Skip to main content

Katapult Firmware

Katapult Firmware Instructions​

Tip

Katapult was originally named CanBoot and later renamed to katapult.

  • The Katapult firmware is a type of bootloader that can be used together with Klipper. After flashing via DFU or other methods, firmware can be updated with a single command.
  • Advantages: Quickly double-click the reset button or power cycle twice to enter the Katapult firmware, at which point the LED on the motherboard will blink.
  • Katapult firmware can only be used to flash firmware and cannot connect to Klipper!!!
  • Katapult firmware supports three ways to connect to the host computer, and the firmware for each method is independent.
    • CAN connection
      • Advantages: After compiling the Klipper firmware, it can be updated directly using commands, with strong anti-interference capability.
      • Disadvantages: The firmware compilation speed needs to be known in advance.
    • RS232 connection
      • Advantages: After compiling the Klipper firmware, it can be updated using commands, with very strong anti-interference capability.
      • Disadvantages: Firmware cannot be updated with a single command; manual entry into Katapult firmware is required.
    • USB connection
      • Advantages: After compiling the Klipper firmware, it can be updated directly using commands.
      • Disadvantages: Long data cables are prone to interference, which may cause disconnection.
Tip
  • SB2040_PRO_V3 supports CAN and RS232
  • Here, only CAN firmware is provided at 500K and 1M rates

Entering Flash Mode​

Tip

The left button is the RESET button, and the right button is the BOOT button

  • There are two ways to enter flash mode
  • First: With the motherboard completely powered off, hold the BOOT button, then connect one end of a TYPE-C cable that supports data transfer to the motherboard and the other end to your device.
  • Second: After connecting one end of a TYPE-C cable that supports data transfer to the motherboard and the other end to your device, hold the BOOT button, press the RST button, then release the RST button, and finally release the BOOT button.
Loading...

Flashing Firmware​

  • Katapult Firmware for SB2040 PRO V3
  • You can obtain the firmware via the following link:
Please note

The zip archive must be extracted before use.

  • Alternatively, download the complete repository via git (ensure the host machine has internet access):

  • For general systems

    cd && git clone https://cnb.cool/3dmellow/FLY-Firmware.git

  • For FLY host machine

    git clone https://cnb.cool/3dmellow/FLY-Firmware.git /data/FLY-Firmware
    ln -s /data/FLY-Firmware /root/FLY-Firmware

  • If the firmware package has already been downloaded, it is recommended to update to the latest version before proceeding:

    cd ~/FLY-Firmware && git pull
  • The previous repository is no longer maintained. To delete it, execute: 
    rm -rf ~/FLY_Katapult /root/FLY_Katapult
  • The firmware is located at
FLY-Firmware/ToolBoard/SB2040
  • Prepare a data cable with data transmission functionality
  • Download the firmware to the computer
  • Connect the BOOT jumper, or press and hold the BOOT button while connecting to the computer, then the RPI-RP2 disk will appear
    Loading...
  • Remove the BOOT jumper or release the button!!!
  • Copy the firmware to be flashed into it. Please note that only firmware with the UF2 file extension can be used!!! (Do not modify the file extension; it is ineffective)
  • Reference
    Loading...
  • After copying the firmware, the RPI-RP2 disk will disappear automatically, indicating that the firmware flashing is complete!

Verifying Firmware Startup​

  • If the firmware starts normally, the LED will blink
    Loading...
Loading...