cduino is a microcontroller programming system that is like arduino but simpler. It allows experienced programmers to get a quick start programming and talking to a microcontroller. You should be up and talking to your arduino over the serial line in a matter of minutes. This is achieved using a very easy Makefile-based driver for the command line Atmel AVR programming tools, a library of C routines, and a series of lessons that introduce a variety of AVR subsystems.