K2 Plus Cartographer Mount, Shroud and cable chain cover for split installation

Summary:

This is my version of the cartographer mount and shroud to install the cartographer PCB apart from the coil board. I wanted to get rid of the spacers in the y-axis which are needed for the regular installation. Because of the PCB being placed at the top in a new cable chain cover, there is enough space to remove the y-axis spacers.

Therefor I remixed the shroud of @AnHe and shortened the front to match the new coil bord layout. I also made remixed versions of his mounts and removed the cable guides. But his original versions could also be used.

For the cable chain cover I made a complete rebuild of the cover of @Robertoooo_2988774 and attached a mount for the cartographer PCB. The guide for the bowden tube was also redesigned so that this part could be printed without supports.

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08.04.2025:
I've added a new version (v5) of the cable chain cover, which is chamfered at the back to give the cable chain a bit more room when the print head moves to the back left of the printer. 

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26.04.2025:
I've added a new version (v7) of the cover and the lid, which has a slightly bigger width to give the PCB a bit more room and also has some openings for air circulation. I also redesigned the guide for the bowden tube. The lid version 7 has to be used with this cover!

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01.05.2025:
I've added a new version (v9) of the cover, in which an USB-C connector could be mounted. This makes it possible to use a standard USB-C cable (0,5m length, angled plug) in combination with an USB-C extension cable for the Carto.
The cover has also a lead-through besides the USB-C connector to secure the plug of the USB-C cable with a zip tie (max. 2,5mm width, better 1,8mm).
I updated the BOM and assembly sections below for this version. The lid version 7 still fits for this cover and has to be used!

A more detailed description could be found in my other model (no Carto split install) here:
https://www.printables.com/model/1277286-k2-plus-cable-chain-guide-with-usb-c-connector-for

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!! Disclaimer: 
I made these models to improve my printer and use it at my own risk but I wanted to share them because I think others may find them usefull too. For this reason I am not responsible for any damages that my occour if these models are used. If I detect any flaws or issues, I will try to update the models and replace them with improved ones. !!

Print settings and material:

I printed mine in ABS and used 0.2mm layer hight, 3 wall lines and 40% infill.
The mount and shroud will need support, the other two parts not.

BOM:

Mount and shroud:

As the original versions the following will be needed:

• 2x M2.6x20 self tapping screws
• 4x 6x3 neodym magnets
• 2x M3 heat inserts (for the heat insert version of the mount)

Cable chain cover:

• 2x M2 heat inserts
• 2x M2x5 cap head screws
• The following parts are only needed for version 9:
  • 1x USB-C connector cable 4 pin, e.g.:
    https://de.aliexpress.com/item/1005007642773280.html
    (I used a pigtail version and crimped the JST PH 2.0 connector by myself. These cables are also available with pre crimped connectors but I think they are a bit to long)
  • JST PH 2.0 connector (for pigtail cables)
  • Optional: Cable sleeve and shrink tube
  • 0,5m USB-C cable, e.g.:
    https://de.aliexpress.com/item/1005007872765495.html
  • Any USB-C to USB-A extension, long enough to reach the USB connector at the side of the K2
  • Zip ties (1,8mm width)

Cartographer:

• 4x wires (about 200mm long, I used silicone wires) or
• Optional: 2x JST-XH 2 pin headers + 2x JST-XH 2 pin connectors for the wires (I used pre-crimped ones)
• Optional: Some heat shrink tube to hold the 4 wires together

Assembly:

Cartographer:

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Cable chain cover v3, v5 and v7 (for v9 read below):

There are different versions of the cartographer available. In the original version of the installation the right angled one is used. This is also the version prefered to be used here. If the flat pack version is used there are some more things that have to be taken into account.

Right angled version:

The both pin headers which connect the PCB to the coil board have to be unsoldered and the wires have to be soldered instead. 

!! Important: See the wiring diagram in the pictures for the right order. !!

I soldered 2 JST-XH 2 pin headers on the coil board and soldered pre crimped wires with 2 pin JST-XH connectors on the other side directly to the PCB. Because of the little space in the PCB mount the direct soldered wired are highly recommended, I don't think there is enough space for pin headers. The JST-XH version is fully optional, the wires could also be soldered directly to the coil board.

Flat pack version:

This version comes with completely unsoldered connectors/pin headers, so there is no unsoldering required.

The connection of the PCB to the coil board could be made like described in the right angled version above, but additionally the 4 pin header has to be soldered to the PCB. Important, the pin header has to be placed an the back side of the PCB and the pins have to be soldered on the top side (where the STM32 chip is) - like the right angled version…

!! Very important: The USB cable that comes with the flat pack version has to be repinned. The +5V and GND pins (red and black wires) have to be switched and also the two data pins (green and white wires). !!

After the soldering is done, place the PCB in the mount and mount the lid.

Next, disconnect the bowden tube and replace the original cable chain cover with the custom one using the original screws. Then route the bowden tube through the arm of the cover.

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Cable chain cover v9:

This is a more advanced version for the installation of the Carto where more wiring and soldering is needed, but this makes it possible to use a standard USB-C cable to connect the Carto. As mentioned above in my edit from 01.05.2025, more detailed information and some photos can be found in my other model linked there.

To use v9 of the cover, a completely unsoldered PCB is needed, so I would suggest to use the flat pack version of the Cartographer.

A note before the assembly. All wires now have to be routed through the gap between the cover and the PCB holder and have to be wired through from the back side of the PCB (so the solder points are then on the top side - the side with the two STM32 chips). The space is quite low in there but it is enough for the eight wires.

First press in the USB-C connector and shorten the wires so that they are long enough to reach the four solder points on the PCB (where normally the JST connector is placed). The USB connector is a bit loose in the cover after pressing it in. This is ok for me. If it bothers you, you could make the mounting hole a bit smaller.

Then solder them to the PCB. Consider the correct order of the wires so that the USB connection works!

Afterwards solder the four wires for the coil board to the PCB. The other end of the cables could be processed like described above in v3, v5 oder v7. As at the USB wiring, consider the correct order of the wires, otherwise it will not work!

Next place the PCB in the mount, route all the wires through the gap and mount the lid.

After that, disconnect the bowden tube and replace the original cable chain cover with the custom one using the original screws. Then route the bowden tube through the arm of the cover.

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Config updates:

Because of the missing spacers in the y-axis the Klipper config should be updated, otherwise the mesh starts to close to the front edge of the bed.

Add the following line to the [bed_mesh] section in custom/overrides.cfg just below the “probe_count” entry:

mesh_min: 10,15

Links to the original models:

• Original version of @Stranula
• Remix of @AnHe
• Original cable chain cover of @Robertoooo_2988774

Link to an alternative version of me, where the PCB is positioned above the coil board:

https://www.printables.com/model/1277242-k2-plus-cartographer-mount-and-shroud-custom-pcb-p