Neptune 4 pro Cartographer / Beacon mounting bracket

This mount is attached to the back of the Neptune 4 Pro toolhead (Probably compatible with other Neptune 4 printers, but never tested). It uses the original mounting hardware and clips in on the mounting holes for the part cooling fan. It provides extra stability to the probe compared to other models, which makes both the probe and the ADXL345 more accurate.

IMPORTANT:

The bed scanners are attached to the back of the toolhead, this prevents the usage of the auxiliary fan. This must be removed or distanced with thick spacers. 

The toolhead cover could be used, bus it will need some bending, I recommend just leaving it off.

BoM:

• 2 m3 threaded inserts
• 2 short M3 screws (Make sure the head is small, DIN912 will not work)
• Cartographer or Beacon bed scanner

Disassembly of the toolhead:

• Take the belt tensioner on the x-axis off.
• Disconnect the belt from the toolhead from the back.
• Disconnect the cable from the top of the toolhead.
• Roll the toolhead off the axis to remove it.
• Make sure to remove the auxiliary fan, or the bed scanner will hit it.
• Remove the toolhead cover.
• Remove the inductive probe from the toolhead (Detach the cable from the toolhead board also).

Install:

• Melt the 2 threaded inserts into the 2 bottom holes of the mounting bracket, these will be the mounting points for the bed scanner.
• Slide the mounting bracket on the toolhead from left to right (seem from the back of the toolhead) It will clip into the fan holes first, then slid to the right so the screw hole lines up.
• Use the screw from the original inductive probe to attach the bracket securely.
• Use 2 M3 screws to attach the bed scanner to the mounting bracket.
• Slide the toolhead back onto the X-axis and connect the cables to both the toolhead and the bed scanner.
• Attach the belts to the toolhead and put the belt tensioner back in place.
• You can route the cable the side of the toolhead as seen in one of the pictures, the route it through the strain relief bracket at the top of the toolhead to prevent stresses on the cable.

If there is any confusion, I have put a full assembly in the download section.

Toolhead model was posted by @rah_osg from the ELEGOO discord server.

Cartographer probe model was posted by @RichardTHF on Github.

Print settings:

The print is optimized to be printed on this side without any supports:

I myself printed it in 100% infill though it is probably not necessary. In ABS it weighed about 14 grams total. Use a rather high temp material such as ABS or ASA, you could probably get away with PETG, but I do not know if it might warp in the future. I would stay away from carbon fiber reinforced materials, because the fibers are conductive and might mess with the probe. Brims are recommended.

Firmware install:

Never tested for sure, but you probably would need a more open version of klipper then the elegoo stock firmware. I currently have Opennept4une installed.

• X-offset = 0mm
• Y-offset =  23,84mm
• Follow the documentation on : https://docs.cartographer3d.com or https://docs.beacon3d.com