tip

• The SHT36 LIS3DH comes pre-programmed with the Katapult firmware for CAN connection at a rate of 1M
• The SHT36 LIS3DH CAN-connected Katapult firmware has rates of 500K and 1M, and can be programmed by yourself if needed
• Katapult Firmware Burn

Firmware Burn Instructions

• The SHT36 LIS3DH can only connect to the host computer via CAN
• CAN needs to be connected using XT30(2+2)-F
• The following is the data cable style of XT30(2+2)-F
  

Notice

• Mainboard firmware burn needs to be done through Katapult to burn Klipper
• If the mainboard has already been burned with Katapult, there is no need to burn the Katapult firmware at the end

How to determine which firmware you need

• The SHT36 LIS3DH can connect to the host computer using the following methods
• CAN Firmware Burn
  • Advantages: If you have burned the Katapult firmware, you can update the firmware without touching the mainboard, and it supports bus connection
  • Disadvantages: It may cause errors such as homing timeout when used together with KlipperScreen.
  • Note: If you need to use CAN, make sure the host computer supports CAN, and you need to pair it with UTOC or a mainboard with a bridge firmware

Katapult Firmware Description

tip

Katapult was originally named CanBoot, and later renamed to katapult.

• Katapult firmware is a type of bootloader that can be used in conjunction with Klipper. After burning the firmware using methods like DFU, you can use commands to update the firmware with one click.
• Advantage: Quickly double-clicking the reset button or quickly cutting power twice will enter the Katapult firmware, at which point there will be an LED flashing on the mainboard.
• Katapult firmware can only be used to burn firmware and cannot connect to Klipper!!!
• Katapult firmware supports three connection methods for connecting to the host computer, and the firmwares for these three methods are independent of each other.
  • CAN connection
    • Advantage: After compiling the KLIPPER firmware, you can directly update the firmware using a command, and it has strong interference resistance.
    • Disadvantage: You need to know the firmware compilation rate in advance.
  • RS232 connection
    • Advantage: After compiling the KLIPPER firmware, you can update the firmware using a command, and it has very strong interference resistance.
    • Disadvantage: You cannot use a command to update the firmware with one click; you need to manually enter the Katapult firmware.
  • USB connection
    • Advantage: After compiling the KLIPPER firmware, you can directly update the firmware using a command.
    • Disadvantage: A long data cable is prone to interference, which may lead to disconnection.