• Sparkfun Pro Micro
• CAVEAT
• Alternatives to Pro Micro
• TMK Converters
• PJRC Teensy2.0
• Arduino Leonardo
• 5V vs 3.3V
• J1 Solder bridge
• Voltage measurement in my setup
• Pinout
• VCC vs RAW
• Schematic
• Voltage regulator
• How to program
• Start bootloader
• Avrdude
• USB VID/PID
• udev Rules on Linux
• Troubles
• Northgate Omnikey 102 and RT101+ with PS/2 Converter
• Bootloader vanish shortly On Linux
• Technical resources
• Bootloader
• SparkFun Pro Micro Caterina
• Source Code
• Hex File
• Arduino Leonardo Caterina
• Source Code
• Fuse/Lock Bits setting
• A0-3(PF4-7)
• Bootloader always runs after reset
• Bootloader section is locked