Hi Kris, will this work with a SKR Mini E3 v2? It has to Z motor plugs but one Stepper driver for the 2 Z motors. Awesome work!

I have been asking forums for this for days. Thank ks!

thank you for putting this updated firmware out for both the TMC2208 and TMC2209.

Wow, just an amazing job. All very clear and complete.

And now I returned to this video after buying a SKR 2.0 (after a failed upgrade to a fysetc spider) :))

Kris, thanks for posting this, and sincerely - thank you for the Marlin build. It was nice to have it 'just work'.

Nice, I changed my printer to 3 Z steppers to take it to the next level. I would not tighten the bed adjustment springs too much, you want a bit of flexibility in case the nozzle crashes into the bed.

I'd just like to thank you for your videos, they are very in depth and explain the concepts very well.

Great Work Sir !! more of these definitely ! Happy Extruding

AWESOME !!! Just finished done my second printer !!!! AWESOME tutorial !!!!

Great video. Simple, tells the story. Thanks a lot for your work!

Very well done this change will help a lot. One suggestion I have a HP 22" HDMI monitor even at full screen when you demo Marlin with black background it is not quit readable. I like your directness.

Thanks for this video! Just got this setup on my original CR-10 with a SKR 1.3 and 2208's.

I have a strange problem, when I move the z-axis it moves both steppers at the same time but when I try to home Z only the left one moves.. what I'm doing wrong ??

Very helpful video mate. !

great job, but if you I afford ..... all printers that have two motorized Z axes need a mechanical link between the two worm screws (type artillery X1) In fact during the countless electric starts and stops in the use of the printer, the two motors inevitably are misaligned. This normally happens on a stepper motor, but in the Y and X axes we have only one motor so no problem. So if we want to be sure that the mecanic alignment of the two Z motors is maintained over time, there are two alternatives 1) link with strap as per X1 2) install two independent Z axis home point switches, if the motherboard allows it The first solution is the simplest, you can install at the base of the screws (just above the case that contains electronics) you will lose a centimeter in the total measurement Z, but this does not matter.

While auto-align is a nice feature, with 2mm lead and POM-nuts you mostly will not have any disalignment anyway, so it is a bit of overkill. Also the mechanic is not made for independend positions for both z-axis. It is staticly over-determinated. It works only by using tolerances of the mechanical parts. Any system with autoalign should be constructed with a staticaly determinated system. Much more interesting is auto-align with 3 steppers. Of course a bit of redesign of the z-mechanic is needed to move it by 3 leadscrews alowing the bed to be be adjusted )make the system staticaly determinated). But the printer would get real auto bed leveling, so no more manual bed leveling.

Hey Kris, Will this firmware work with any TFT display or only with the TFT35? I am looking to upgrade my Ender 5 plus with a SKR v1.4 turbo TMC2209 and a TFT70 v3.0

Hi Kersey I am having an issue with mine. After adding the 5th 2209 and switching the wires over for the z I flashed your firmware and now I am getting a bed leveling fault. The bltouch seems to be working when the printer boots up and when I test it in tft mode of works but then I home z the bed goes down and the bltouch stows and deploys several times and the bed never goes back up and I get a error message come up and it says stop called because bl touch error restart with m999. I’ve tried enter m999 and G29 nothing happens. Any advice ?

I am not sure I understand why mesh bed leveling cannot fully compensate for a tilted gantry. Wouldn't it just look like a tilted bed, compensate, and print normally?

Great video as always 👍 Thanks for sharing 👍😀

My printer just keeps setting Y value to max Y travel distance (resets Y home position) after first measurement point, than goes to third point, moving only in X direction. I'm so tired of that, it makes no sense..

can you upload the marlin source files that you edited ?( not the .bin file)

Want a video on how to configure jerk?

when doing Z alignment, on the right part of the bed, the probe goes way off to the left, almost to the middle of the bed. I don't know how to set it to go a little more to the right because it has plenty of space left, on the right side it goes right to the edge.

