Klipper - Ender 3 - SKR Mini E3

This is a small setup guide for the Ender 3 with klipper
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🔧 Hardware & Software

• Ender 3 - Pro (2020)
  • Board: BIGTREETECH SKR Mini E3 V3.0
  • Hotend: Creality Spider Hotend
    • Cooling Duct for Stock Fan: Printables - Spider cooling duct
  • Autoleveling: BLTouch (:construction: in progress!)

• Raspberry Pi 3 - Model B
  • 16 GB SD Card

• MainsailOS (Klipper)

🔨 Hardware Setup

Docu

• SKR Mini V3.0 Pins

🚧 Coming soon

💻 Software Setup

MainsailOS (Klipper)

1. Download and install the latest Raspberry Pi Imager
2. Flash MainsailOS
   • OS > Other specific-purpose OS > 3D printing > MainsailOS(32 bit recommend)
   • Settings:
     • Activate SSH
     • Add wifi credentials
     • (optional) Change hostname (Default: http://mainsailos(.local))
3. When the writing has finished successfully, remove the SD card and insert it into your Pi

⚠️ The first start of MainsailOS will take some time to expand your file system. The larger the SD card, the longer the first start-up process will take. (16GB = ~ 5 min)

✅ As soon as the boot process is finished, Mainsail should be available at http://mainsailos.local or http://mainsailos. Replace mainsailos with the hostname you may have set when you flashed the image.

Flash Ender 3

1. Connect remote to your pi with SSH

ssh [user]@[ip from pi]

2. Run menuconfig

cd ~/klipper 
make menuconfig

[*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32)  --->
    Processor model (STM32G0B1)  --->
    Bootloader offset (8KiB bootloader)  --->
    Clock Reference (8 MHz crystal)  --->
    Communication interface (USB (on PA11/PA12))  --->
    USB ids  --->
()  GPIO pins to set at micro-controller startup

3. Exit (Q) and save the configuration
4. Run make to create a klipper.bin file in klipper/out

make

• ℹ️ My firmware bin : /files/firmware.bin

5. Copy this file to a local SD card and rename it to firmware.bin. There are different ways:

   • with scp in terminal

     scp [user]@[ip from pi]:~/klipper/out/klipper.bin [path SD card]/firmware.bin
     

   • with WinSCP
   • copy the file to config directory and download it with MainsailOS GUI (Menu > Machines)

     cp ~/klipper/out/klipper.bin ~/printer_data/config/firmware.bin
     

   ⚠️ SD Format: FAT32

6. Insert the SD card into the switched off printer

7. Power on the printer (the display should show nothing)

8. Wait 1 min and power off the printer, remove the SD card and connect the raspberry pi with USB

✅ if it was successful the file FIRMWARE.CUR should be on the SD card

Configurate Klipper