tip

SHT36/42 come from the factory without pre-flashed Katapult firmware for CAN connection
The CAN connected Katapult firmware for SHT36/42 has rates of 500K and 1M; you can flash it yourself if needed
Burning Katapult Firmware

Firmware Burning Instructions

How to Determine Which Firmware You Need

SHT36/42 can connect to the host computer via CAM
Burning CAN Firmware
- Advantage: If you flash the Katapult firmware, you can update the firmware without touching the motherboard and it supports bus connection
- Disadvantage: May cause errors such as homing timeout when used with KlipperScreen
- Tip: If you need to use CAN, confirm whether your host computer supports CAN and ensure it is paired with UTOC or a motherboard flashed with bridge firmware

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.