Would this be possible to do with the OG board and the silent version? There is one slot open for an extra extruder 🤔

How do you know which one is Z1 or Z2? Does it matter or is the firmware able to figure out which side it needs to adjust automatically?

After 7 months, I returned to this video because now I got a BL Touch and I have no idea how to make it work, was using a tronxy inductive probe till now. Will have to follow all your videos again just to figure it out.

Can you explain how you get the probe to go side to side but in the middle of the bed? You do not discuss this at all. Just simply that you plugged in and it worked, so did I miss a part?

how do i tell marlin which stepper is the second z axis, say i had a mainboard with more then 5 driver slots

i have tronxy x5sa pro 500 with marlin but my z offset not go below zero so how can fix that

Hey I'm on the latest version of marlin and I'm not seeing the # of z stepper motors in the adv config. I'm assume it's now calculatng it based on what motors you enable? I using 2 motors and uncommented z2 in the config. My issue is that no matter how I set the settings under auto align, it always probes 3 spots on the bed: middle left, middle, and bottom center roughly. I tried the manual coordinates and only had 2 sets of coords listed, yet it STILL probed 3 locations on the bed. It doesn't make sense. I just want it to probe the left and right side of the bed like it shows in the example. Do you know what's wrong?

Perfect! I was just looking into this.

Hey kris, i am wondering if i can use the z auto alignment with Arduino mega ?

Hello, great video, unfortunately I'm not able to get G34 function working, I have CR10S with V2.2 board which has extra E1 driver so it should be able to work as Z2. I set up everything in Marlin just like you showed in the video except for number of Z steppers (that line is missing in latest version of Marlin) and when I try to compile FW it shows me this error "TMC2208 or TMC2209 on Z2 requires Z2_HARDWARE_SERIAL or Z2_SERIAL_(RX|TX)_PIN." Is there any chance that you would know what am I missing there please? Thank you for answer :)

Hi Kersey. Have you had any issues with G34 making a mess of the Z offset I have found occasionally it gets it out of wack , I had the situation again today ran G34 then auto homed, then set a print running and found the nozzle was closer by around 1mm than it was on the last print which I didn’t use G34 Any clues

Hi, Im new to 3d printing and recently made this conversion. Both motors work great, Im running into an issue when homing, the Z-axis crashes into the hotend. Do you have any recommendations on what is causing this issue? I have checked all my connections. I tried changing z in probe settings but it doesnt seem to work.

Does it matter which of the left or right Z-stepper motors goes to which port on the board? More specifically the E3 Turbo board. I didn't see an answer in this video, or your E3 Turbo install video.

How do you get visual studio to display side by side like that?

I just updated using the firmware attached on my Ender 5 Plus that has a BigTreeTech GTR board, and changed enough stuff to get it running, but I can't get the Z to home. When trying to home the Z the bed goes down about 10mm and the probe triggers a couple of times then I can't raise the bed, but I could raise the bed before I pressed home for Z (XY homing works). I checked the endstops status and it there are all open except off course for the Z which is always triggered.

with dual z motors, how would you also use dual z endstops? I don't have a probe

hello sir. thanks alot for your help. i have afew question and please help me becuase i really need to know this. 1- We use "z step auto align" to apply equal pressure on the motors? And some motors do not carry more weight? 2- if we have quad z stepers, we have to uncomment this 5:57? define z_stepper_align_known_stepper_position 3- could you please tell me what is this: "z_stepper_align_known_stepper_position", i didn't understand it in video. 4- in marlin commented this: "requires triple stepper drivers" ......for quad stepper drivers we also have to use this "define z_stepper_align_known_stepper_position"??? Thanks alot for your help. looking forward to see your answer. thanks alot. good luck! :)

I tried this for the first time on my E5+ with SKR E3 Turbo. I get a read out at the end that says 1:2=0.697. So it's telling me that the left and the right are still out of alignment by 0.7mm. I repeated it multiple times and it gives me the same error. Tells me the z align algorithm isn't working right. It is using the two points showed in your video. I'm using a different firmware, so I'm blaming that for the time being unless I can gain a new understanding or I have time to dig through the sourcecode to see exactly what it is trying to do. I watch the screen and it seems to dance around the value, so it's not making small enough choices in trying to adjust the position of the z steppers. It is varying them, but it's playing "love me" "love me not" type games instead of getting closer. I only share this in case anyone had a similar experience. I'm using TM3D firmware. Interestingly enough, after a while I decided to just move the z axis rods independently by sight and feel. I was able to get it within 0.04mm by manually adjusting them and rerunning the G34 after that.

