwolf Axiom upgraded to Marlin 2.0. I have everything configured and working, including steppers, homing, thermistors and heaters, but the LCD screen, a Viki2, is blank.

I believe it's either an issue with U8GLIB 1.18, or Marlin 2.0. With the exact same setup and wiring, the LCD works fine on stock Airwolf firmware, built on Marlin 1.0.0, and on Marlin 1.1.9. I think both of these use 1.17 U8GLIB.

Moving to Marlin 2, I have tried with the main release, the bugfix, and the 2.1 dev branches, and on all of them the display is blank. The display is backlit, but it looks like the contrast is set to 0, and the M250 command does nothing. I have also restarted the configuration and only enabled the Rambo board and the Viki2 settings, and the display still comes up blank. All other features work as well as the other parts of the LCD. On Marlin 1 the entire LCD works, and on Marlin 2 the SD card reader, the temperature LEDs, the reset pin, and the backlight are working.

The pins are the same for the Viki 2 / Rambo combination between all the different firmware versions, and I have double checked and tried everything else a dozen times.

Does anyone have any idea what is going on here?

Thanks!
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Re: linear advance settings

April 13, 2020, 9:52 am
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In general, the higher the acceleration the more LA needs to compensate.
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Mariln firmware issue

April 13, 2020, 10:31 am
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I have been building a RAMP 1.6 system using Marlin 1.1.x-bugfix (which is 1.1.9 I believe) in an old 3D printer that had it's proprietary control board blow. For a while I've been trying to get it to print a 100mm cube without an odd layer 10-15 issue and then clears up to no avail so it's been sitting. I assumed it was mechanical and never got back into fixing it.

I've recently decided to try to print some face mask ear reliefs for our local hospitals, but the layer issue has turned into an offset issue. Regardless of the settings, layers 1-5 print near flawlessly but 6-10 are offset exactly 12mm [attachment 115263 20200413_125907.jpg]. I would assume if it was a mechanical issue, it would vary on the layers affected, position on the bed, orientation, print speed etc.

I've looked at the gcode file with OctoPrint, Slic3r and Cura (which generated it) and none show the layer offset so I'm suspecting it's firmware, but WHY is the question. I saw a bug report on it in the Marlin bug tracker, but it was closed with no defined resolution that I could make out. I'm suspecting it's something specific with the DRV8825 drivers since some have the issue and other do not.

I'm running another test print with the pattern turned 90deg to see if the offset follows the axis or follow the pattern and changes to the X axis.

Any help would be greatly appreciated.
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Re: linear advance settings

April 13, 2020, 10:47 am
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I'm looking for a way to test different settings but I'm not sure what to test for. The tests I've been doing just confuse instead of clarify. If I tested different accelerations I could probably get some useful data? I re-ran LA calibration prints.

picked 1.0

printed a cube k0.9-1.1 with k0 between each value

not what I was expecting
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moving from bug-fix build to release build

April 13, 2020, 3:51 pm
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I have been running the bug-fix source of Marlin for quite a while and decided to move over to the release version instead. I figured I should be able to just copy my 2 config files and the platformio.ini file into the new source directory, then create the new workspace in Visual Studio Code. Did that, and ran the build. Got errors about running old config files, so I changed the version info inside the 2 files to 200005 and ran the build again. Next errors were in regards to #define Z_SAFE_HOMING not being enabled, so I enabled it. Now I get a warning saying
"warning: Calling missing SConscript without error is deprecated.
Transition by adding must_exist=0 to SConscript calls.
Missing SConscript 'Marlin\src\HAL\HAL_LPC1768\upload_extra_script.py'
File "C:\Users\Administrator\.platformio\penv\lib\site-packages\platformio\builder\main.py", line 164, in "

followed by
"In file included from Marlin\src\module/stepper/trinamic.h:29,
from Marlin\src\module/stepper/indirection.h:44,
Compiling .pio\build\LPC1768\src\src\core\utility.cpp.o
from Marlin\src\module/stepper.h:47,
from Marlin\src\MarlinCore.cpp:37:
.pio\libdeps\LPC1768\TMCStepper_ID5513\src/TMCStepper.h:14:10: fatal error: SPI.h: No such file or directory
14 | #include
| ^~~~~~~
compilation terminated.
*** [.pio\build\LPC1768\src\src\MarlinCore.cpp.o] Error 1"

