3MS/setup/bom/

[giscus[bot]]

3MS/setup/bom/

https://3dcoded.github.io/3MS/setup/bom/

[simplified-life]

Can I buy one of these extruders?
https://www.aliexpress.com/item/1005003217904544.html
https://www.aliexpress.com/item/1005003280660537.html
I'm just looking for something that is cheaper to buy/ship to my country as Amazon wants to double the price to send to Australia

[3DCoded]

Yes. As long as they support a standard NEMA17 stepper motor and can reliably move filament, they will work.

[simplified-life]

okay - thanks for this. I've gone with this dual extruder with two pneumatic connectors as I'll be locating mine outside a machine https://www.aliexpress.com/item/1005007422976778.html
For motors I've gone with this Nema 17 from Steppers Online 17HE19-2004S as it is recommended to go with filamentalist https://www.aliexpress.com/item/1005004731197516.html

[soleshoe]

Hi, i am wondering if i really need to use a dedicated board for this project, or if i could use empty steppers ports on the mellow fly board installed in my 2WD VZbot330 - and what issues it may imply

[3DCoded]

Hi @soleshoe ,

It depends on how many spare ports you have and how many filaments you want to use. I can create a configuration for you.

• Which board are you using? (there's a lot of different Mellow Fly's)
• Which stepper drivers are you using?
• Which stepper ports do you plan on using for the 3MS?

Once you answer those questions, I can create your configuration!

[soleshoe]

Hi!

i have a Fly Super ∞ 1.3
I would use 2209 for mmu unless 5160 provides any advantages
Free ports are visible on attached picture

[soleshoe]

Board on the picture was 1.1 but replaced with 1.3 after bad connection from me

[3DCoded]

Hi @soleshoe ,

Thank you for providing that information. Attached is your mmu_hardware.cfg

The TMC2209 doesn't provide much of an advantage over 5160's for MMU's, so I created the config around the 2209's. The config is based off the official Klipper config here.

To install your new config, follow these instructions.

Let me know if there's anything else I can help you with!

mmu_hardware.cfg.txt

[soleshoe]

Project first steps achieved (mellow fly free slots used as first intention, with enclosure inserted spools)

[soleshoe]

Hey, i found an interesting device which i a mwondering if it could replace stepper motor/extruder, wouldn't it be a better solution ? https://fr.aliexpress.com/item/1005007265643359.html

[3DCoded]

Hi @soleshoe ,

That looks interesting, however, it doesn't use stepper motors, which are required for the 3MS (or any MMU). The 3MS needs to be able to synchronize to your printer's extruder, and the DC motors used in the linked product aren't precise enough to do so. Also, Klipper has very limited support for DC motors.

[soleshoe]

acutally there's no synchronisation involved because the device detects the filament traction then push the filament to help main extruder (replicating movement if I understood specs correctly). What is not clear as far as I know, is if it is possible to reverse device traction (unless it also detects the retraction then pull the filament accordingly. If it does this, the key point would be to make the device stops the retraction when switch point is reached I guess - which could be complicated if using several of these - maybe adding a main filament detection switch would resolve the problem). I have contacted mellow support for more information, waiting for their feedback.

if it just replicates main extruder movement in any direction, pushing or retracting filament the exact distance needed should be manageable if adjustable.

[3DCoded]

Interesting. It might be usable if there's a way to trigger the autoload filament function (and reverse it) with Klipper. However, it would require custom software.

[soleshoe]

Interesting. It might be usable if there's a way to trigger the autoload filament function (and reverse it) with Klipper. However, it would require custom software.

It should be, i have orbiter 2.0 with filament detector option and it’s really cool, if you push the new filament inside orbiter2 it triggers filament insertion for a few seconds using customized macro (including pre-heat)

[soleshoe]

ok, I finally received Mellow response, and it is a NoGo, the device can't pull the filament.

[Tg69]

think this could work with a klipper flashed 4.2.2 creality board as the extra mcu? would be running off a SV08 printer as the main mcu

[CoreXYForge]

That is the hardware config file. What should I use for the MMU.cfg file?

[CoreXYForge]

sorry, wrong comment to reply to.

[hitman01560]

hello @3DCoded! I have a spare 4.2.2 board too that I could use to build your 3ms unit. so the pins you gave above are for mmu_hardware.cfg right? what about mmu.cfg please? thank you for the help and the awesome work!

[3DCoded]

Hi @hitman01560 ,

You only need the mmu_hardware.cfg gear section I provided. mmu.cfg only defines the serial path. The aliases defined there aren't used.

Please follow the instructions here to install the gear config.

[hitman01560]

@3DCoded thank you! I missed that info, sorry. Keep up the good work, your project is awesome!

[CoreXYForge]

Could you add a CNC Shield v3 as a mainboard option? You can flash klipper to it, and have it work just fine without a metal box PSU, so it would bring the cost down ~$25-30. I have one with working steppers, and i'm currently waiting on the aluminum extruders to arrive. There is a project quite similar to the 3MS that has a pin out already (https://github.com/pannonbeard/klipper_multi_color?tab=readme-ov-file). Now that I (finally) have a machine running klipper, I have given up on my chameleon (sorry bill) and have moved on to making my own. It's like a fusion between this, the 3Dchameleon, and this: https://www.youtube.com/watch?v=s264WtPAhXw. I will post a make on printables when i'm finished :)

Since this is a budget AMS project, I think the Shield v3 could work nicely.
Some links that may be helpful:

https://github.com/pannonbeard/klipper_multi_color?tab=readme-ov-file
https://www.circuito.io/blog/arduino-uno-pinout/
https://wiki.keyestudio.com/Ks0160_keyestudio_CNC_Shield_V3
https://github.com/gwisp2/klipper-drawbot?tab=readme-ov-file

[CoreXYForge]

This is also helpful: https://www.reddit.com/r/klippers/comments/17uh595/flashing_klipper_on_an_arduino/

[3DCoded]

Hi @3DCreator-droid ,

Thank you for all the links. Below is your mmu_hardware.cfg gear section.

Installation

mmu_hardware.cfg

[stepper_mmu_gear]
step_pin : mmu:PD2
dir_pin : mmu:PD5
enable_pin : !mmu:PB0
rotation_distance : 25
microsteps : 16

[stepper_mmu_gear_1]
step_pin : mmu:PD3
dir_pin : mmu:PD6
enable_pin : !mmu:PB0
rotation_distance : 25
microsteps : 16

[stepper_mmu_gear_2]
step_pin : mmu:PD4
dir_pin : mmu:PD7
enable_pin : !mmu:PB0
rotation_distance : 25
microsteps : 16

[stepper_mmu_gear_3]
step_pin : mmu:PB4
dir_pin : mmu:PB5
enable_pin : !mmu:PB0
rotation_distance : 25
microsteps : 16

[CoreXYForge]

I may do something with the chameleon conversion later, since I think that you could reuse the mk8 drive gears and spring-pushed bearings for an Extruder design, Instead of buying new Creality extruders. It seems like a waste if you're just reusing the motors.

[CoreXYForge]

Where should I get the MMU.cfg file?

[3DCoded]

Where should I get the MMU.cfg file?

The mmu.cfg file is automatically generated by Happy Hare when you install it.

[DocTarboro]

will this system work with a direct drive extruder tool head? Specifically the Creality Sprite Pro?

[3DCoded]

Hi @DocTarboro ,

Yes. The 3MS will work with any 3D printer running real Klipper. I use mine on my direct-drive Stealthburner head.