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Re: After Y-Axis Homing, Arduino reboots

April 29, 2019, 4:01 am
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Hi there,

I have tried doing them separately, and once in ten it is working but usually not.

I had bugfix-1.1.x on and then last night tried version 2. I could do a full home but it ignored the z-safe homing and homed z when x=0 and y=0 instead of where x=150 and y=150. I could do a g29 afterwards and looked like it worked perfectly. I only had time to test once will test more tonight.

I have not changed anything in Marlin itself other than the config file.

Regards

Nic
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Re: After Y-Axis Homing, Arduino reboots

April 29, 2019, 4:04 am
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Could it have something to do with the changes I made here but I do not think so:

// Set the boundaries for probing (where the probe can reach).
#define LEFT_PROBE_BED_POSITION MIN_PROBE_EDGE
#define RIGHT_PROBE_BED_POSITION (X_BED_SIZE - MIN_PROBE_EDGE ) + X_PROBE_OFFSET_FROM_EXTRUDER
#define FRONT_PROBE_BED_POSITION MIN_PROBE_EDGE + Y_PROBE_OFFSET_FROM_EXTRUDER
#define BACK_PROBE_BED_POSITION (Y_BED_SIZE - MIN_PROBE_EDGE)

Regards

Nic
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Marlin2 on STM32/ Alfawise : Skipping steps on Y axis

April 29, 2019, 7:50 am
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Hi forum members.

We have completed the SW porting of Marlin 2.0-X bugfix / 14/04/2019 on Alfawise U20 and U30 boards. Software is running fine, and the issue we have is we need to drastically slow down the machine as head movements is really brutal compared to the stock software.
Even by doing so, we have skipped pulses on Y axis, with the mooving bed.

Is there a limitation on how Marlin is handling slow speed and soft accelerations? We have 100ohms sensor resistances on A4899 drivers. We have a stock Vref of 0.85, and we have to bump it up to 0.97v, which is increasing the intensity quite a bit.

Is this anything you already noticed on other printers?

SW: [github.com]

It includes a direct Marlin loading capability on the SDcard, to replace genuine SW.
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Re: Marlin2 on STM32/ Alfawise : Skipping steps on Y axis

April 29, 2019, 9:16 am
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What do you mean by 100 ohm sensor resistances on your A4899's ?

Hoping you don't mean the current sense resistors are 100 ohm each ?
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Tarantula compile error

April 29, 2019, 9:16 am
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I was setting up auto bed leveling on my Tevo Tarantula, following Arcaded's guide: [www.elf-games.com]
When I try to compile the firmware I am getting this rerror message:

#error "A probe needs a pin! Use Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN or Z_MIN_PROBE_PIN."
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Re: After Y-Axis Homing, Arduino reboots

April 29, 2019, 9:46 am
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I do not believe your above changes should/would cause it to reboot. As a test, comment out the 4 lines above by adding // in front of them. Then try to home a single axis in pronterface. x, y and z should home perfectly 100% of the time in pronterface. If they do not and as you say you did not change anything else, then your problem is not Marlin, but hardware related. Can you post number/spec of the buck converters you used. You need to be sure they are able to supply the required current.

Specifically what changes did you make to Ramps to make it 24V compatible?
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Re: Marlin not driving stepper motors properly

April 29, 2019, 10:08 am
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Hi There,

i am wondering if my printer does not suffer the same issue. We lack torque on Y axis, and it seems considerably slower than the regular alfaise firmware. We have to constrain speeds down to 60mm /s printing, and even with that, we get sometimes skipped Y steps.... Did you found anything?
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Re: Marlin2 on Alfawise : Skipping steps Y axis. Stepper bursts???

April 29, 2019, 10:16 am
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Re: Marlin2 on Alfawise : Skipping steps Y axis. Stepper bursts???

