Skip to main content
Tip
  • The SHT36 LIS3DH comes pre-flashed from the factory with Katapult firmware for CAN connection at a rate of 1M
  • The Katapult firmware for SHT36 LIS3DH CAN connection supports rates of 500K and 1M, and can be re-flashed as needed
  • Katapult Firmware Flashing

Firmware Flashing Instructions

  • The SHT36 LIS3DH can only connect to the host computer via CAN connection
  • CAN requires using an XT30(2+2)-F connector
  • Below is the style of the XT30(2+2)-F data cable
    Loading...
Important Notes
  • Mainboard firmware flashing requires using Katapult to flash Klipper
  • If you are sure the mainboard already has Katapult flashed, there is no need to proceed with the final Flashing Katapult Firmware section

How to Determine Which Firmware You Need​

  • The SHT36 LIS3DH can be connected to the host computer using the following method
  • CAN Firmware Flashing
    • Advantages: If Katapult firmware is flashed, firmware updates can be performed without touching the mainboard, and it supports bus connection
    • Disadvantages: When used together with KlipperScreen, errors such as homing timeout may occur
    • Note: If you need to use CAN, ensure the host computer supports CAN and requires the use of a UTOC or a mainboard flashed with 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 flashing via DFU or similar methods, one-click firmware updates can be performed using commands.
  • Advantages: Quickly double-press the reset button or power cycle twice to enter Katapult firmware, during which the LED on the motherboard will blink.
  • Katapult firmware can only be used to flash firmware and cannot connect to Klipper!!!
  • Katapult firmware supports three methods for connecting to the host machine, with each method’s firmware being independent of the others:
    • CAN connection
      • Advantages: After compiling the Klipper firmware, it can be updated directly using commands; strong anti-interference capability.
      • Disadvantages: The firmware compilation speed must be known in advance.
    • RS232 connection
      • Advantages: After compiling the Klipper firmware, it can be updated using commands; very strong anti-interference capability.
      • Disadvantages: One-click firmware updates via commands are not possible; manual entry into Katapult firmware is required.
    • USB connection
      • Advantages: After compiling the Klipper firmware, it can be updated directly using commands.
      • Disadvantages: Long data cables are prone to interference, potentially causing disconnection.
Loading...