In the assembly were resolved all conflicts between the ports used, working perfectly. I'm optimizing the code for all integrated functions can operate on the Arduino UNO. In the future I intend to use Arduino Due to the program manager. I opted for the use of more ports for the keyboard to be accurate and the LCD i2c communication. CNC 4 a 6 axis can simulate a mechanical arm! This project is presented as educational purposes and its use for other purposes is the entire responsibility of those who do.