Hi ! Great footage ! BUT ! The head is not moving simmetrical from the mid point. How to set this up ? What means the line: Z_STEPPER_ALIGN_XY with the coordinates ? If i change the coordinates I get an error when compiling "point 1 is not reachable"... So hiw to change the coordinates to place the head to the most end of the bed on both sides ?

Awsome video, thanks for your help and time!!!!! I did it in an ANET A8 PLUS #ANET A8 PLUS

Thanks for the video, I tried to figure this out myself and missed the "requires 3 stepper drivers" part and was really confused about the X and Y coordinate stuff in the configuration, same configuration you used pretty much works great on my i3 mk3s~ clone with pinda2 sensor SKR1.3 Marlin 2.0 etc.

Hola , al intentar compilar Marlín me sale este error , me podrías ayudar . Marlin\src\gcode\calibrate\G34_M422.cpp:109:65: error: 'Z_STEPPER_ALIGN_ITERATIONS' was not declared in this scope; did you mean 'Z_STEPPER_ALIGN_AMP'? 109 | const int8_t z_auto_align_iterations = parser.intval('I', Z_STEPPER_ALIGN_ITERATIONS); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ | Z_STEPPER_ALIGN_AMP Marlin\src\gcode\calibrate\G34_M422.cpp:115:64: error: 'Z_STEPPER_ALIGN_ACC' was not declared in this scope; did you mean 'Z_STEPPER_ALIGN_AMP'? 115 | const float z_auto_align_accuracy = parser.floatval('T', Z_STEPPER_ALIGN_ACC); | ^~~~~~~~~~~~~~~~~~~ | Z_STEPPER_ALIGN_AMP Marlin\src\gcode\calibrate\G34_M422.cpp:160:44: error: 'G34_MAX_GRADE' was not declared in this scope 160 | float z_probe = Z_BASIC_CLEARANCE + (G34_MAX_GRADE) * 0.01f * SQRT(_MAX(0, magnitude2(0, 1) *** [.pio\build\LPC1768\src\src\gcode\calibrate\G34_M422.cpp.o] Error 1

#define Z_STEPPER_ALIGN_XY { { 20, 110 }, { 187, 110 } } how do we calculate these numbers? ITs not letting me compile until this is correct

I had a quick question. My Z motors only had a "Z" tag on both and not a "Z1 / Z2". I imagine it matters which goes to which side otherwise how would it know which side it is adjusting? Do you know (if looking at the printer head on) which motor is 1 or 2. ie left is one and right is 2 or vice versa. Thanks for the videos and firmware by the way they have been a major help.

where did you set the distance for the probe to stay inside the bed?

Hey , is there is auto alignment with Lerdge K🤔

Great info. Next time do a how-to of the bed skew compensation feature. Prusa enables it in their firmware. Vanilla Marlin has that capability too, but it's disabled by default.

Do you have the source for this build? I’d love to use it but I think I may need to make some minor changes for my build.

PSA tightening bed springs all the way for first level doesnt always work because on my sv01 the z bottomed out before bltouch hits the bed causeing my steppers to skip

Did you use it without any sensor like BL-Touch? I want to use it with a piece of paper to calibrate. Probe_manually not work

hi im trying this but i have a problem i can't seem to fix... after changing in marlin, when i control manually, when going down both Z's go down. but when going up only one goes up the other goes down? whats the problem here?

