Katapult Firmware

Notes

• Katapult is the BL firmware
• SHT36_V3 supports CAN and RS232
• Only CAN firmware is provided here, with rates of 500K and 1M

Entering Flash Mode

tip

The arrow points to the BOOT button

• Enter Flash Mode:
  • Completely power off the tool board.
  • Press and hold the BOOT button (location shown below) while connecting it to the computer via a Type-C data cable.
  Loading...

Flashing Firmware

• Windows Flashing Tutorial
• Host Flashing Tutorial

• SHT36 V3 Firmware Download Address
  • Click the download link below
  • Loading...

• Prepare a data cable with data transfer capability
• Download the firmware to your computer
• Connect the BOOT jumper or hold down the button while connecting to the computer. At this point, the RPI-RP2 disk will appear
  Loading...
• Remove the BOOT jumper or release the button!!!
• Copy the firmware to be flashed into the disk. Please note that only firmware with the UF2 file extension can be used!!! (Do not modify the file extension—it will not work)
• Reference
  Loading...
• After copying the firmware, the RPI-RP2 disk will automatically disappear, indicating that the firmware flashing is complete!

1. Install the Flashing Tool

   • Enter the following command in SSH
   • This only needs to be executed for the first flash; no need to repeat later

   cd ~/klipper/lib/rp2040_flash/ && make

2. Run the command below to check if the connection is successful.

   • Enter lsusb

   • If there is no 2e8a:0003 device, try re-entering flashing mode

   • Due to system version differences, it may display other names. If 2e8a:0003 appears, it indicates entry into flashing mode.

     Loading...
   Note

   Proceed to the next step only when 2e8a:0003 is present.

3. Pull the Pre-compiled Firmware

   • These are all pre-compiled firmware files.
   • Please note that the host computer must have internet access to install.
   • The host computer needs to execute the following command to download the firmware package.

   cd && git clone https://github.com/FengHua741/FLY_Katapult.git

   • If the firmware package has already been downloaded, it is recommended to update it before proceeding with the remaining steps.

   cd ~/FLY_Katapult && git pull

4. Flash the firmware

tip

Only one firmware needs to be flashed

• Below is the command to flash the 500K CAN rate firmware

sudo ~/klipper/lib/rp2040_flash/rp2040_flash ~/FLY_Katapult/BL/SHT36/FLY_SHT36V3_katapult_CAN_500K.uf2

• Below is the command to flash the 1M CAN rate firmware

sudo ~/klipper/lib/rp2040_flash/rp2040_flash ~/FLY_Katapult/BL/SHT36/FLY_SHT36V3_katapult_CAN_1M.uf2

5. If the following prompt appears, the flashing was successful

Loading...

tip

After flashing is complete, the motherboard needs to be completely powered off once.

Confirm Firmware Startup

• If the firmware starts normally, the LED will blink

Loading...