This work presents a graphical environment to simulate a robot arm linked, through an usb port, to a Robix robot arm controlled by an Arduino microcontroller, which is programmed to receive data from the graphical simulation program. The movements to be done by the Robix are programmed and verified by the operator. Then, this information is sent to the microcontroller, which drives the appropriate servomotors of the robot to perform the movements required in the simulation environment.