BigTreeTech U2C v2.x

This is an instruction to set up the BTT U2C with Klipper. There are two possible variants. Use the board as a pure CANBUS adapter (candlelight FW) or a Klipper USB-to-CAN adapter.

This guide is tested with the following boards:

• BigTreeTech U2C v2.1

This guide was verified on a Pi running MainsailOS

There are multiple solutions to run the U2C with Klipper:

• CandleLight_FW (BTT fork) (recommended)
• Klipper USB-to-CAN

The straightforward variant to use the U2C is the candlelight firmware. With this, very little has to be configured, and you don't have to update it with Klipper MCU updates. With the U2C, there are few advantages through the Klipper firmware since no freely assignable pins are available on the board.

Links

• official Repository for the U2C
  • Schematic v1.1 (this is the schematic for v1.1, but it is also valid for v2.x)
  • User Manual (this is the guide for v1.x, but it is also valid for v2.x)

Pinout