Hi everyone!

I wanted to share my experience with the Creality Ender-3 V3 SE + Nebula Smart Kit, because I spent quite some time getting everything working properly.

My printer is an Ender-3 V3 SE with the C13 motherboard.

The problem

Originally, my printer was running Marlin, and the G-code I was using was also generated for a Marlin-based setup.

After installing the Nebula Smart Kit, I decided to move the printer to Klipper.

The important part was that we couldn't simply treat it as the same Marlin setup. The printer configuration and the way Klipper handles the commands needed to be taken into account.

What I changed

The main change was moving from:

Marlin → Klipper

Then I adjusted the printer configuration and the slicer settings for the new Klipper setup.

For my V3 SE, I ended up using:

• Ender-3 V3 SE
• C13 motherboard
• Nebula Smart Kit
• Klipper
• Maximum acceleration: 2500 mm/s²
• Maximum speed: 180 mm/s

I deliberately started with reasonable values instead of trying to run the printer at extreme speeds immediately.

Testing

After getting the Klipper setup working correctly, I started testing the printer.

The result was much better and more stable.

I even tested increasing the printing speed to 150%, and the printer handled it very well.

That was the point where I considered the setup finally working properly.

My recommendation

If you have an Ender-3 V3 SE C13 and are trying to use the Nebula Smart Kit, don't assume that a Marlin G-code/setup will behave exactly the same after moving to Klipper.

The transition from Marlin to Klipper was an important part of getting my printer working properly.

For my machine, 180 mm/s maximum speed and 2500 mm/s² acceleration have worked very well.

Also, be careful when using guides made for the C14 revision. My printer is C13, so I would not blindly copy C14 configurations onto a C13 machine.

I'm sharing this because I know there are other V3 SE owners trying to get their Nebula setup working properly.

If anyone has a C13 V3 SE and wants to know exactly what I changed during the Marlin → Klipper conversion, I'll be happy to share the configuration and the steps I followed.

Hopefully this helps someone else save a few hours of troubleshooting! 🔧🖨️