tip
- The SHT36 V3 is shipped with the Katapult firmware connected via CAN at a rate of 1M.
- The Katapult firmware connected via CAN on the SHT36 V3 has rates of 500K and 1M; it can be burned independently if needed.
- Katapult Firmware Burning
Firmware Burning Instructions
- Both firmware compilation and burning require an upper computer.
- The SHT36 V3 can connect to the upper computer via RS232 or CAN.
- RS232 and CAN need to use
XT30(2+2)-F
for connection. - Below is the appearance of the
XT30(2+2)-F
data cable:
Notice
- The mainboard firmware burning needs to burn Klipper through Katapult.
- If you are sure that the mainboard has already been burned with Katapult, there is no need to perform the last Katapult firmware burning, as that is just a precaution in case the Katapult firmware burning on the mainboard was unsuccessful.
- You can quickly press the reset button twice to see if a LED on the mainboard flashes; if so, it indicates that the mainboard has entered the Katapult firmware.
How to Determine Which Firmware You Need
- The SHT36 V3 can connect to the upper computer using the following methods:
-
CAN Firmware
- Advantage: After burning the
Katapult
firmware, the firmware can be updated without touching the mainboard, and it supports bus connections. - Disadvantage: There may be errors such as homing timeouts when using
KlipperScreen
together. - Tip: If you need to use CAN, ensure that the upper computer supports CAN and pair it with UTOC or a mainboard flashed with bridge firmware.
- Advantage: After burning the
-
RS232 Firmware
- Advantage: No special software is required; communication is reliable and stable.
- Disadvantage: Re-flashing the firmware requires entering manual DFU mode or double-clicking RST to enter
Katapult
to update the firmware. - Tip: It needs to be paired with G2T or UTOR to function.
Katapult Firmware Instructions
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.
- CAN connection