User Manual Q&AAnswer
Feb 21, 2025 - 12:42 AM
To connect the BIGTREETECH U2C V1.0 Adapter Board to your Raspberry Pi and 3D printing motherboard, follow these steps:
1. Connect the CAN_IN interface of the U2C board to the USB port of your Raspberry Pi.
2. If your 3D printing motherboard has a USB port with CAN function (e.g., Octopus), connect it to the CAN_OUT* interface of the U2C board.
3. If you are using the U2C v1.1 board, which has additional "CAN transceiver + USB-A" ports, you can directly connect the motherboard to the U2C board using a USB data cable.
- Note: The USB GPIO of the motherboard needs to support CAN feature (e.g., "PA11/PA12" of Octopus).
Important considerations:
- Ensure that the signal protocol on the USB data cable is still the TTL level signal of the MCU and not the differential signal of CAN. This means that the anti-interference ability is not strong. Avoid using long data cables and keep away from places with strong signal interference.
- If the USB of the motherboard cannot provide 5V power supply to the U2C board in reverse (e.g., Octopus), you need to insert the Vbus jumper on the U2C board. Vbus-1 corresponds to the lower USB-A port, and Vbus-2 corresponds to the upper USB-A port. The 120R jumper corresponds to the terminal resistance of the two CAN transceivers.
For more detailed information and diagrams, please refer to the BIGTREETECH KINGPRINTER-1030000104 U2C V1.0 Adapter Board User Manual.
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