Enable Klipper CAN Mode

Have both single switches in the “down” position to enable the board for Klipper CANBUS

120 ohm Termination Resistor

The 120 ohm resistor is enabled by switch 1 on the eight switch block

BOOT Mode

Plug a USB cable from the pi to the SB2040v3 then hold down the BOOT button, breifly press the RST button (while still holding BOOT), wait a few seconds, then release the BOOT button. The SB2040v3 should now show up to an lsusb command as Pi RP2 Boot device:

Katapult Config

Klipper Config

Sample Config

A sample config file can be found at https://mellow.klipper.cn/#/board/fly_sb2040_v3_pro/cfg

More Info

https://mellow.klipper.cn/#/board/fly_sb2040_v3_pro/README