I am having issues with my bltouch on your firmwware. I am using 2209 steppers and flashed the firmware according to your file but when the screen boots up in tft mode it gives a auto bed level fail and when homing the z the bed goes down and flashes red / blue and never goes back up. The bltouch itself is working when testing it in the tft menu. Anyhelp would be appreciated. TIA

I am liking this change, after playing with it a bit, along with the Bed Visualizer plugin to octoprint I have a bed that is consistently nearly all green zone after probing. I did notice one thing about the firmware compile you did, however. The G34 probing and the mesh probing is unbalanced. The probe deploys MUCH closer to the right edge than the left edge.

Hello ! I have modified with TMC2209 and G34 is great but i have a problem with Z wobble and i want PID Bed but option is not activated, can you share the firmware source ? Thx !

When you print with that petsfang duct do you have to reduce fan speed? I have it and i find that when the fan kicks on to 100% on the forth layer then it just blows the filament away from the print and never stick

Hi Kris, this should work on creality silent board upgrade version 2.2.1 which does have 5 stepper drivers tmc2208 and E1 is unused just needs heat sink installed. Is there a way to reassign T1 2 Z 1 or Z 2? Is the process the same as SKR 1.4 and if not would you be able to do video on it so I could accomplish g34? I'm actually doing this on cr-10s V2 which has the same board

Had a question. I did everything correctly and have the Dual steppers going. I'm having a hard time leveling the bed manually. I screwed the four corners up as you stated, I heated everything up, did the Z axis auto align (worked great). However, I'm used to the button on the Ender Plus stock board for AUX leveling, just using a piece of paper to fine tune places on the bed. I can't seem to find a setting like that on this Marlin build. The closet thing is the leveling of the 4 corners and that doesn't help because I can get the front of the board up towards the nozzle (using the screw knobs), but the back of the board is maxed out. The ABL function is off, I feel like manually leveling is the better way to go. What do you think I'm doing incorrectly? Edited: looks like what I’m looking for is bed mesh leveling (points on the bed, paper under nozzle, turn knob to move the Z axis to fine tune each point) and the G28 command disables the mesh bed leveling..

I received my dual z-axis kit a couple of days ago and fortunately found this video while searching for instructions, so a big thank you from a new subscriber! I say fortunately, because the instructions I was looking for dealt with keeping the gantry level when both steppers were on the same driver (short answer: manually level every time your z-axis steppers are powered down). My new mainboard w/5 stepper drivers will be here in a couple of days. On a semi-related matter, what do you think about getting rid of the bed springs? I've had some run-to-run consistency problems (if I don't manually level the bed before *each and every* print) on my orange-spring equipped Ender 3, even with a BL-Touch and UBL. I've seen several suggestions to replace the bed springs with solid spacers, to eliminate the bed as a variable. I asked one of the folks who suggested this how much difference it made, and was told it made a significant difference.

how did you get the bltouch working with it as my bltouch works for the z alighn but wont bed level the probe moves to the far left does a probe then stops

Great video I was waiting for something like this. I have tried to do it on my core xy tronxy x5sa Pro printer with skr 1.4 turbo and TMC 2209 and after updating the firmware I go to try the z axis movement in increments of 0,1mm and 1mm for safety and they do a grinding noise every time they move. I can home X and Y ok but no Z. When I home Z something very strange happens they start moving in sincro at least they appear to me but after 2, 3 seconds the right motor Z1 move down more steps than the left Z2 motor causing the bed to warp so I guess that is the cause of the noise. What may be causing this? I have connected the right motor (z1) to ZMA connection of skr 1.4 turbo and left motor (z2) to E1M. I don’t use sensor less homing so I’m using physical x and y endstops. I have tried to change up the current until 800 but no change. I don’t know what else to do. I guess that the cause of only being able to move in one direction may be because until it does an auto home and triggers the inductive sensor its always at 0. Looking at pins skr 1.4 section I can find #define E1_STEP_PIN P1_15 #define E1_DIR_PIN P1_14 #define E1_ENABLE_PIN P1_16 #ifndef E1_CS_PIN #define E1_CS_PIN P1_01 I have tried to change the E1 for Z2 but to no avail… here you can find my marlin files so you can see all the configuration. I was using one driver (connecting the motors to ZAM and ZBM)to move the two motors until now without problems but having an extra tmc 2209 driver I wanted to try this. mega.nz/file/DeIxBaSR#xZCH0mTVW_rQuZlErJrHpVbGzRnkrhGXpNizqBP3BUU Greetings.

