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tip
  • The ERCF V2 comes with a Katapult firmware pre-installed for CAN connection at a rate of 1M.
  • The Katapult firmware for the ERCF V2 CAN connection operates at rates of 500K and 1M; you can burn it yourself if needed.
  • Burning Katapult Firmware

Firmware Burning Instructions

  • The ERCF V2 can connect to the host machine via two methods: RS232 and CAN.
  • Both RS232 and CAN require the use of XT30(2+2)-F for connection.
  • Below is the appearance of the XT30(2+2)-F data cable.
Notice
  • The mainboard firmware needs to be burned through Katapult burning Klipper.
  • If you are sure that the mainboard has already been burned with Katapult, there is no need to perform the final Katapult firmware burn; this is just a precaution in case the Katapult firmware burn on the mainboard was unsuccessful.
  • You can quickly press reset twice to see if a LED on the mainboard blinks; if it does, it indicates that the mainboard has entered the Katapult firmware.

How to Determine Which Firmware You Need​

  • The ERCF V2 can connect to the host machine using the following methods.
  • CAN Firmware Burn
    • Advantages: If you have installed the Katapult firmware, you can update the firmware without touching the mainboard, and it supports bus connections.
    • Disadvantages: Using KlipperScreen together may cause timeouts or other errors.
    • Tip: If you need to use CAN, make sure your host machine supports CAN and that it is paired with UTOC or a mainboard with bridging firmware installed.
  • RS232 Firmware Burn
    • Advantages: No special software is required, communication is reliable and stable.
    • Disadvantages: To reflash the firmware, you need to enter manual DFU mode or double-click RST to enter Katapult to update the firmware.
    • Tip: It requires G2T or UTOR to be used.
  • USB Firmware Burn
    • Advantages: If you have installed the Katapult firmware, you can update the firmware without touching the mainboard. If using an SD card or DFU to flash, you still need to follow the original method to update the firmware, communication is reliable and stable.
    • Disadvantages: 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.