Alex
Этот вроде должен шиться, не слышал про проблемы с ним...
sudo make flash FLASH_DEVICE=/dev/serial/by-id/usb-1a86_USB_Serial-if00-port0
Flashing out/klipper.elf.hex to /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0 via avrdude
avrdude: stk500_getsync(): can't communicate with device: resp=0x90
avrdude done. Thank you.
src/avr/Makefile:32: recipe for target 'flash' failed
make: *** [flash] Error 1