Hi Kris , im having issues with my set up which is identical to yours using your firmware. My prints freeze mid prints. Sometimes it prints and sometimes i have to cycle the printer on and off to restart, because the whole tft 35 screen freezes up with it? Any ideas . thank you

For us using 2x Z steppers allowing tilt of the X gantry, wouldn't you need to uncomment "Z_STEPPERS_ORIENTATION 0" to match the (0) 1,2 diagram?

Hey Kersey, thanks again for your help it's working on my ENDER5 Plus, so I tried to put it on my CR10S5, the bltouch is probing on left side then on the middle of my bed, not on the right as it's supposed to (my bed size is 510x510) I didn't changed the Z_STEPPER_ALIGN_XY so it was supposed to use the bed probe limits, any idea?

Is it possible to add an extra Z stepper motor to move my camera with the layer height to a Delta printer?

my bed is not perfectly flat, is it better not to use this feature?

I am somewhat confused by a reply . I have the SKR Mini e3 V2. I have added a second Z Stepper Motor to ZBM on the board. Will the Configuration.h and Configuration_Adv.h instruction be applicable? If not can you assist with what those changes need to be? These are running 2209 Drivers on an Ender 3 Pro. Thank you in advance.

Your videos are all great! I have almost the exact same setup and I'm very grateful that you provide the compiled files! One question I have is do you already have the bltouch offset adjusted to your hydra fan setup? Or is it setup for stock offsets? Thank you!

Can y stop by separate Z by stallguard feature? It will be nice to see stop each Z with sensitivity to prevent crush screw.

Thank you, great video as usual. Would have been nice to see it correct a crooked bed at the end tho :P

Really great video!

i am a bit puzzled with the video , what is actually making sure the two steppers are aligned is it the probe or the endstops

Maybe I missed it, but wouldnt you need 6 stepper drivers? by doing it this way, where is your stepper driver for the extruder?

Hey Kersey, thank you so much for all of this, I learned a lot ! Everything is working great but I think the probe offsets on your "Dual Z-Axis Firmware" are for your fan duct (X -52, Y -20, Z -3). I'm using the stock hotend/fan so when I auto-home, the BL touch is not at the center of my bed, I can change the probe offsets on my advanced settings menu, do you know what are the value for the stock hotend?

Flashed this firmware but getting TMC CONNECTION ERROR on my marlin home screen. Not sure what's going on but will try and trouble shoot.

On my new SKR 2, I have 5 * TMC2209's (drivers). The last two are listed for from 1 to 2 extruders (E0 and E1). Presumably the E1 (second extruder) driver is (for such a Z use) repurposed for use as Z2. My question is: Does Marlin automatically know/assume that E1 is being used as Z2 when the firmware changes are made? No "addressing" changes needed?

Do a great job, We do appreciate It

Did you have to change the pin definitions of the board to make E1 work like a Z or it already worked the way it is?

This is a fantastic function and I like that you brought this to the public eye. I would really like to use this on my E5+, but after multiple attempts to update with the .Bin file that you had graciously given to use, I cant load it. after a whole lot of searching forums, I have concluded that I have dropped my bootloader somehow. I have an E5+ with an SKR 1.4 Turbo and a TFT35. Sound familiar? I have purchased an Arduino UNO R3 and a ATMEL 51 AVR USB ISP ASP because that's what others have used. After reviewing the info that I had gotten my ideas from, I found that noone else was using the SKR 1.4 turbo, and it seems to be completely different. I thought I could figure it out but I've begun to realize that I'm out of my league. PLEASE HELP!!!!!

