oneMicro is evolution of various experiments with breakout boards for Microcontrollers that we have been developing for quite some time. oneMicro is series of simple, programmable, breadboard friendly and bare-minimum breakout boards for majority of your favorite microcontrollers. oneMicro ATmega128 is breakout the popular Atmel Atmega128 chip. The board has CP2102 usb to serial convertor and comes with pre-programmed bootloader. This allows programming of the board with any external hardware.