Any ideas on how to correct this? I have checked and there are 3 different SPI.h files in the directory structure, none of which are in the directory where TMCStepper.h file is located. The SPI.h is mentioned in the TMCStepper.h file without any relative folder information, and to me that means the file must reside in the same folder, or be in the folder where the TMCStepper.h file is mentioned. I am not a programmer, and I am using old DOS batch file logic to arrive at that opinion. Inside the TMCStepper.h file it also includes a file named "Stream.h", again without any relative folder information, and that file does not exist in the folder that contains the TMCStepper.h file.
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Re: Mariln firmware issue

April 14, 2020, 10:58 am
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I upgraded to the latest FW available, 2.0.5.x and the behavior has changed. Now layers 1-3 print fine and 4-10 are slightly offset but to only a minor degree. I printed 3 of the same on the same platter and all were offset exactly the same (about 2 or 3 mm)

I'm at a loss whether this is a hardware/driver/stepper issue as in it's missing steps or is this chaos being introduced from the slicer (Cura but not the latest as upgrading it is a pain)?
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Origin position in Marlin

April 14, 2020, 1:38 pm
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Good evening,

I have some troubles understanding the position of he origin in Marlin.
What is the difference between X_MIN_POS and MANUAL_X_HOME in configuration.h ?
Let's say I have an endstop in the negative X, and that my nozzle is 20mm away from the bed when it is against the endstop. Which one of this 2 parameters should I define to -20 in order to set the endstop position to -20 and thus have my bed at X=0 ?

Thank you for your help ;-)
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Re: Warning in marlin bugfix-2.0.x Build

April 15, 2020, 12:09 am
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did you eever find out the cause or solution for this? I am having the same error message.
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Can't get Marlin 2.0 to work with my MKS SGEN L

April 15, 2020, 6:14 am
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Hi everyone !
Recently, I've ordered one of thoses MKS SGEN L board, with 5 TMC2209 V2 from MKS.

When I received it, I downloaded the Marlin Bugfix Branch, I configured it and compiled it. No error, the compilation resulted in a success, nothing to say.

Then, I uploaded the firmware.bin file created on my SD card, and put it on my board and... Nothing happend. I have on my SD Card the file FIRMWARE.CUR.

I don't really know what is happening, but my MKS TFT 28 is not reading anything from the printer, I can't send command, receive temperature sensor info etc etc. Also I tried to connect my board on my computer. My device manager don't recognize my serial port (it show it as "Unknown device".) Ho, and I've the LED D6 which shine in RED constantly, with the LED D1 shining on BLUE too.

I tried everything, even to set the serial port 1 to -1 et the second one to 0, but it doesn't fix the problem.

I'm uploading here my config file of my Marlin FW, and a video from me to explain the situation more clearly.

The video Link : [mega.nz]

My marlin configuration : [mega.nz]


Hope you will help me! ^^
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Re: Can't get Marlin 2.0 to work with my MKS SGEN L

April 15, 2020, 6:42 am
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There are apparently issues with bugfix and your board. use stable
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Re: Can't get Marlin 2.0 to work with my MKS SGEN L

April 15, 2020, 9:54 am
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Okay, so i tried to boot up with the latest stable marlin version (2.0.5.3) with the same configuration as before, but... Nothing. i can't connect it to my computer, even with my MKS TFT 28...

I'm going to be crazy of that board! Everything i'm trying is resulting with a failure....
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Re: Origin position in Marlin

April 15, 2020, 10:14 am
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In almost all cases there's no difference - it only really comes into play when you have multiple independent extruders.
I prefer to use X_MIN_POS/Y_MIN_POS since it makes more sense to my brain.
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3D printer Help Needed please!!!

April 16, 2020, 6:27 am
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I have a FLSUN extended bed printer I bought a few years back similar to the one in this link (https://www.aliexpress.com/item/32847633139.html?spm=a2g0o.productlist.0.0.19ea4e9eeaSZrD&algo_pvid=3948f016-cd1e-49dc-a140-1246bc00016a&algo_expid=3948f016-cd1e-49dc-a140-1246bc00016a-7&btsid=0ab6f82115869898286663410e318a&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_) and it worked fine for years up until recently as it cant seem to get over 180C because when connected to repetier host it gives:
Error: Heating failed,System stopped! Heater ID: 0
Error:printer halted.kill() called!
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Re: 3D printer Help Needed please!!!

April 16, 2020, 6:47 am
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... check for loose/broken cables or temp. sensor ...
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