Kris, I had weird issues on probing point when it comes to touch screen UI. Leveling corner points from marlin screen looks correct, but the points from touch UI are different. So do 25 probing points. What about your firmware with TMC2208? Mine is TMC2209. I guess this is bug or error that not solved yet?

Nice, going to do this too 👍

installed the firmware on the ep5+ it works great but now im having a problem with the usb through the screen, it starts the print heats up and then eventually freezes usually within the first layer. the screen is unresponsive. any suggestions

So I know this is an old vid but I'm doing this know and I'm a bit confused with naming it Z2 in the firmware I would of thought you would of uncommented E1 cause that's where its plugged in at how does it know that the stepper in E1 is know Z2"? Is it process of elimination being the only one left?

This don't work in Marlin 2.1.1 anymore. There is no #defice NUM_Z_STEPER_DRIVERS setting anymore. How do i tell Marlin that i have 2 Z-stepper-drivers? In your case you plug the Z2 motor in E1 stepperdriver. Why do you tell Marlin in Configuration.h that Z2 is enabled, not E1? The last stepperdriver is E1 not Z2 or not? My printer has 2 printheads (2 extruders) on a single x-carier. So i would think that i must use this: #define X_DRIVER_TYPE TMC2209 //(for X) #define Y_DRIVER_TYPE TMC2209 //(for Y) #define Z_DRIVER_TYPE TMC2209 //(for Z1) #define E0_DRIVER_TYPE TMC2209 //(for Extruder1) #define E1_DRIVER_TYPE TMC2209 //(for Extruder2) #define E2_DRIVER_TYPE TMC2209 //(for Z2) Problem: When i set #define EXTRUDERS 2 (for 2 extruders) then in Configuration_adv.h the trinamic driver E0 & E1 are being activated. However the E2 (used for Z2) is not active, witch i need for Z_STEPPER_AUTO_ALIGN. But in Configuration.h stepperdriver E2 is active How do i turn on the E2 in Configuration_adv.h? Can anyone please help me? Thank you

HELLO VERY USEFUL I HAVE ANOTHER QUESTION FOR THOSE WHO DO NOT HAVE BLTOUCH AND IT IS POSSIBLE TO DO WITH 2 PHYSICAL ENDSTPO THANKS A LOT

Hello i ran your .bin file and your not using hybrid mode why?

Sweet printer

Could you possibly share the marlin project? The bin file works perfectly, but i wanted some extruder changes for my printer (bmg) and now my own firmware is not working with the bl touch :(

Connecting... Testing X connection... OK Testing Y connection... OK Testing Z connection... OK Testing Z2 connection... Error: All LOW Testing E connection... OK Printer is now online.

Hi Kris, Thank you for the Marlin side. I am building a printer with 3 Z axis and kindly want to know that, should we make any change on the #define DEFAULT_AXIS_STEPS_PER_UNIT line for the additional Z axis' ?

I have a big doubt now. Go for this method or buy closed loop gt2 and link both leadscrew....

I had started just looking into this with the skr pro. My right size z lead drops every once in a while without stepper power. Looking through the skr pro pinout.h file though I see only E0, E1, and E2 pins assigned. using E1 as the next z I am wondering if I will have to mess with the pin assignments.

bonjour super la video voila j ai une biqu b1 que j ai equiper d un double z ,elle possede la carte skr 1.4 ,pour l instant j ai brancher sur le deuxième port z donc meme steppers , j ai vais commander 5 steepers tmc 2209 , mon probleme j arrive pas a faire de modif de mon firmwar , il me met une erreur en compilant est ce possible de t envoyer mon firmware pour que tu puisse faire les modifs merci

Awesome video, I hope you will still planning to have a second extruder?

Why don't you get the th3studio solid bed mount kit it will always be level

Watching your video I really like the colour scheme that you've gone with on your printer. Can you explain how you got a Yellow LCD?