• READ FIRST
• Can't program on Linux and Mac
• Do 'make clean' before 'make'
• WINAVR is obsolete
• USB stack: LUFA or PJRC?
• Edit configuration but not change
• 1. make clean
• 2. Remove Drivers from Device Manager(Windows)
• 3. Build with different VID:PID
• 4. Just try other ports
• USB VID and PID
• Linux udev rules
• Cortex: cstddef: No such file or directory
• 'clock_prescale_set' and 'clock_div_1' not available
• BOOTLOADER_SIZE for AVR