Skip to main content
tip
  • The Katapult firmware pre-installed with the CAN connection on ERCF has a rate of 1M.
  • The Katapult firmware connected via CAN to ERCF can have rates of 500K and 1M; you can burn it yourself if needed.
  • Burn Katapult Firmware

Firmware Burning Instructions

  • ERCF can use CAN connection method to connect to the host computer.
  • CAN needs to be connected using XT30(2+2)-F.
  • Below is the XT30(2+2)-F data cable style.
Notice
  • The main board firmware burning needs to be done through Katapult to burn Klipper.
  • If you are sure that the main board already has Katapult burned, there is no need to do the last step of burning the Katapult firmware; this is just a precaution in case the Katapult firmware was not successfully burned onto the main board.
  • You can quickly press reset twice and check if an LED on the main board is blinking; if it is, it indicates that the main board has entered the Katapult firmware.

How to Determine Which Firmware You Need​

  • ERCF can use the following methods to connect to the host computer.
  • CAN Firmware Burning
    • Advantage: If you install the Katapult firmware, you can update the firmware without touching the main board, and it supports bus connections.
    • Disadvantage: It may cause errors such as homing timeout when used with KlipperScreen.
    • Note: If you need to use CAN, ensure that the host computer supports CAN and that it is paired with UTOC or a main board with bridge firmware installed.
  • USB Firmware Burning
    • Advantage: If you install the Katapult firmware, you can update the firmware without touching the main board, although if you are using SD card or DFU flashing, you still need to update the firmware as usual, and the communication is reliable and stable.
    • Disadvantage: Multiple USB devices may affect data transmission.

Katapult Firmware Instructions​

tip

Katapult was originally named CanBoot and was later renamed.

  • Katapult firmware is a type of bootloader that can be used in conjunction with Klipper. After being flashed using methods like DFU, you can use commands to update the firmware in one click.
  • Advantages: Double resetting or quickly cutting power twice will enter the Katapult firmware, and the pre-configured LED will flash; if not configured, it won't flash.
  • The Katapult firmware can only be used for flashing firmware and cannot connect to Klipper!!!
  • There are three ways to connect the Katapult firmware to the host machine:
    • CAN connection
      • Advantages: After compiling the KLIPPER firmware, you can directly update the firmware using commands.
      • Disadvantages: You need to know the firmware compilation rate in advance.
    • RS232 connection
      • Advantages: After compiling the KLIPPER firmware, you can update the firmware using commands.
      • Disadvantages: You cannot update the firmware in one click using commands; you need to manually enter the Katapult firmware.
    • USB connection
      • Advantages: After compiling the KLIPPER firmware, you can directly update the firmware using commands.