sudo avrdude -p m168 -c avrispv2 -P usb -t avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.00s avrdude: Device signature = 0x1eff06 avrdude: Expected signature for ATMEGA168 is 1E 94 06 Double check chip, or use -F to override this check. Works better with the "-B" option: sudo avrdude -p m168 -c avrispv2 -P usb -t -B 32