April 29, 2019, 10:44 am
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This looks awfully similar to this :

11047

We have 4988 drivers. I will now check with an oscilloscope.
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Re: Marlin 2.0 Retraction doesn't work

April 29, 2019, 1:03 pm
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After swapping extruder doesn't work at all. Now i don't know if MB is faulty
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Re: Tarantula compile error

April 29, 2019, 6:01 pm
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In your Configuration.h you need to set 

#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
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Marlin 2.0 on Chitu Board, I want to help test

April 29, 2019, 7:41 pm
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I have the Chitu F board that comes stock inside of the Qidi X-Series of printers, at list the Xone2 and the X-Pro, I cant say for sure that the board is the same on the newer bigger machines that they have came out with but since the screen user interface looks the same I am pretty sure it is the same. I have seen that getting Marlin 2.0 to work on the Citu F board has already started but it said something about issues needing to be tested out. I have Complied Marlin 1.0 for MKS Gen L and MKS Base V1 as Well as for the Due-Ramps FD V1 and have no problems getting it to work on all of those boards. I would like to help the Marlin team out but I dont know how to do so. I have the board and all of the extras that can be purchased for this board direct from CBD and even have multiple screen sizes for it so I am willing and ready to help if anyone can give me some kind of information on how to do so. I have looked for the Chitu F board in the list of supported boards and did not see it or I just would of complied and flashed the firmware and then posted my results. But since I havent figured that first part out I am stuck. Thanks in advanced - Chris
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Re: Marlin 2.0 on Chitu Board, I want to help test

April 29, 2019, 7:51 pm
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Oddball Thermal Runaway problem

April 29, 2019, 8:13 pm
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So I recently switched from klipper to marlin to do some laser engraving as klipper doesn't support rapid M106 commands.

After my job was done, I figured I'd do some tests with Marlin before flashing my old firmware back. I noticed that once my part cooling fan kicks on it cools the nozzle and triggers a thermal runaway error.

The short-term solution was to just limit the fan speed and continue on with my life. However, I've never had issues maintaining temp at full power with Klipper, yet I seem to with Marlin.

Does anyone have any advice on how to improve the heater so I don't have to gimp my fan speed?
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Re: Tarantula compile error

April 29, 2019, 11:21 pm
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Re: After Y-Axis Homing, Arduino reboots

April 30, 2019, 2:36 am
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Hi there,

Made some progress but not much. I went back last night and checked my Marlin version 2 config again. I firstly did put back the original lines from the config for the above lines and the firmware did not compile. I then put these lines back as they always worked. I then discovered that I did not have Z_Safe_Homing enabled, I enabled it and compiled and uploaded it. Low and behold it worked. I tested it three or four times and was satisfied it worked and my homing worked as it should. I then put all the covers back on, ready to print again. I just tested again after the covers were back on and it did not home as it should again. I tried a few moves and nothing. I then compiled it again and uploaded. It worked once again and then went back to stay in the corner. At least it looks like it is not rebooting anymore but it now just stays in the 0 corner.

I am starting to suspect it may be a loose wire or something, I just don't know anymore.

To make the ramps 24V compatible I changed both fuses to 5A blade fuses for cars. My heated bed is a 220V bed so I did not need the high current fuses on the heated bedside of the ramps. I also removed the diode supplying power to the Arduino.

As far as I tested the voltages with my AVO on the ramps outputs, it was all correct. My inductive sensor also supplies 2.7V when not triggered and 0.3V when triggered. I also tested my end stops and inductive sensor several times with M119 and it was correct.

Regards

Nic
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Re: S-Curve Acceleration Control

April 30, 2019, 12:41 pm
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You don't need to, but you'll probably end up with faster prints with the same quality if you do.
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Re: Marlin 2.0 Retraction doesn't work

April 30, 2019, 4:14 pm
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Hi, Just wondering what drivers you are using? I'm using a SKR V1.3 with four TMC2208 and I'm getting unusual retraction. It works perfectly with a four tower retract calibration but just falls apart when printing a benchy.

I'm still working through exactly what's happening but I did notice that retraction completely stopped over 30mm/s, even when raising Vmax E to 50mm/s.
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Re: After Y-Axis Homing, Arduino reboots

April 30, 2019, 7:35 pm
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Hi There,
I think I found my problem. It is endstop noise. I have read that Marlin made changes to their noise filters and that makes version 1.1.9 and 2.0 much more sensitive to noise. Luckily V2.0 gives you options and I had to disable interrupts and set the noise filter to 2.

That fixed my problem. I am now going to try and fix the source of the noise in the printer to be able to use interrupts again.

Regards

Nic
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Re: Marlin 2.0 Retraction doesn't work

May 1, 2019, 1:20 am
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I have tried with waterrot TMC2130 and DRV8825. Results are the same. I have also 2208 by lerdge but i don't know which pads to connect to have them in uart mode.
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