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tip
  • SHT36 PRO comes with a pre-flashed Katapult firmware for CAN connection at a rate of 1M
  • The Katapult firmware connected via CAN to SHT36 PRO has rates of 500K and 1M; users can flash it themselves if needed
  • Katapult Firmware Burn

Firmware Burning Instructions

  • SHT36 PRO can use CAN connection method to connect with the host computer
  • CAN needs to be connected using XT30(2+2)-F
  • Below is the appearance of the XT30(2+2)-F data cable
Notice
  • Mainboard firmware burning needs to be done through Katapult to burn Klipper
  • If the mainboard has already been flashed with Katapult, there is no need to perform the final Katapult firmware burn, as that is just a precaution in case the Katapult firmware on the mainboard was not successfully burned
  • You can quickly press reset twice to see if an LED on the mainboard blinks, indicating that the mainboard has entered Katapult firmware

CAN Firmware Compilation​

  • SHT36 PRO can only use CAN method to connect with the host computer
  • CAN Firmware Burn
    • Advantages: If the Katapult firmware is installed, you can update the firmware without touching the mainboard and it supports bus connection
    • Disadvantages: May cause errors such as homing timeout when used together with KlipperScreen
    • Tip: If you need to use CAN, make sure the host computer supports CAN and that it needs to be paired with UTOC or a mainboard with bridging firmware installed

Katapult Firmware Description​

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.