How to Prepare Klipper Firmware for Kingroon KP3S Using Fluiddpi

Klipper is a 3D printer firmware. It helps your 3D printers to print faster and better. Today we are going to talk about how to prepare Klipper firmware for Kingroon KP3S 3.0 3D printer by using Fluiddpi.

* Please be noted the tutorial only applys to Kingroon KP3S with MCU STM32 F103 mainboard and MCU GD32F303 mainboard. The Kingroon KP3S with MCU STM32F407 version of mainboard does NOT apply to this tutorial.

Get Kingroon KP3S Mianbord with Klipper firmware flashed HERE.


To use Klipper, we need the help of Fluiddpi, it’s a powerful project like Octopi. It contains Klipper in its image, so you don’t have to download and install it from the beginning. Of course, we will show you a better plan on Kliiper soon, which is how to use it on Octopi. You can get all the information you need on

Fluiddpi for Klipper 

Step 1 - Flash Fluiddpi

First, visit to download the latest Fluiddpi image.

Flash Fluiddpi

Once you finished, use the Raspberry Pi Imager to flash it. Click “Choose OS”, scroll to the bottom, select “Use custom”, then choose the file you just downloaded. Then press keys to preset wifi(On Windows control shift x. On Mac comand shift x). If you don’t know how, please check our last tutorial on how to set up Octopi to print on your KP3S. Please enable ssh and remember the password. And the WIFI signal cannot be 5G.

After flashing the image, you can set your Pi up, our last tutorial will show you how. If you have an extra SD card, you can switch between Octopi and Fluiddpi, all you need to do is changing the SD card.

Step 2 - Update Fluiddpi

Power up the pi, wait for a while, then visit http://fluiddpi.local to go to Fluiddpi’s dashboard. Please make sure your computer and pi are at the same network. If you don’t have a WIFI adapter, you can use cable network to instead.

Fluiddpi’s dashboard

Scroll down to the bottom, click the gear icon, update everything to the latest, it will take some time.

Since Klipper has changed its configure rules recently, the old “printer.cfg” files you download is no longer working. So we will use the latest Klipper as a start, and next time we will show you how to config this version to print.


Step 3 - Prepare Klipper Firmware

Once you finished, proceed to the next step. Open terminal on your computer, enter following commands.

ssh pi@fluiddpi.local

Prepare Klipper Firmware

If this doesn’t work, you need to go find out the Pi’s IP address and use that instead of “fluiddpi.local”. For example, ssh pi@ Then you need to enter the SSH password.

After that enter the following command to config the firmware.

Mac Users:
cd ~/klipper/
export LC_ALL=en_GB.UTF-8
make menuconfig

Windows Users:
cd ~/klipper/
make menuconfig
Klipper config settings

Then you will enter the config settings. Here are what you need to do:

1.Enable extra low-level configuration options

2.Set the Bootloader offeset as 28 KiB

3.Set the “Micro-controller Architecture” as “STMicroelectronics STM32”

4.Set the Communication interface as “USART3 PB11/PB10”

5.Enter the last option, enter “!PC6, !PD13”, the. Press enter key

Then press Q and enter “yes”, after that, the setup is done.

flash klipper firmware 

After that, enter “make” to build the firmware. It will take some time. Once you see “klipper.bin”, you’re successful. Then enter the rest two commands to finish this step.

/scripts/ ./out/klipper.bin ./out/Robin_nano.bin

cp out/Robin_nano.bin ~/fluidd/

Klipper firmware

Next, go to the browser, visit “http://fluiddpi.local/Robin_nano.bin” .  You will get a bin file, put it into the SD card. You are ready to flash the Klipper firmware to Kingroon KP3S 3D printer.

Klipper firmware to Kingroon KP3S

Step 4 - Flash Klipper Firmware

Put the SD Card into KP3S, turn it on, the firmware should start to flash. Once you see “100%”, you are all set. Now you are ready to use Klipper Firmware on Kingroon KP3S. We will show you guys how to config Klipper to print on the coming blogs. 

After that, connect the printer with raspberry.  Then go to the Terminal, enter below command.

ssh pi@fluiddpi.local 

(Then enter password to login)

cd ~/klipper/ 

ls /dev/serial/by-id/*

Then copy the marked line, paste it to the note, you will use it later.

Kingroon KP3S Klipper Firmware

Step 5, Configuration

Go visit this link and download its file.

Kingroon KP3S Klipper Firmware

After that, unzip the file and go to http://fluiddpi.local/#/configure

Upload all the config files.

Klipper Firmware for Kingroon KP3S

Since KP3S use a Titan extruder, it is necessary to correct the microsteps from 64 to 32. Click to open the stepper.cfg, rewrite the microsteps to 32.

Kingroon KP3S Klipper Firmware

After that, click “save&restart”.

Next, open the printer.cfg, find the [mcu] area, overwrite the serial with the line we copied on the note. (Ours are /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0)

Klipper firmware of Kingroon KP3S

Then click “save&restart”. 

If you get below error.

Kingroon KP3S Klipper Firmware

Enter the following command:

cd ~/moonraker/scripts


Klipper Firmware for Kingroon KP3S 3D Printer

If it is still not working, open “moonraker.conf” and modify the server area as below: 



port: 7125


config_path: ~/klipper_config

log_path: ~/klipper_logs


temperature_store_size: 600

gcode_store_size: 1000


the Orignal look like following:



port: 7125

temperature_store_size: 600

gcode_store_size: 1000

config_path: ~/klipper_config

log_path: ~/klipper_logs

Kingroon KP3S Klipper Firmware

You can find the reference in

Kingroon KP3S Klipper Firmware

After that, you are all set.

Kingroon KP3S Klipper FirmwareNext, we are going to publish further settings and show you what Klipper can do.



Previous article FAQ of Kingroon KP5M 3D Printer
Next article Kingroon KP3S Mainboard Diagram


Judasc - junio 12, 2022

cero support for 407 MPU

Kingroon 3D Official - junio 9, 2022

@Sa Please make sure that your mainboard fits. If the firmware is right, but the flashing process is stuck in 100%, the mainboard should end with 407, you need to flash back to the stock firmware. If the mainboard fits, you need to update everything, follow the new steps, and try again.

Sa - mayo 4, 2022

Followed all the steps, but am unable to get KP3S to connect to my Raspi 3B+ with klipper.

Kingroon 3D Official - febrero 8, 2022

We would upload the related tutorial about KP5 soon, Pls wait a few times.

Kingroon 3D Official - febrero 8, 2022

Here is the touch.cfg

Kingroon 3D Official - febrero 8, 2022

The 303 mainboard is still fit for this tutorial, GD32F303 and STM32F103 use the same firmware.

Kingroon 3D Official - febrero 8, 2022

After installing the Klipper, the touchscreen will become black, you could control the printer by computer. The Klipper is possible on the KP5M, we would upload the related tutorial soon.
Here is an example printer.cfg file for the KP3S

Vladislav - febrero 1, 2022

I installed Klipper on KP3S. I liked how the printing went. I also have a KP5S printer. Can I get a printer.tsfg for KP5S?

Oliver - enero 17, 2022

Hello, I have ordered the 3D Touch Leveling Sensor and am trying to use it on my KP3S (February 2021).
I am missing the configuration of the bltouch.cfg for my Klipper. Anyone have a template?
The connectors are correctly plugged into the mainboard. Which sensor_pin and which control_pin do I have to specify?
thank you

ko - enero 14, 2022

When is 303 chip’s klippet setting method?

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