Mainboard ID Reading and Viewing

Important Notice

This tutorial only applies to the ID reading and viewing methods for the Gemini V2 mainboard.
If you are using a CAN toolboard, please refer to the ID search tutorial in the corresponding toolboard product documentation.
If you have flashed the USB firmware, please check USB ID Acquisition.
If you have flashed the USB-to-CAN Bridge firmware, please check CANBus UUID Acquisition.
When using CANHAT, multiple UUIDs will appear, such as those for the mainboard and toolboards. It is recommended to first disconnect the CAN toolboard, search only for the Gemini V2 mainboard's own UUID, and then connect the toolboard after confirmation.

USB ID Acquisition
CANBus UUID Acquisition

Searching for USB ID

Open a browser, enter the IP address of the host computer in the address bar. For example, if my host computer IP is 192.168.101.179, directly input it and press Enter.

Open the WEB interface of the host computer, and find the following in the configuration options of the left sidebar:

For fluidd: {…}, click to enter, then you can find printer.cfg

For mainsail: Machine, click to enter, then you can find printer.cfg

Click printer.cfg to enter, then click DEVICES on the top right corner.

Click SERIAL, then refresh.

Refresh in fluidd

Refresh in mainsail

Copy the ID, click on the arrow indicated to copy.

In fluidd, confirm whether ttyACM exists, and ensure that Path by ID is present. This is the USB ID.

In mainsail, confirm whether ttyACM exists, and ensure that Path by ID is present. This is the USB ID.

Filling in the USB ID

Danger

Please note that the ID below CANNOT be used!!!!

serial: /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0

Close DEVICES and fill in the ID.

Note

In the configuration file, change:

[mcu] 
serial: /tmp/klipper_host_mcu

[mcu host] 
serial: /tmp/klipper_host_mcu

And add:

[mcu]
serial: <Replace this with the ID you just queried>

Find [MCU] in fluidd

Find [MCU] in mainsail

Fill in the ID into the configuration.

Tip

After filling in the ID, click SAVE & RESTART on the top right corner.

If Klipper prompts ADC out of range, this is normal. Connect the heated bed and thermistor to the motherboard, configure the thermistor pins for the nozzle and heated bed, then save and restart.

Danger

Note: All IDs appearing in the document are examples. The actual ID of each motherboard is different. Please fill in the ID you actually obtained.

Search CAN ID

Open the browser, enter the host computer's IP address in the address bar. For example, if my host computer's IP is 192.168.101.179, directly input it and press Enter.

Open the WEB interface of the host computer, and in the sidebar's configuration options, find:

For fluidd: {…}, click to enter, then find printer.cfg

For mainsail: Machine, click to enter, then find printer.cfg

Click printer.cfg to enter, then click DEVICES at the top right.

Click CAN, then refresh.

Fluidd refresh

Mainsail refresh

Copy the ID by clicking where the arrow points.

For fluidd, confirm if the first arrow points to Klipper. If so, click the copy button indicated by the right arrow.

For mainsail, confirm if the first arrow points to Klipper. If so, click the copy button indicated by the right arrow.

Fill in the CAN ID

Close DEVICES and fill in the ID.

Note

Please change the following in the configuration file:

[mcu] 
serial: /tmp/klipper_host_mcu

[mcu host] 
serial: /tmp/klipper_host_mcu

Add:

[mcu]
canbus_uuid: <Replace here with the ID you just queried>

Find [MCU] in fluidd

Find [MCU] in mainsail

Fill the ID into the configuration.

Tip

After filling in the ID, click SAVE & RESTART at the top right.

If Klipper prompts ADC out of range, this is normal. Connect the heated bed and thermistor to the motherboard, configure the thermistor pins for the nozzle and heated bed, then save and restart.

Danger

Note: All IDs appearing in the document are examples. The actual ID of each motherboard is different. Please fill in the ID you actually obtained.

Searching for USB ID​

Filling in the USB ID​

Search CAN ID​

Fill in the CAN ID​

Searching for USB ID

Filling in the USB ID

Search CAN ID

Fill in the CAN ID